Note: Descriptions are shown in the official language in which they were submitted.
CA 02640188 2008-07-24
DESCRIPTION
DRAWING TOY AND DRAWING TOY SET USING THE SAME
TECHNICAL FIELD
This invention relates to a drawing toy in which
images such as letters or characters and patterns or
designs having brilliance can be formed by applying
water thereto, and a drawing toy set making use of
the same.
BACKGROUND ART
Conventionally, a water image sheet is disclosed,
having a support and provided thereon a porous layer
in which a low refractive index pigment has been made
dispersedly fixed to a binder resin and which comes
different in transparency between a liquid-absorbed
condition and a liquid-non-absorbed condition (see,
e.g., Japanese Patent Publication No. S63-58711).
In this sheet, the porous layer conceals its
underlying layer when it stands dry (it is in the
liquid-non-absorbed condition), and turns transparent
when a liquid such as water is made absorbed in the
porous layer, whereby images such as letters or
characters and patterns or designs can be formed,
reflecting a color(s) the underlying layer has.
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A moisture-sensitive color-changeable textile
printing agent is also disclosed, containing finely
particulate silicic acid and an iridescent pearl
pigment; the agent being applied to a support of
various types by printing (see, e.g., Japanese Patent
Application Laid-open No. H01-260075).
This moisture-sensitive color-changing textile
printing agent takes on white in virtue of the finely
particulate silicic acid when it stands dry, and the
finely particulate silicic acid turns transparent
when it stands wet with water, where the color of the
iridescent pearl pigment is perceivable with the eyes.
However, the color produced by the iridescent
pearl pigment is not sharp when compared with colors
produced by commonly available dyes and pigments. In
addition, a difficulty may come about such that the
color of the substrate is limited to black color or
dark colors in order for the color of the iridescent
pearl pigment to be sufficiently perceivable with the
eyes.
PROBLEM(S) THE INVENTION INTENDS TO SOLVE
The present invention provides a drawing toy
having a porous layer of which water is applied to
form images such as letters or characters and
patterns or designs, and which improves in
commerciality and play performance by imparting
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brilliance to the images formed, and a drawing toy
set using the same.
DISCLOSURE OF THE INVENTION
The drawing toy of present invention comprises a
drawable member that can write or draw on, having a
light-transmitting support and provided on the
surface thereof a porous layer in which a low
refractive index pigment has been made dispersedly
fixed to a binder resin and which comes different in
transparency between a liquid-absorbed condition and
a liquid-non-absorbed condition, and a light source
which irradiates the back surface of the drawable
member with light.
Further, the present invention may preferably
require that at least one of the light-transmitting
support and the porous layer contains a coloring
agent; that a non-color-changeable layer containing a
coloring agent is provided between the light-
transmitting support and the porous layer and/or on
the back surface of the light-transmitting support;
that the coloring agent is selected from a
fluorescent pigment, a fluorescent dye, a fluorescent
brightening pigment and a fluorescent brightening
dye; that the light-transmitting support holds the
light source therein; that the drawing toy has a
container which holds the light source therein, and
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the container has, at its part where the drawable
member is disposed, a light-transmitting part which
transmits light from the light source; that the
drawing toy has a container which holds the light
source therein, and the container is provided with an
opening through which the drawable member is
irradiated on the back surface thereof with the light
from the light source, where the drawable member is
so constructed as to be detachably mountable to the
opening; that the container is provided with a light-
transmitting member at the opening, and the drawable
member is disposed on the light-transmitting member;
that the light-transmitting member stands colored;
that the drawing toy has a container which holds the
light source therein, and the container is provided
with an opening through which the drawable member is
irradiated on the back surface thereof with the light
from the light source, where the drawable member is
fastened to the container at the opening thereof;
that the drawing toy has a plurality of drawable
members; that the drawing toy has a plurality of
light sources different in colors; that the drawing
toy has a colored filter which changes the color of
the light source; that the drawing toy has a light-
transmitting pattern sheet provided between the light
source and the drawable member; that the drawing toy
has a light-transmitting sheet provided between the
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light source and the drawable member and a writing
implement with which an erasable written image is
formed on the light-transmitting sheet; that the
container holds therein an optical member which
5 reflects and/or refracts the light from the light
source; or that the light from the light source is at
least one of visible light and ultraviolet light.
Another embodiment of the present invention
comprises the above drawing toy and a water-applying
implement.
According to the present invention, images such
as letters or characters and patterns or designs
formed by applying water to the porous layer are
irradiated with light from through the back surface
thereof, and hence the color the images have and the
light act together to make the images perceivable
with the eyes as images having brilliance.
Accordingly, the present invention can provide a
drawing toy which has a high commercial value and
excellent performance in play, and a drawing toy set
using the same.
According to the present invention, water is
applied to the porous layer standing dry that has
been formed in the drawable member, to bring it into
a liquid-absorbed condition, whereupon the porous
layer becomes light-transmitting, and the drawable
member is irradiated with light on its back surface
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by means of the light source, whereby the images at
the liquid-absorbed areas are perceivable with the
eyes in the state they have brilliance. Such a
drawing toy is provided according to the present
invention.
As the light-transmitting support that
constitutes the drawable member, any support may all
be used as long as it is made of a material having
light-transmitting properties. Such a material may
include glass, plastics, cloths such as textile,
knitting, braid and non-woven fabric, porcelain, and
paper.
The plastics may be exemplified by plastic
molded products, and plastic sheets, of polyethylene,
polypropylene, polyvinyl chloride, polyethylene
terephthalate, polymethyl methacrylate, polyacrylate,
polystyrene, polycarbonate, cellulose triacetate,
cellulose diacetate, polyvinyl alcohol, polyamide and
so forth. Plastic sheets of polyethylene,
polypropylene, polyethylene terephthalate and
polyvinyl chloride may preferably be used, as being
excellent in flexibility and safety.
The support may be colorless light-transmitting,
or may instead be semi light-transmitting or may be
colored light-transmitting, as long as it has light-
transmitting properties.
The porous layer provided on the light-
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transmitting support is a layer in which a low
refractive index pigment has been made dispersedly
fixed to a binder resin and which comes different in
transparency between a dry condition and a liquid-
absorbed condition.
