Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
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PRECLOSED CARDBOARD ~LIDE MOIJNT
B~GRQII~D OF THE IN~I~
The present invention relates to a slide mount for mounting film
transparencies from a photographic film web to prepare a photographic slide.
S In particular, the present invention relat~s to an improved partially closed
cardboard slide mount which has a side opening for insertion of a film
transparency.
Photographic film transparencies are generally severed from a
photographic film web and mounted in individual slide mounts to prepare
10 photographic slides. I he photographic image of the pre~ared photographic slide
is tben viewed in cooperation with a slide projector or other visualizing means.Slide mounts used in the industry are generally made from either
plastic or cardboard. Plastic slide mounts are generally fo~ned of first and
second :plastic frame portions which are connected along three edges of an outer15 border to form a pocket therebetween. The plastic slide mounts include a
centr~l aperture which is formed by Slm windows in each of the firse and
; second plastic f~me ;portions. Further, the slide mount includes a slit along a
ourth edge of the outer border. The slit provides an openirlg through which a
photographic film transparency is inserted into the pocket between the first and20 se~ond fMme por~ons. The fourth edge of the first and second frame portions
is easily spaced apart by an opening assembly, which allows an individual film
transparency to be quickly and efficiently inserted into the pocket of the slidemount. Because the plastic has shape memory, the first and second plastie
frame portions return together along the fourth edge upon leaving the opening
25 assembly to form a seal of the opening.
Cardboard slide mounts are typically significantly less expensive
than plastic slide rnounts. Cardboard ~lide mounts are generally formed by first; ~ and second frame portions which are connected by a hinge. A spacer is usually
bonded to an inner surface of the first frame portion so as to create a nest for
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the film transparency around a central rectangular aperture of the slide mount.
With the first and second frame portions open in a butterfly-like position, the
film transparency is placed in the film nest. The second frame portion is then
folded atop the first frame portion, and tbe opposing inner surfaces of the first
S and second frame portions are bonded together about all four edges of the slide
mount to secure the film transparency therein. This method of loading a film
transparency into a cardboard slide mount is typically relatively slow as
compared to the previously described method of loading a plastic slide mount.
With the film transparency seeured within the slide mount, a
photographic image of the film transparency should align with the film windows
of the first and second frame portions. Thus, it is important that the film be
correctly aligned and secured within the slide mount with the entire
photographic image visible through the aperture of the slide mount. In some
cardboard slide mounts, however, the film t ansparency is left uncomlected
within the film nest so that the photographic image can shift and become
partially obscured by the rectangular aperture.
It is also important that the film transparency be capable of
adapting to temperature variations occasioned by the intense heat of a light
source of a slide projector. In some cardboard slide mounts, the film
transparency is secured to the slide mount about all four edges of the film.
When such a slide mount is placed in the slide projector's light sour~e, extremeheat from the light source causes the film to expand and buckle, which in turn
causes the projected photographic image to become out of focus.
SUMMARY OF THE INVEi~IQN
The present invention is a preclosed eardboard slide mount which
includes a base with a first film window and a cover with a second film
window. The cover is bonded to the base with the first and second film
windows ~ligned. So bonded, a film nest is defined between the ba~e and
cover, and an insertion opening is defined along a first side of the slide mount.
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The insertion opening communicates wi~ the film nest and allows a film
transparency to inserted through t}~e insertion opening and into the film nest.
A first adhesive layer is positioned in the film nest along one of tbe film
windows so as to hold one edge of the film transparency when the film
transparency is positioned in the film nest. The preclosed cardboard slide mountof the present invention is therefore able to be quickly loaded with a film
transparency through the insertion opening in a manner similar to plastic slide
mounts. Once loaded, the first adhesive layer in ~e film nest secures only one
edge of the film transparency, which allows the film transparency to expand
without buckling in response to the heat of a slide projector's light source.
BRIEF DESCRIPrION OF THE DRAWINGS
Figure 1 is an enlarged pers~ective view of the preclosed
cardboald slide mount of the present invention.
~igure 2 is a top view of the cardboard slide mount of Pigure 1
in an unfolded condition.
Figures 2A-2C are cross-sectional views of the preclosed
cardbo~ slide mount of Figure 2 taken along lines 2A-2A, 2B~2B and 2C-2C,
respectively.