The low refractive index pigment may preferably
include silicic acid and salts thereof, barite powder,
barium sulfate, barium carbonate, calcium carbonate,
gypsum, clay, talc, alumina white and magnesium
carbonate. These have refractive index within the
range of from 1.4 to 1.8, and exhibit good
transparency upon absorption of water.
The salts of the silicic acid may include
aluminum silicate, aluminum potassium silicate,
aluminum sodium silicate, aluminum calcium silicate,
potassium silicate, calcium silicate, calcium sodium
silicate, sodium silicate, magnesium silicate and
magnesium potassium silicate.
The low refractive index pigment may also be
used in combination of two or more types.
There are no particular limitations on particle
diameter of the low refractive index pigment. Those
having a particle diameter of from 0.03 pm to 10.Opm
may preferably be used.
As a low refractive index pigment that may
preferably be used is a silicic acid.
The silicic acid may be silicic acid produced by
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a dry process, and silicic acid produced by a wet
process (hereinafter "wet-process silicic acid") is
especially effective. To describe this point, the
silicic acid is produced as amorphous, non-
crystalline silicic acid, and is roughly classified
by its production process into silicic acid produced
by a dry process (hereinafter "dry-process silicic
acid"), which makes use of gas-phase reaction such as
thermal decomposition of a silicon halide such as
silicon tetrachloride, and the wet-process silicic
acid, which makes use of liquid-phase reaction such
as decomposition of sodium silicate or the like by
acid. The silicic acid differs in structure between
the dry-process silicic acid and the wet-process
silicic acid. The dry-process silicic acid forms a
three-dimensional structure in which the silicic acid
has densely combined, whereas the wet-process silicic
acid has what is called a two-dimensional structure
moiety in which the silicic acid has condensed to
form a long molecular arrangement.
Thus, because of a coarser molecular structure
than that of the dry-process silicic acid, the wet-
process silicic acid, when used in the porous layer,
is superior in irregularly light reflecting
properties in a dry condition, compared with a system
using the wet-process silicic acid, and hence can
have a greater hiding power in a usual condition, as
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so presumed.
In addition, in the porous layer, the water is
made absorbed, and hence the wet-process silicic acid
may preferably be used because it has a larger number
of hydroxyl groups present as silanol groups on the
particle surfaces than the dry-process silicic acid
and is greatly hydrophilic.
In order to control the hiding power in a usual
condition of the porous layer and the transparency in
a liquid-absorbed condition of the same, it is also
possible to use other general-purpose low refractive
index pigment as above-mentioned together with the
wet-process silicic acid.
In order to satisfy both the hiding power in a
usual condition and the transparency in a liquid-
absorbed condition, the low refractive index pigment
in the porous layer may preferably be used in a
coating weight of from 1 g/m2 to 30 g/m2, and more
preferably from 5 g/m2 to 20 g/m2, which may depend on
its properties such as particle diameter, specific
surface area and oil absorption. If it is in a
coating weight of less than 1 g/m2, it is difficult
to achieve any sufficient hiding power in the usual
condition. If it is in a coating weight of more than
30 g/m2, it is difficult to achieve any sufficient
transparency in the liquid-absorbed condition.
The low refractive index pigment is dispersed in
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a vehicle containing a binder resin as a binding
agent, which is then coated on the light-transmitting
support, followed by removal of volatile components
by drying to form the porous layer.
5 The binder resin may include urethane resins,
nylon resins, vinyl acetate resins, acrylate resins,
acrylate copolymer resins, acrylic polyol resins,
vinyl chloride-vinyl acetate copolymer resins, maleic
acid resins, polyester resins, styrene resins,
10 styrene copolymer resins, polyethylene resins,
polycarbonate resins, epoxy resins, styrene-butadiene
copolymer resins, acrylonitrile-butadiene copolymer
resins, methyl methacrylate-butadiene copolymer
resins, butadiene resins, chloroprene resins,
melamine resins, and resin emulsions of all the
foregoing, as well as casein, starch, cellulose
derivatives, polyvinyl alcohol, urea resins and
phenolic resins.
The low refractive index pigment and any of
these binder resins may be mixed in such a proportion
that the binder resin is in an amount of from 0.5 to
2 parts by weight based on 1 part by weight of the
low refractive index pigment, and more preferably
from 0.8 to 1.5 parts by weight based on 1 part by
weight of the low refractive index pigment, which may
depend on the type and properties of the low
refractive index pigment. If the binder resin is in
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an amount of less than 0.5 part by weight based on 1
part by weight of the low refractive index pigment,
it is difficult to achieve any practical film
strength of the porous layer. If the binder resin is
in an amount of more than 2 parts by weight based on
1 part by weight of the low refractive index pigment,
the water may be poorly permeable into the porous
layer.
As compared with conventionally known general
coating film, the porous layer described above has a
smaller binder resin proportion to the pigment and is
hence less apt to have sufficient film strength.
Consequently, for use in applications where abrasion
resistance is required, it is preferred to use nylon
resins or urethane resins among the above binder
resins.
The urethane resins may include polyester type
urethane resins, polycarbonate type urethane resins
and polyether type urethane resins, any of which may
be used in combination of two or more types. Also
usable are urethane type emulsion resins in which any
of the above resins has been dispersed in water by
emulsification, and colloidal dispersion type
(ionomer type) urethane resins in which the resin has
been dissolved or dispersed in water by self-
emulsification without requiring any emulsifying
agent in virtue of the ionic groups of urethane
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resins (urethane ionomers) themselves having ionic
properties.
As the urethane resins, either of water-based
urethane resins and oil-based urethane resins may be
used. In the present invention, what may preferably
be used are water-based urethane resins, in
particular, the urethane type emulsion resins and the
colloidal dispersion type urethane resins.
Any of the above urethane resins may be used
alone, and may also be used in combination with other
binder resin in accordance with the type of the
light-transmitting support and the performance
required as films. When used in combination with a
binder resin other than the urethane resins, it is
preferable for any of the urethane resins to be
contained in the binder resin of the porous layer in
an amount of 30t or more as solid content weight
ratio in order to achieve practical film strength.
When a cross-linkable binder resin is used, the
film strength may be improved by adding any desired
cross-linking agent.
The binder resins illustrated above vary in
affinity for water. By using a suitable combination
of two or more of these, it is possible to regulate
the time required for water to penetrate-into the
porous layer, and degree of permeation, and the rate
of drying after permeation. It is also possible to
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control the-above regulation by suitably adding a
dispersant or a surface active agent.