Figure 3 is a top view of a cardboard sheet from which the
cardboard slide mount of Figure 2 is prepared.
Figure 4 is a top view of the cardboard slide mount of Figure 2
with adhesives applied to the cardboard.
Figure 5 is partially assembled top view of the cardboard slide
moun~ of Figure 4.
Figure 6 is a completely assembled top ~iew of the cardboald
slide mount of Figure 5.
Figure 7 is a cross-sectional view of the cardboard slide mount
of Figure 6 taken along line 7-7.
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Figures 8A-8C are greatly enlarged perspective views of a corner
of the cardboard slide mount of Figure 6 as it enters an slide moun~ opening
assembly.
Figure 9 is an enlarged perspective view of the cardboard slide ~ -
S mount of Figure 6 positioned on a slide mount opening assembly near a positionfor insertion of a film transparency. -
Figure 9A is an enlarged perspective view of the cardboard slide
mount of Figure 9 with the slide mount opening assembly partially removed to
demonstrate insertion of a film t~ansparency.
Figure 9B is a greatly enlarged cross-sectional view of the slide ;- -
mount of Pigure 9A taken along line 9B-9B.
Figure 10 is a top view of the slide mount of Figure 9A with a
cover of the slide mount partially cut away to show the film transparency sealedwi~in the slide mount.
Figure 11 is an exploded view of a second embodiment of the
preclosed cardboard slide mount of the present invention.
Figure 12 is a partially assembled top view of the slide mount of
Figure 11 with one preferred adhesive pattern.
Figure 13 is a partially assemble~ top view of the slide mount of
Pigure 11 with an alternative adhesive pattern.
Figure 14 is a top view of another alternative embodiment of the
cardboard slide mount of Figure 11.
Figure 15 is a top unassembled view of a third embodiment of the
improved cardboard slide mount of the present invention.
DETAILED DESCRlPrION OP THE PR~FERRED E~QDIMENTS
Figure 1 is a perspective view of cardboard slide mount 10 of the
present invention. Cardboard slide mount 10 generally includes cover 12,
spacer 14 and bottom 16. Cardboard slide mount 10 also includes ou~er edge
18 and inner edge 20, which generally defines border 22. Inner edge 20 further
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defines central aperture 24, which extends fr~m cover 12 to bottom 16. Central
aperture 24, which is rect~gular in shape, provides a crisp edge for a projectedpicture when cardboard slide mount 10 is in use. In one preferred embodiment,
corners 26A, 26B and 26( of cover 12 are radius~d, while corner 26D is
chamfered.
Figure 2 is a top view of cardboard slide mount 10 of Figure I
in an unassembled condition. As shown in Figure 2, cover 12, spacer 14 and
bottom 16 are forrned from a unitary piece of cardboard material with fold line
30 dividing cover 12 and bottom 16, and fold line 32 dividing bottom 16 and
spacer 14. As can be seen, bottom 16 is generally a mirror image of cover 12.
Thus, like corners 26A-26C of cover 12, corners 34A-34C of bottom 16 are
radiused. Unlike corner 26D of cover 12, how~ver, corner 34D of bottom 16
is radiused in a similar manner as corners 34A-34C.
Spacer 14 includes outer edge 36, which defines radiused corners
38A-38D, and inner edge 40, which defimes opening 42. Opening 42 is larger
than aperture 24 such that border 44 of spacer 14 is narrower than border 22 of
cover 12 and bottom 16. Opening 42 is generally sized to accept an individual
film transparency. As can be seen, inner edge 40 of opening 42 is flared
slightly near fold line 32.
I n one preferred embodiment, cardboard slide mount 10 of Figure
2 is ~orm~d from SBS-MD bleach stock cardboard which is known in the art.
Figures 2A-2C are cross-sectional views of cardboard slide mount 10 of Figure
2. As shown in Figures 2A-2C, outer edges 18 and 36 of cardboard slide
mount 10 are ~ormed by a cutting die which cuts in a direction from outer side
5û to inner side 52 of cardboard slide mount 10. As a result of this cutting
direction, outer edges 18 as~d 36 include curved surface 54 which is directed
~owards outer side 50. Inner edges 20 and 40, however, are formed by a
cutting die whicb cuts in a direction from inner side 52 to outer side 50. As a
result of this cut, curved surface 56 of edges 20 and 40 is directed towards inner
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side 52. In a preferred embodiment, outer side 50 and inner side 52 define a
cardboard thickness of about 0.015 millimeters. The orientation of the above-
described cuts is such that the grain of the cardboard runs generally from spacer
14 to cover 12.
S Figure 3 is a top view of cardboard sheet 60, which is used to
form a plurality of cardboard slide moun~s 10. Immediately prior to cutting,
cardboard sheet 60 is processed so as to apply a first adhesive in the form of
adhesive regions 62A, 62B and 62C to inner side 52 in the vicinity of each
spacer 14, bottom 16 and cover 12, respectively, of each cardboard slide mount
10. In addition, a second adhesive in the form of adhesive regions 64A and 64B
is applied in the vicinity of each ~ottom 16 and cover 12, respectively, of eachcardb~ard slide mount 10. The first adhesive is also applied to outer side 50 ofspacer 14 in a pattern which will be descnbed later.
The first adhesive forming regions 62A-62C is preferably a heat
seal adhesive commonly known in the art. In ono prefe~ed embodiment, the
second adhesive forming regions 64A-64B is preferably a pressure-activated,
; micro-encapsulated adhes~ve, also commonly hlown in the art. O~lce adhesive
regio~ns 62A-62C and adhesive regions 64A-64B are applied, cardboard sheet 60
is further processed to create fold lines 30 and 32. Apertures 2i and opening
42 of each cardboard slide mount 10 are then cut in the direction and manner
previously described. As oriented in Figure 3, sheet 60 is further cut along
horizontal lines 66 in the direction and manner previously described, ~o separate
the plurality of cardboard slide mounts 10 into adjacent pairs. Finally, vertical
cuts are made along lines 68 in the manner ~d direction previously described
to separate adjacent pairs of cardboard slide mounts 10. Cuts along lines 66 and68 further define contours of outer edges 18 and 36 as described relative to
Figure 2. Each cardboard slide mount 10 is then assembled in a manner to be
described.
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Figure 4 is a top view of cardboard slide mount 10 in an
unassembled state to show adhesive regions 62A-62C and 64A-64B applied to
inner side 52 of cardboard slide mount 10. As shown in Figure 4, adhesive
region 62A of spacer 14 completely covers inner side 52 of border 44.
A~hesive region 62B is a mirror image pattern of border 44 of spacer 14.
Because border 44 is narrower than border 22, ad~lesive region 62B is spaced
from inner edge 20 of bottom 16. Adhesive region 62C of cover 12 generally
defines U-shaped pattern 70. Ends 72 of U-shaped pattern 70 are spaced from
outer edge 74 of cover 12 by about 0.625 inches. Inner edge 70A of U-shaped
pattern 70 is ~paced from inner edge 20 of cover 12.
Adhesive region 64A is located between inner edge 20A and
adhesive region 62B of bottom 16. Adhesive region 64B is located adjacent to
outer edge 74. Adhesive strip 64B preferably has a width of approximately 0.3
inches.
Figure 5 is a top view of cardboard slide mount 10 with inner
:~ side 52 of space} 14~folded against inner side 52 of bottom 16. As shown in
igure 5, bot~om 16 has a width Wl which is sligh1dy greater ~han width W2 of
~; ~ spacer 14. This assures that outer edge 36 of spacer 14 does not extend beyond
~: - outer edge 18 of bottom 16 in the even~ spacer 14 is slightly misfolded.
20: Opening 42 of spacer 14 frames aperture 24 of bottom 16 to create film nest 76,
with adhesive region 64A exposed between inner edge 20A of bottom 16 and
inner edge 40 of spacer 14.
Figure 5 also shows that outer side 50 of spacer 14 includes
adhesive region 62D in U-shaped pattern 78 about border 44 of spacer 14.
Ends 80 of U-shaped pattern 78 are generally aligned with the taper of opening
42. U-shaped pattern 78 of adhesive region :62D is generally a mirror image of
shaped pattcrn 70 of adhesive region 62C.