The porous layer may be formed on the light-
transmitting support by printing means such as screen
printing, offset printing, gravure printing, coater
printing, pad printing, or transfer; or brush coating,
spray coating, electrostatic coating,
electrodeposition coating, cast coating, roller
coating or dip coating.
The drawable member obtained as described above
may be incorporated with a coloring agent in the
light-transmitting support or porous layer to have
colored transparency so as to achieve various color-
changes.
A non-color-changeable layer (colored light-
transmitting layer) may also be provided between the
light-transmitting support and the porous layer or on
the back surface of the light-transmitting support so
as to achieve various color-changes.
The coloring agent may include commonly
available color dyes, and besides fluorescent
pigments and fluorescent dyes, any of which may be
used.
The drawable member that constitutes the drawing
toy may be a single member, or may have a plurality
of drawable members colored with coloring agents
having different colors.
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In the present invention, the drawing toy has
the light source which irradiates the back surface of
the drawable member with light.
The light source may include incandescent lamps,
halogen lamps, luminescent lamps such as a
fluorescent lamp, a metal halide lamp, a sodium lamp
and a mercury lamp, light-emitting diodes, lasers,
and ultraviolet lamps.
The light source may be so set up as to directly
irradiate the back surface of the drawable member
with light, or may instead preferably be so set up as
to irradiate the back surface of the drawable member
with light as far as possible by indirectly
irradiating the back surface of the drawable member
with light via an optical member which reflects or
refracts the light from the light source.
The light source may be a light source kept
always turned on, or may instead be so set up that it
can be switched between being always turned on and
being turned on or off so as to be set variable, or
the light source itself may be moved or rotated so as
to be set variable.
A drawable member may be used in which a
coloring agent selected from a fluorescent pigment, a
fluorescent dye, a fluorescent brightening pigment
and a fluorescent brightening dye is blended in the
light-transmitting support or porous layer, or a
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drawable member may be used in which a non-color-
changeable layer containing a coloring agent selected
from a fluorescent pigment, a fluorescent dye, a
fluorescent brightening pigment and a fluorescent
5 brightening dye is provided between the light-
transmitting support and the porous layer or on the
back surface of the 1 light-transmitting support. In
such a case, a light source which can emit light
having ultraviolet rays, stated specifically, a
10 fluorescent lamp, a light-emitting diode which can
emit light having ultraviolet rays or an ultraviolet
lamp may be used as the light source. This enables
formation of fluorescent color images having
brilliance, and enables much more improvement in
15 commerciality.
The light source may be so set up as to be bare
to the outside, or may be so set up as to be held in
a container or the like.
In the case when it is held in a container,
there are no particular limitations on the position
where the light source is to be attached. It may be
provided at the bottom of the container, or may
instead be provided on the side of the container.
The material of the container may be selected
from plastic, glass, rubber, metal, wood, porcelain
and stone.
The container of the light source may be a
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separate part from the light-transmitting support.
Alternatively, the light-transmitting support itself,
which supports the porous layer, may be a container
of the light source
The structure of the container which is a
separate part from the light-transmitting support and
holds the light source therein, may be shown below.
The container may have a hollow structure, in
the interior of which the light source is held.
Stated specifically, the container may be so set
up that the container holds the light source therein
and the container is provided with an opening through
which the drawable member is irradiated on the back
surface thereof with the light from the light source,
where the drawable member is fastened thereto at the
opening.
The container may further be so set up that the
container holds the light source therein and the
container is provided with an opening through which
the drawable member is irradiated on the back surface
thereof with the light from the light source, where
the drawable member is set detachably mountable to
the opening.
In this case, the light-transmitting support
that constitutes the drawable member may preferably
be a platelike member of a hard resin molded product
which facilitates image forming performance.
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The container may still further be so set up
that the container is provided with a light-
transmitting member at the opening and the drawable
member is disposed on the light-transmitting member.
This is applicable also when the drawable member is a
soft member made of film, cloth or the like.
Where this light-transmitting member has colored
transparency, the drawable member may be disposed on
the light-transmitting member and the water may be
made absorbed in the porous layer. Thus, images with
brilliance which have a color different from that of
the light of the light source are made perceivable
with the eyes.
Further, a plurality of light-transmitting
members different in colors may be set detachably
mountable, where the drawable member may be disposed
on the light-transmitting members and the water may
be made absorbed in the porous layer. Thus, images
with brilliance which have colors different from the
color of the light of the light source are made
perceivable with the eyes.
As long as the container has light-transmitting
properties, it need not have the opening, where the
drawable member may be disposed on the surface of the
container and the water may be made absorbed in the
porous layer. Thus, images with brilliance are made
perceivable with the eyes.
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The container may be a container which is light-
transmitting, semitransparent, colored transparent or
light-screenable at its part to or on which the
drawable member is fastened or disposed, or may
instead be a container having light-screening areas
and light-transmitting areas mixedly.
As described previously, the drawing toy may
have a plurality of drawable members or may have a
plurality of light-transmitting members different in
colors, whereby images with brilliance which have
various colors are made perceivable with the eyes.
Images with brilliance in variety may also be made
perceivable with the eyes by changing the light
source in colors.
As a means for changing the light source in
colors, it may be so set up that a plurality of light
sources different in colors are provided, where a
single light source is selectively made to emit light
or the plurality of light sources are simultaneously
made to emit light, or it may be so set up that a
colored filter which changes the color of the light
source is provided and is set between the light
source and the drawable member.
Further, a light-transmitting pattern sheet may
be provided which is set between the light source and
the drawable member. Thus, a drawing toy is obtained
which is suited to a line drawing for coloring and a
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trace drawing.
The light-transmitting pattern sheet is a light-
transmitting sheet provided with various letters or
characters, symbols, figures, designs and/or the like.
A light-transmitting pattern sheet is preferred which
is appropriately provided with outline images. It
may also be a light-transmitting pattern sheet in
which the outline images have been colored on the
insides thereof with a light-transmitting coloring
agent.
The drawing toy may also have a light-
transmitting sheet provided between the light source
and the drawable member and a writing implement with
which an erasable written image is formed on the
light-transmitting sheet. Thus, a drawing toy is
obtained on which a line drawing for coloring and a
trace drawing can be made as desired.
AS the writing implement which provide an
erasable written image, a marking pen for a writing
board may preferably be used which holds an ink
containing at least a pigment, mediums such as an
organic solvent or water, a resin and a separating
agent.