Pigure 6 is a top view of cardboard slide mount 10 with inner
side 52 of co~er 12 folded against outer side 50 of spacer 14. Once cover 12
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is folded atop spacer 14, heat sufficient to activate adhesive regions 62A-62D
is applied to cardboard slide mount 10, which bonds inner side 52 of spacer 14
to outer side 50 of bottom 16 to form base 83. In addition, inner side 52 of
cover 12 becomes partially bonded to outer side 50 of spa er 14 about U-shaped
patte~s 78 and 70. Adhesive regions 64A and 64B are not activated by the
heating of cardboard slide mount 10. As a result, eover 12 remains unbonded
to base 83 along edge 74, which pennits insertion of an individual film
transparency into film nest 76. Figure 6 also shows that corner 83A of base 83
is exposed by virtue of the chamfered cut of corner 26D of cover 12.
Figure 7 is a cross-sechonal view of cardboard slide mount 10 of
Pigure 6 taken along lines 7-7. Por illustration pu~oses, cover 12 is shown
slightly spaced from base 83. As shown in Figure 7, insertion opening 84 exists
between cover 12 and base 83. Insertion opening 84 communicates with ~ilm
nest 76, which allows an individual film transpareney to be passed through
insertion opening 84 and into film nest 7S. Thereafter, under suitable pressure
to activate the second adhesive, an edge of the individual film transpa~ency is
secured within film nest 76 along adhesive region 64A, and cover 12 is bonded
to base 83 along adhesive region 64B. Adhesive region 64A serves ~o hold the
individual film transparency in a fixed position within film nest 76. By being
secured only along adhesive region 64A, the individual film transparency is
capable of expanding and contracting when subjected to extreme temperatures
produced by a light source of a slide projector so as to avoid any walping of the
film transparency which might affect the focus of the projected picture.
Cardboard slide mount 10 has a fimished ~hickness of about 0.050 millimeters.
Figures 8A-8C are greatly enlarged perspective views of
cardboard slide mount 10 which demonstrate one preferred manner of preparing
cardboard slide mount 10 to accept an individual film transparency. Generally,
cover 12 is separated from base 83 along edge 74 so as to expose insertion
opening 84 and permit a film bansparency to be inserted into film nest 76. As
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shown in Figure 8A, cardboard slide mount 10 is placed on slide mount opening
agsembly 88. Slide mount opening assembly generally includes base 90, ledge
91 and wedge 92. Base 90 includes beveled edge 94 which, as viewed in Figure
8A, is beneath wedge 92. Beveled edge 94 of base 90 eooperates with ledge 91
S to fonn slot 93. Wedge 92 is slightly elevated above base 90, which permits
base 83 of cardboard slide mount 10 to pass beneath lower edge 96 of wedge
92. Leading edge 99 of ledge 91 extends beyond le~ding edge 100 of wedge 92
so that corner 83A of base 83 is engaged by ledge 91 before leading edge 100
of wedge 92 engages corner 26D of cover 12. Thereafter, slot 93 is designed
to accep~ edge 98 of base 83.
As shown in Figure 8B, cardbvard slide mount 10 moves in the
direction of the alTow with leading edge 99 of ledge 91 directing radiused
eorner 83A of base 83 into slot 93 before leading edge 100 of wedge 92 contacts
corner 26D of cover 12. Slot 93 thereaf~er deflects edge 98 of bottom 83
downward in the direction of be~eled edge 94 of base 90. Thus, as a result of
the chamfering of corner 26D of cover 12, edge 98 of base 83 is separated from
edge 74 of cover 12 before leading edge 100 of wedge 92 contacts eorner 26D
of cover 12. This assures that inner side 52 of cover 12 is slightly exposed
before leading edge 100 of wedge 92 engages inner side 52 of cover 12.
As shown in Figure 8C, as cardboard slide mount 10 continues
moving in the direc~ion of the arrow, inner side 52 of cover 12 is carried up
ramped surface 102 of wedge 92 so as to direct outer edge 74 of cover 12 away
from edge 98 of base 83. Ca~dboard slide mount 10 continues along slide
mount opening assembly 88 in the direction of the arrow until edge 74 of cover
12 is resting on surface 104 of wedge 92.