As a power source for making the light source
emit light, electricity may be supplied from a socket,
or a power source such as a dry cell (battery) may be
used. Such a method may be employed, but the drawing
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toy may be so set up that a power source is held
inside the main body and this is preferable because
outside the main body there is no obstacle electric
cord for supplying electricity.
5 The dry cell may be either of a primary cell and
a secondary cell. The electricity may also be
obtained from a solar cell.
A switch may also optionally be provided.
As a means for applying water to the porous layer of
10 the drawable member, your hand or finger may be made
wet with water to touch the porous layer. Instead,
the water may be applied by using a writing implement
or applicator having at its end a writing brush, a
fibrous pen point or the like. Also usable are a
15 water-applying implement having a container which
holds water therein and a writing implement or
applicator which is provided with a fibrous member or
a brush through which the water in the container is
led out to apply the water to the porous layer, and a
20 water-applying implement having the form of a stamp
or a roller.
The above water-applying implement and drawing
toy may be combined to obtain a drawing toy set.
As a preferred water-applying implement, it may
be a writing implement or applicator in which a
plastic porous material having open cells or a
fibrous work is used as a pen point member, and this
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can form written images in a simple and easy way and
can improve practical performance.
In the above implement, the plastic porous
material having open cells or the fibrous work may be
any material as long as it absorbs and puts out the
water appropriately, and may include polyolefin type,
polyurethane type or other various plastic type open-
cell materials, writing-brush-shaped materials formed
by bunching fibers, fibers having been resin-treated
or heat-fused, and materials having the form of felt
or non-woven fabric. Their shapes and sizes may be
set as desired according to purposes.
Together with the writing implement or
applicator for applying the water, the drawing toy
may further have a stencil, and this enables simple
and easy formation of images.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a longitudinal section of a working
example of the drawing toy of the, present invention.
FIG. 2 is a longitudinal section of another
working example of the drawing toy of the present
invention.
FIG. 3 is a longitudinal section of still
another working example of the drawing toy of the
present invention.
FIG. 4 is a longitudinal section of a further
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working example of the drawing toy of the present
invention.
FIG. 5 is a longitudinal section of a still
further working example of the drawing toy of the
present invention.
FIG. 6 is a diagrammatic perspective view
showing how images are drawn using a drawing toy set
consisting of a drawable member according to any of
Examples 1 to 9 and a water-applying implement, of
the present invention.
BEST MODES FOR PRACTICING THE INVENTION
Working examples of the present invention are
given below. The present invention is by no means
limited to these working examples. In the following
working examples, "part(s)" refers to "part(s) by
weight".
Example 1 (see FIG. 1)
To the top surface of a hollow box-shaped light-
transmitting support 3 made of colorless transparent
acrylic resin, a white spraying ink prepared by
uniformly mixing, with stirring, 15 parts of wet-
process silicic acid (trade name: NIPSIL E-200;
available from Nippon Silica Industrial Co., Ltd.),
50 parts of urethane emulsion (trade name: HYDRAN HW-
350; available from Dainippon Ink & Chemicals, Inc.;
solid content: 30%), 40 parts of water, 0.5 part of a
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silicone type anti-foaming agent and 1 part of an
epoxy resin type cross-linking agent was applied by
spray coating, followed by drying and hardening at
70 C for 5 minutes to form a porous layer 4 to obtain
an drawable member 2.
The drawable member 2 was set holding in the
interior thereof an incandescent lamp as a light
source 5 and a dry cell as a power source to obtain a
drawing toy 1.
The light source and the power source stand
electrically connected with each other.
This drawing toy 1 is such that the porous layer
takes on white when it stands dry, and it turns
transparent when water is applied to the porous layer,
whereupon images are formed. The images formed are
irradiated with light from the light source on the
back surface, and hence are perceivable with the eyes
as images having brilliance.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
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barrel cylinder 15 were combined to obtain such a
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, whereupon written images
21 having brilliance become perceivable with the eyes.
Further, as the porous layer becomes dry, the
written images 21 become not perceivable with the
eyes. The water is again applied to the porous layer
by using the pen, whereupon the written images having
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
Example 2
To the top surface of a hollow box-shaped light-
transmitting support made of colorless transparent
acrylic resin, a white spraying ink prepared by
uniformly mixing, with stirring, 15 parts of wet-
process silicic acid (trade name: NIPSIL E-200;
available from Nippon Silica Industrial Co., Ltd.),
50 parts of urethane emulsion (trade name: HYDRAN HW-
350; available from Dainippon Ink & Chemicals, Inc.;
solid content: 30%), 40 parts of water, 0.5 part of a
silicone type anti-foaming agent and 1 part of an
epoxy resin type cross-linking agent was applied by
spray coating, followed by drying and hardening at
70 C for 5 minutes to form a porous layer to obtain a
drawable member.
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The drawable member was set holding in the
interior thereof an incandescent lamp as a light
source, a reflecting material which makes light
reflect therefrom, a lens which diffuses light, a
5 disk-like colored filter having blue, red and yellow
transparent films which makes the light source change
in colors, and a dry cell as a power source to obtain
a drawing toy.
The light source and the power source stand
10 electrically connected with each other.
This drawing toy is such that the porous layer takes
on white when it stands dry, and it turns transparent
when water is applied to the porous layer, whereupon
images are formed. The images formed are irradiated
15 with light from the light source on the back surface
efficiently and uniformly in virtue of the reflecting
material and the lens, thus the images are
perceivable with the eyes as images having brilliance.
The images change selectively in colors as the
20 colored filter is turned, thus images with brilliance
in blue, red or yellow are perceivable with the eyes.
Further, as the porous layer becomes dry, the images
become not perceivable with the eyes. The water is
again applied to the porous layer, whereupon the
25 images having brilliance become perceivable with the
eyes.
Such phase changes were repeatedly achievable.
CA 02640188 2008-07-24
26
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such a
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, whereupon written images
having brilliance in blue, red or yellow become
perceivable with the eyes.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
The water is again applied to the porous layer by
using the pen, whereupon the written images having
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
Example 3 (see FIG. 2)
To the surface of a platelike light-transmitting
support 3 (thickness: 3 mm) made of milk-white
acrylic resin, a white screen printing ink prepared
by uniformly mixing, with stirring, 15 parts of wet-
process silicic acid (trade name: NIPSIL E-200;
available from Nippon Silica Industrial Co., Ltd.),
50 parts of urethane emulsion (trade name: HYDRAN HW-
350; available from Dainippon Ink & Chemicals, Inc.;
solid content: 30%), 40 parts of water, 0.5 part of a
silicone type anti-foaming agent, 3 parts of a
CA 02640188 2008-07-24
27
thickening agent for water base ink, 1 part of
ethylene glycol and 3 parts of an isocyanate type
cross-linking agent was applied by solid printing
over the whole surface through a 100-mesh screen
printing plate, followed by drying and hardening at
70 C for 5 minutes to form a porous layer 4 to obtain
a drawable member 2.
Then, a hollow container 6 made of white
polypropylene resin and having an opening 6a was set
holding therein blue, red and yellow incandescent
lamps as a light source 5, a reflecting material
which makes light reflect therefrom, a lens which
diffuses light and a dry cell as a power source. To
the opening of this container, the drawable member
was fastened to obtain a drawing toy 1.
The light source and the power source stand
electrically connected with each other.
The drawing toy 1 set up as described above is
such that the porous layer takes on white when it
stands dry, and it turns semitransparent when water
is applied to the porous layer, whereupon images are
formed. The images formed are irradiated with light
from the light source on the back surface efficiently
in virtue of the reflecting material and the lens,
thus the images are perceivable with the eyes as
images having brilliance.
The images change selectively in colors with
CA 02640188 2008-07-24
28
selection of the light sources, thus images with
brilliance in blue, red or yellow are perceivable
with the eyes.
In addition, the light sources may be turned on
or off, or the blue, red and yellow light sources may
sequentially be turned on, thus images set variable
are perceivable with the eyes.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such an
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, whereupon written images
having brilliance in blue, red or yellow become
perceivable with the eyes.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
The water is again applied to the porous layer by
using the pen, whereupon the written images having
CA 02640188 2008-07-24
29
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
Example 4
To the surface of a platelike light-transmitting
support (thickness: 2 mm) made of blue transparent
acrylic resin, a white screen printing ink prepared
by uniformly mixing, with stirring, 15 parts of wet-
process silicic acid (trade name: NIPSIL E-200A;
available from Nippon Silica Industrial Co., Ltd.),
50 parts of urethane emulsion (trade name: HYDRAN HW-
350; available from Dainippon Ink & Chemicals, Inc.;
solid content: 30%), 40 parts of water, 0.5 part of a
silicone type anti-foaming agent, 3 parts of a
thickening agent for water base ink, 1 part of
ethylene glycol and 3 parts of an isocyanate type
cross-linking agent was applied by solid printing
over the whole surface through a 100-mesh screen
printing plate, followed by drying and hardening at
70 C for 5 minutes to form a porous layer to obtain a
drawable member A capable of changing in colors from
white to blue upon application of water.
Separately from this, to the surface of a
platelike light-transmitting support (thickness: 2
mm) made of red transparent acrylic resin, the same
white screen printing ink as the above was applied to
form a porous layer to obtain a drawable member B
capable of changing in colors from white to red upon
CA 02640188 2008-07-24
application of water.
Then, a hollow container made of white
polypropylene resin and having an opening was set
holding therein an incandescent lamp as a light
5 source 5, a reflecting material which makes light
reflect therefrom, a lens which diffuses light and a
dry cell as a power source, where the drawable member
A and the drawable member B were set detachably
mountable to the container at its opening, to obtain
10 a drawing toy.
The light source and the power source stand
electrically connected with each other.
This drawing toy is such that the porous layer
takes on white when it stands dry in the state the
15 drawable member A is mounted to the container at its
opening, and it turns semitransparent when water is
applied to the porous layer, whereupon images are
formed. The images formed are irradiated with light
from the light source on the back surface efficiently
20 in virtue of the reflecting material and the lens,
thus the images are perceivable with the eyes as blue
images having brilliance.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
25 water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
CA 02640188 2008-07-24
31
Next, in the state the drawable member B is
mounted to the container at its opening, water is
applied to its porous layer, whereupon the porous
layer turns semitransparent, thus images are formed.
The images formed are irradiated with light from the
light source on the back surface efficiently in
virtue of the reflecting material and the lens, thus
the images are perceivable with the eyes as red
images having brilliance.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such a
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, whereupon written images
having brilliance in blue or red become perceivable
with the eyes.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
CA 02640188 2008-07-24
32
The water is again applied to the porous layer by
using the pen, whereupon the written images having
brilliance become perceivable (with the eyes.
Such phase changes were repeatedly achievable.
Example 5 (see FIG. 3)
To the surface of a sheetlike light-transmitting
support 3 (thickness: 100 um; 30 cm x 40 cm in size)
made of colorless transparent polyethylene
terephthalate resin, a white screen printing ink
prepared by uniformly mixing, with stirring, 15 parts
of wet-process silicic acid (trade name: NIPSIL E-
200; available from Nippon Silica Industrial Co.,
Ltd.), 30 parts of urethane emulsion (trade name:
HYDRAN HW-930; available from Dainippon Ink &
Chemicals, Inc.; solid content: 50%), 50 parts of
water, 0.5 part of a silicone type anti-foaming agent,
3 parts of a thickening agent for water base ink, 1
part of ethylene glycol and 3 parts of a blocked
isocyanate type cross-linking agent was applied by
solid printing over the whole surface through a 100-
mesh screen printing plate, followed by drying and
hardening at 130 C for 5 minutes to form a porous
layer 4 to obtain an drawable member 2.
Then, a hollow container 6 made of white
polypropylene resin and having an opening was set
holding therein a fluorescent lamp as a light source
5, a reflecting material which makes light reflect
CA 02640188 2008-07-24
33
therefrom and a dry cell as a power source, where
three light-transmitting members were each set
detachably mountable to the container at its opening,
to obtain a drawing toy 1.
The light-transmitting members are blue, red and
yellow platelike members made of transparent
polycarbonate resin for each.
The light source and the power source stand
electrically connected with each other.