Figure 9 is an enlarged perspective view of cardboard slide mount
10 with slide mount opening assembly 88 partially cut away to demonstrate the
insertion of a film transparency. As shown in Figure 9, with edge 74 of cover
12 resting on surface 104, insertion op~ning 84 is thereby exposed. Space 105,
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between surface 104 and ledge 91, cornmunicates with insertion opening 84 to
allow an individual film transparency to enter insertion opening 84 and pass into
film nest 76.
Figure 9A is an enlarged perspective view of cardboard slide
5 mount 10 of Figure 9 with slide mount opening assembly 88 partially removed.
As shown in Figure 9A, with upper edge 74 of cover 12 and lower edge 98 of
base 83 separated, film transparency 106 is able to pass through insertion
opening 84 and into film nest 76. Inner edges 40A and 40B of spacer 14 serve
to guide ~llm transparency 106 into fi1m nest 76~ Film transparency 106 is fully10 inserted into film nest 76 when leading edge 108 of film transparency 106 lies
wi~hin rear space 110 of film nest 76.
Figure 9B is a sectional view of cardboard slide mount 10 of
Figure 9A taken along line 9B-9B. As shown in Figure 9B, leading edge 108
of film transparency 106 is guided into rear space 110 of film nest 76 by virtue:~ 15 of curved surfaces 56 of inner ~dges 20 of cover 12 and bottom 16. Curved
surfaces 56 assure that leading edge 108 of film transparency 106 does not bind
upon entry into rear space 110 of filrn nest 76. Once film transparency 106 is
properly seated wi~in film nest 76, pressure suf~lcient to activate adhesive
regions 64A and 64B is applied film mount 10 to secure cover 12 to base 83,
20 as described earlier with respect to Figure 7, and trailing edge 112 of film
transparency 106 to adhesive regions 64A, as shown in Figure 10.
Figure 11 is an exploded view of a second embodiment of
cardboard slide mount 120. As shown in Figure 11, cardboard slide mount 120
includes bottvm 122, cover 124 and spacer 126. Bottom 122 and cover 124 are
25 cut from a single sheet of cardboard in a direction and manner similar to that
described relative to Figure 2. Bottom 122 and cover 124 generally correspond
to bottom 16 and cover 12 of the embodiment shown in Figure 2. Spacer 126
is preferably cut from paper having a thickness of about 0.~8 millimeters.
Spacer 126 generally corresponds to spacer 14 shown in Figure 2. Fig~e
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12 is a top view of cardboard slide mount 120 with spacer 126 adhered to inner
surface 128 of bottom 122 so as to create base 129 and film nest 130. Film nest
130 is similar to film nest 76 shown in Figure 5. Spacer 126 is dimensioned so
that outer edge 132 of spacer 126 does not extend beyond outer edge 134 of
bottom 122 and cover 124 when cardboard slide mount 120 is Pully assembled.
Inner surface 135 of base 129 and inner surfiace 136 of cover 124
include U-shaped adhesive regions 138A and 138B similar to that shown in
Figure 5. Like adhesive regions 62D and 62A of the first embodiment,
adhesive regions 138A and 138B are formed from a ~eat activatecl adhesive
which is capable of partially securing cover 124 to base 129. Cardboard slide
mount 120 also includes adhesive r~gions 140A, 140B which, like adhesive
regions 64A, 64B of the first embodiment, are capable of sealing together
opposing ends of base 129 and cover 124, and of securing an edge of a film
transparency within film nest 13û. Thus, the s~ond embodiment is capable of
being assembled in a manner similar to that described with respect to Figures
8A-10, albeit at a lesser cost. This is so because the paper used to manufacturespacer 126 is less expensive than the SBS-MD bleach stock cardboard used to
form bottom 122 and cover 124. In addition, spacer 126 produces a film nest
having a depth of about 0.008 millimeters, which closely approximates the
thickness of a film transparency? which is about 0.~6 millimeters. Cardboard
slide rnount 120 therefore has a finished thickness of about 0.043 millimeters,
which is less than that of cardboard slide mount 10.
Figure 13 is a partially assembled view of an alternative
embodiment of cardboard slide mount 120 of Figure 12 showing adhesive
regions 142A-142C. Adhesive regions 142A and 142B are applied to opposing
ends of cardboard slide mount 120 so that when cover 124 is folded atop base
129, adhesive strip 144 lines up with adhesive strip 146. The adhesive forming
regions 142A-142C is preferably a c~adhesive which is slightly tacky when dry.