This drawing toy is such that the porous layer
takes on white when it stands dry in the state the
blue light-transmitting member is set on the
container at its opening and the drawable member is
placed on the light-transmitting member, and it turns
transparent when water is applied to the porous layer,
whereupon images are formed. The images formed are
irradiated with light from the light source on the
back surface efficiently in virtue of the reflecting
material, thus the images are perceivable with the
eyes as blue images having brilliance, conjointly
with the color the light-transmitting member has.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
This light-transmitting member may be changed
CA 02640188 2008-07-24
34
for another, thus images are perceivable with the
eyes as images having brilliance in red or yellow.
The blue and yellow light-transmitting members may be
set superposed, thus images are also perceivable with
the eyes as images having brilliance in green.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such a
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that any one color
member of the three light-transmitting members is set,
or two or more members thereof are set superposed, on
the container at its opening, in the state of which
the pen holding the water therein is used to write
down images on the porous layer, whereupon written
images having brilliance in blue, red, yellow, green,
purple or orange become perceivable with the eyes
conjointly with the colors the light-transmitting
members have.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
The water is again applied to the porous layer by
using the pen, whereupon the written images having
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
CA 02640188 2008-07-24
Example 6
To the surface of a light-transmitting support
made of pink nylon taffeta cloth having been
subjected to water-repellent treatment (fiber weight
5 of the support: 70 g/mZ; 40 cm x 50 cm in size), a
white screen printing ink prepared by uniformly
mixing, with stirring, 15 parts of wet-process fine
silica powder (trade name: NIPSIL E-220; available
from Nippon Silica Industrial Co., Ltd.), 45 parts of
10 urethane emulsion (trade name: HYDRAN AP-10;
available from Dainippon Ink & Chemicals, Inc.; solid
content: 30%), 40 parts of water, 0.5 part of a
silicone type anti-foaming agent, 3 parts of a
thickening agent for water base ink, 1 part of
15 ethylene glycol and 3 parts of a blocked isocyanate
type cross-linking agent was applied by solid
printing over the whole surface through a 100-mesh
screen printing plate, followed by drying and
hardening at 130 C for 5 minutes to form a porous
20 layer to obtain a drawable member C capable of
changing in colors from white to pink upon
application of water.
Separately from this, to the surface of a light-
transmitting support made of blue nylon taffeta cloth
25 having been subjected to water-repellent treatment
(fiber weight of the support: 70 g/m2; 40 cm x 50 cm
in size), the same white screen printing ink as the
CA 02640188 2008-07-24
36
above was applied by solid printing over the whole
surface through a 100-mesh screen printing plate,
followed by drying and hardening at 130 C for 5
minutes to form a porous layer to obtain a drawable
member D capable of changing in colors from white to
blue upon application of water.
Then, a hollow container made of white
polypropylene resin and having an opening was set
holding therein a fluorescent lamp as a light source
5, a reflecting material which makes light reflect
therefrom and a power source electric cord, where two
light-transmitting members were set detachably
mountable to the container at its opening, to obtain
a drawing toy.
The light-transmitting members are colorless and
yellow platelike members made of transparent
polycarbonate resin for each.
The light source and the power source electric
cord stand electrically connected with each other,
and are so set up that electricity can be supplied
from the outside via a socket to which the power
source electric cord is connected at its end.
This drawing toy is such that the porous layer
takes on white when it stands dry in the state the
colorless light-transmitting member is set on the
container at its opening and the drawable member C is
placed on the light-transmitting member, and it turns
CA 02640188 2008-07-24
37
transparent when water is applied to the porous layer,
whereupon images are formed. The images formed are
irradiated with light from the light source on the
back surface efficiently in virtue of the reflecting
material, thus the images are perceivable with the
eyes as pink images having brilliance.
As the porous layer becomes dry, the images
become not perceivable with the eyes. The water is
again applied to the porous layer, whereupon the
images having brilliance become perceivable with the
eyes.
Then, the drawable member D is mounted and like
operation is repeated, thus the images are
perceivable with the eyes as blue images having
brilliance.
Further, the porous layer takes on white when it
stands dry in the state the yellow light-transmitting
member is set on the container at its opening and the
drawable member C is placed on the light-transmitting
member, and it turns transparent when water is
applied to the porous layer, whereupon images are
formed. The images formed are perceivable with the
eyes as orange-colored images having brilliance which
have been formed by color mixture of the yellow the
light-transmitting member has had and the pink the
drawable member C has had.
The drawable member D is mounted and like
CA 02640188 2008-07-24
38
operation is repeated, thus images are perceivable
with the eyes as green images having brilliance which
have been formed by color mixture of the yellow the
light-transmitting member has had and the blue the
drawable member D has had.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such a
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, thus the images are
perceivable with the eyes as written images having
brilliance in blue, pink, orange or green conjointly
with the colors the light-transmitting members have.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
The water is again applied to the porous layer by
using the pen, whereupon the written images having
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
Example 7 (see FIG. 4)
To the surface of a light-transmitting support 3
made of white polyester taffeta cloth having been
subjected to water-repellent treatment (fiber weight
= CA 02640188 2008-07-24
39
of the support: 80 g/m2; 40 cm x 40 cm in size), a
pink screen printing ink prepared by uniformly mixing,
with stirring, 15 parts of a pink color pigment, 50
parts of acrylate emulsion, 3 parts of a thickening
agent for water base ink, 0.5 part of a leveling
agent, 0.3 part of an anti-foaming agent and 5 parts
of a blocked isocyanate type cross-linking agent was
applied by solid printing through a 120-mesh screen
printing plate, followed by drying and hardening at
130 C for 5 minutes to provide a non-metachromatic
layer 8.
Then, on the non-metachromatic layer 8, a white
screen printing ink prepared by uniformly mixing,
with stirring, 15 parts of wet-process fine silica
powder (trade name: NIPSIL E-220; available from
Nippon Silica Industrial Co., Ltd.), 45 parts of
urethane emulsion (trade name: HYDRAN AP-10;
available from Dainippon Ink & Chemicals, Inc.; solid
content: 30%), 40 parts of water, 0.5 part of a
silicone type anti-foaming agent, 3 parts of a
thickening agent for water base ink, 1 part of
ethylene glycol and 3 parts of a blocked isocyanate
type cross-linking agent was applied by solid
printing over the whole surface through a 100-mesh
screen printing plate, followed by drying and
hardening at 130 C for 5 minutes to form a porous
layer 4 to obtain a drawable member 2 capable of
CA 02640188 2008-07-24
changing in colors from white to pink upon
application of water.
Then, a box-shaped hollow container 6 made of
colorless transparent acrylic resin was coated on its
5 sides with a red coating material to provide a
colored layer 9. Thereafter, this container was set
holding in the interior thereof a fluorescent lamp as
a light source 5, a cylindrical colored filter 10
having colorless, blue and yellow transparent films
10 which makes the light source change in colors, a
reflecting material which makes light reflect
therefrom, a lens which diffuses light and a dry cell
as a power source to obtain a drawing toy 1 on the
top surface of which the drawable member can be
15 placed.
The light source and the power source stand
electrically connected with each other.
This drawing toy is such that the porous layer
of the drawable member placed thereon takes on white
20 when it stands dry, and it turns transparent when
water is applied to the porous layer, whereupon
images are formed. The images formed are irradiated
with light from the light source on the back surface
efficiently in virtue of the reflecting material and
25 the lens, thus the images are perceivable with the
eyes as images having brilliance.
The images change selectively in colors as the
CA 02640188 2008-07-24
41
colored filter is turned, thus images having
brilliance are perceivable with the eyes in pink, in
purple having been formed by color mixture of pink
and blue, or in orange color having been formed by
color mixture of pink and yellow.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such a
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, thus the images are
perceivable with the eyes as written images having
brilliance in pink, purple or orange.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
The water is again applied to the porous layer by
using the pen, whereupon the written images having
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
CA 02640188 2008-07-24
42
Example 8
To the surface of a sheetlike light-transmitting
support (thickness: 2 mm; 50 cm x 50 cm in size) made
of transparent soft-polyvinyl chloride resin, a white
screen printing ink prepared by uniformly mixing,
with stirring, 15 parts of wet-process silicic acid
(trade name: NIPSIL E-200; available from Nippon
Silica Industrial Co., Ltd.), 50 parts of urethane
emulsion (trade name: HYDRAN AP-20; available from
Dainippon Ink & Chemicals, Inc.; solid content: 30%),
40 parts of water, 0.5 part of a silicone type anti-
foaming agent, 3 parts of a thickening agent for
water base ink, 1 part of ethylene glycol and 1 part
of an isocyanate type cross-linking agent was applied
by solid printing over the whole surface through a
100-mesh screen printing plate, followed by drying
and hardening at 50 C for 60 minutes to form a porous
layer to obtain a drawable member.
Then, a hollow container made of black
polypropylene resin and having an opening was set
holding therein white, blue, red and yellow light-
emitting diodes as light sources, a lens which
diffuses light and a dry cell as a power source,
where four light-transmitting members were each set
detachably mountable to the container at its opening,
to obtain a drawing toy.
The light-transmitting members are colorless,
CA 02640188 2008-07-24
43
blue, red and green platelike members made of
transparent polycarbonate resin for each.
The light source and the power source stand
electrically connected with each other.
This drawing toy is such that the porous layer
of the drawable member placed thereon takes on white
when it stands dry, and it turns transparent when
water is applied to the porous layer, whereupon
images are formed. The images formed are irradiated
with light from the light source on the back surface
efficiently in virtue of the lens, thus the images
are perceivable with the eyes as images having
brilliance.
As the images, images having brilliance in
various colors are perceivable with the eyes by
selecting the light sources and selecting the light-
transmitting members.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such a
CA 02640188 2008-07-24
44
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, whereupon written images
having brilliance in various colors become
perceivable with the eyes.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
The water is again applied to the porous layer by
using the pen, whereupon the written images having
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
Example 9
To the surface of a sheetlike light-transmitting
support (thickness: 100 um; 30 cm x 40 cm in size)
made of transparent polyethylene terephthalate resin,
a fluorescent pink screen printing ink prepared by
uniformly mixing, with stirring, 15 parts of a
fluorescent pink color pigment, 50 parts of acrylate
emulsion, 3 parts of a thickening agent for water
base ink, 0.5 part of a leveling agent, 0.3 part of
an anti-foaming agent and 5 parts of a blocked
isocyanate type cross-linking agent was applied by
solid printing through a 150-mesh screen printing
plate, followed by drying and hardening at 130 C for
5 minutes to provide a non-metachromatic layer.
Then, on the non-metachromatic layer, a white
CA 02640188 2008-07-24
screen printing ink prepared by uniformly mixing,
with stirring, 15 parts of wet-process silicic acid
(trade name: NIPSIL E-200; available from Nippon
Silica Industrial Co., Ltd.), 30 parts of urethane
5 emulsion (trade name: HYDRAN HW-930; available from
Dainippon Ink & Chemicals, Inc.; solid content: 50%),
parts of water, 0.5 part of a silicone type anti-
foaming agent, 3 parts of a thickening agent for
water base ink, 1 part of ethylene glycol and 3 parts
10 of a blocked isocyanate type cross-linking agent was
applied by solid printing over the whole surface
through a 100-mesh screen printing plate, followed by
drying and hardening at 130 C for 5 minutes to form a
porous layer to obtain a drawable member.
15 Then, a hollow container made of black
polypropylene resin and having an opening was set
holding therein a fluorescent lamp and a black light
as light sources, a reflecting material which makes
light reflect therefrom and a dry cell as a power
20 source, where two light-transmitting members were
each set detachably mountable to the container at its
opening, to obtain a drawing toy.
The light-transmitting members are colorless and
blue platelike members made of transparent
25 polycarbonate resin for each.
The light source and the power source electric
cord stand electrically connected with each other.
CA 02640188 2008-07-24
46
This drawing toy is such that, the fluorescent
lamp is turned on and thereafter the drawable member
is placed setting the colorless light-transmitting
member together, where the porous layer takes on
white when it stands dry, and it turns transparent
when water is applied to the porous layer, whereupon
images are formed. The images formed are irradiated
with light from the light source on the back surface
efficiently in virtue of the reflecting material,
thus the images are perceivable with the eyes as
fluorescent pink images having brilliance.
In this state, the black light is turned on,
thus images having brilliance in pink which is more
richly fluorescent are perceivable with the eyes.
The above images, where the blue light-
transmitting member is set and like operation is
repeated', turn to fluorescent purple images having
brilliance, and images having brilliance in purple
which is more richly fluorescent are perceivable with
the eyes.
Further, as the porous layer becomes dry, the
images become not perceivable with the eyes. The
water is again applied to the porous layer, whereupon
the images having brilliance become perceivable with
the eyes.
Such phase changes were repeatedly achievable.
The drawing toy 1 and as a water-applying
CA 02640188 2008-07-24
47
implement a pen 17 having at its end a fibrous pen
point 13 and so made that water was holdable in its
barrel cylinder 15 were combined to obtain such an
drawing toy set 19 as what is shown in FIG. 6.
This drawing toy set is such that the pen
holding the water therein is used to write down
images on the porous layer, whereupon written images
having brilliance in fluorescent pink or fluorescent
purple become perceivable with the eyes.
Further, as the porous layer becomes dry, the
written images become not perceivable with the eyes.
The water is again applied to the porous layer by
using the pen, whereupon the written images having
brilliance become perceivable with the eyes.
Such phase changes were repeatedly achievable.
Example 10 (see FIG. 5)
To the surface of a sheetlike light-transmitting
support 3 (thickness: 100 m; 30 cm x 40 cm in size)
made of colorless transparent polyethylene
terephthalate resin, a white screen printing ink
prepared by uniformly mixing, with stirring, 15 parts
of wet-process silicic acid (trade name: NIPSIL E-
200; available from Nippon Silica Industrial Co.,
Ltd.), 30 parts of urethane emulsion (trade name:
HYDRAN HW-930; available from Dainippon Ink &
Chemicals, Inc.; solid content: 50%), 50 parts of
water, 0.5 part of a silicone type anti-foaming agent,
CA 02640188 2008-07-24
48
3 parts of a thickening agent for water base ink, 1
part of ethylene glycol and 3 parts of a blocked
isocyanate type cross-linking agent was applied by
solid printing over the whole surface through a 100-
mesh screen printing plate, followed by drying and
hardening at 130 C for 5 minutes to form a porous
layer 4 to obtain a drawable member 2.
Then, a hollow container 6 made of white
polypropylene resin and having an opening was set
holding therein a fluorescent lamp as a light source
5, a reflecting material 11 which makes light reflect
therefrom and a dry cell as a power source, where the
container was provided with a light-transmitting
member 7 at its opening and a frame with which the
drawable member was to be fastened onto the light-
transmitting member 7, to obtain a drawing toy 1.
This drawing toy, as a water-applying implement
a pen having at its end a fibrous pen point and so
made that water was holdable in its barrel cylinder,
and a light-transmitting pattern sheet 12 printed
with a flower pattern were combined to obtain a
drawing toy set.
The flower pattern of the light-transmitting
pattern sheet is a pattern of flowers the outlines of
which have been drawn in black and the flower
portions in the outlines of which have been colored
in pink with a light-transmitting ink.
CA 02640188 2008-07-24
49
This drawing toy set is such that the light-
transmitting pattern sheet 12 and the drawable member
2 are placed on the light-transmitting member 7 in
this order and then fastened with the frame and
thereafter the light source is turned on, thus the
pattern of flowers is perceivable with the eyes
trough the drawable member.
The pen holding the water therein is used to
write down images on the porous layer at its part
positioned on the flower pattern portion, whereupon a
pattern of clear pink flowers outlined in black
becomes perceivable with the eyes.
Further, as the porous layer becomes dry, the
pink flower pattern becomes not perceivable with the
eyes. The water is again applied to the porous layer
by using the pen, whereupon the pink flower pattern
becomes perceivable with the eyes.
Such phase changes were repeatedly achievable.
Example 11
To the surface of a sheetlike light-transmitting
support (thickness: 100 um; 30 cm x 40 cm in size)
made of colorless transparent polyethylene
terephthalate resin, a white screen printing ink
prepared by uniformly mixing, with stirring, 15 parts
of wet-process silicic acid (trade name: NIPSIL E-
200; available from Nippon Silica Industrial Co.,
Ltd.), 30 parts of urethane emulsion (trade name:
CA 02640188 2008-07-24
HYDRAN HW-930; available from Dainippon Ink &
Chemicals, Inc.; solid content: 50%), 50 parts of
water, 0.5 part of a silicone type anti-foaming agent,
3 parts of a thickening agent for water base ink, 1
5 part of ethylene glycol and 3 parts of a blocked
isocyanate type cross-linking agent was applied by
solid printing over the whole surface through a 100-
mesh screen printing plate, followed by drying and
hardening at 130 C for 5 minutes to form a porous
10 layer to obtain an drawable member.
Then, a hollow container made of white
polypropylene resin and having an opening was set
holding therein a fluorescent lamp as a light source,
a reflecting material which makes light reflect
15 therefrom and a dry cell as a power source, where the
container was provided with a light-transmitting
member at its opening and a frame with which the
drawable member was to be fastened onto the light-
transmitting member 7, to obtain a drawing toy.
20 This drawing toy, as a water-applying implement
a pen having at its end a fibrous pen point and so
made that water was holdable in its barrel cylinder,
a light-transmitting sheet and a writing implement (a
marker for a writing board) with which an erasable
25 written image is formed on the light-transmitting
sheet were combined to obtain a drawing toy set.
This drawing toy set is such that outline images
CA 02640188 2008-07-24
51
of stars are formed on the light-transmitting sheet
by using the marker for a writing board, and
thereafter the light-transmitting sheet and the
drawable member are placed on the light-transmitting
member in this order and then fastened with the frame,
where the light source is turned on, thus the outline
images of stars are perceivable with the eyes trough
the drawable member.
The pen holding the water therein is used to
write down images on the porous layer at its part
positioned inside the outlines of the outline images
of stars, whereupon a pattern of stars having
brilliance becomes perceivable with the eyes.
Next, the light-transmitting sheet is removed,
then the outline images of stars are rubbed with a
cloth, and heart-shaped outline images are formed
again by using the marker for a writing board.
Thereafter, the light-transmitting sheet and the
drawable member are placed on the light-transmitting
member in this order and then fastened with the frame,
where the light source is turned on, thus the heart-
shaped outline images are perceivable with the eyes
trough the drawable member.
The pen holding the water therein is used to
write down images on the porous layer at its part
positioned inside the outlines of the heart-shaped
outline images, whereupon a pattern of heart shapes
CA 02640188 2008-07-24
52
having brilliance becomes perceivable with the eyes.
Further, as the porous layer becomes dry, the
heart shape pattern having brilliance becomes not
perceivable with the eyes. The water is again
applied to the porous layer by using the pen,
whereupon the heart shape pattern becomes perceivable
with the eyes.
Such phase changes were repeatedly achievable.