This allows adhesive strips 144 and 146 to bond together when cover 124 is
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folded atop base 129. In addition, adhesive region 142C, like adhesive region
64A of cardboard slide mount 10, secures one side of a film transparency within
film nest 130 when adhesive strip 144 is connected to adhesive strip 146. In a
preferred embodiment, adhesive strip 144 is spaced approximately 1/16 inch
S from edge 150 of cover 124, and adhesive strip 146 is spaced approximately
1/16 inch from edge 152 of base 129. This spacing ensures t}lat an opening
assembly, similar to opening assembly 88 shown in Figures 8A-8C~ will be able
to separate edges 150 and 152 in ~he ~vent adhesive StlipS 144 and 146 become
par~ially connected. In one preferred embodiment, adhesive strips 144 and 146
are approximately 1/8 inch wide.
Figure 14 is a top view of another alternative embodiment of
cardboard slide moun~ 120. As shown in Figure 14, edge 150 of cover 124 is
slightly recessed from edge 152 of base 129. 13y recessing edge 150, corner
154 of base 129 is able to pass into a slide mount opening assembly a greater
distance before a wedge, similar to wedge 92 of Figures 8A-8C, engages corner
156 of cover 124. By further delaying contact of wedge 92 with corner 156 of
cover 124, corner 154 of base 129 is deflected downward along beveled edge
94 of base 90 a greater distance, which decr~ase the opportunity for eardboar~
slide mount 120 to become jammed as wedge 92 engages corner 156 of cover
124. In addition, cover 124 includes second charnfered corner 158, which
permits cardboard slide mount 120 to be opened by a different d;rection of
travel through an opening assembly.
Figure 15 is a third embodimen~ of cardboard slide moun~ 170 of
the present invention. Cardboard slide mount 170 includes base 172 and cover
174. Base 172 and cover 174, like bottom 122 and cover 124 of Figure 11, are
formed from a single sheet of cardboard, with outer edge 176 and inner edge
178 formed in the same direetion and manner as cardboard slide mount 10 of
Figure 2. In this embodiment, however, inner surface 180 of base 172 and
cover 174 is embossed to create depression 182 in base 172 and depression 184
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in cover 184. Depression 184 is formed as a mirror image of depression 182.
Depressions 182 and 184 are generally patterned after opening 42 of spacer 14,
as shown in Figure 2. Thus, when cover 174 is folded atop base 172,
depressions 182 and 184 are designed to create film nest 186. By forming fi1m
S nest 186 out of depressions 182 and 184, ~e cost of manufacturing cardboard
slide mount 170 is further reduced since s~acer 126 as shown in Figure 11, and
spacer 14 as shown in Figure 2, can be eliminated. In additivn, by eliminating
spacer 126 and/or spacer 14, cardboard slide mount 170 has a ~icl~ess of about
0.032 millimeters, which is considerably thinner than cardboard slide mount 120
or cardboard slide mount 10. In the preferred emb~iment, depressions 182 and
134 are approximately 0.004 millimeters below inner surface 180 to ensure that
film nest 186 forrns a cavity suf~lcient to contain a film transparency.
Cardboard slide mount 170 can be assembl~d by using adhesives in any of the
manner heretofore described.
15 The preclosed cardboard slide mount of the present invention is
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significantly less expensive than plastic, side-opening slide mounts typically usçd
in the industry. The pr,~losed cardboard slide mount of the present invention,
however, offers the desirable benefit of allowing a film transparency to be
loaded into the slide mount through a side entrance, which is known to be a
1~ 20 quicker and more efficient manner of preparing a slide mount. The side
opening of the slide mount of the present invention is made possible by
chamfering at least one corner of the cover of the slide mount to permit an
opening assembly to quickly and effectively separate the edges of opposing sidesof the slide mount without damage to the slide mount. The inner edges of the
opposing sides of the slide mount can then be bonded together by using a
suitable adhesive. Bff~ause an edge of the film nest includes an adhesive strip,a film transparency is secured along one edge within the film nest which holds
the position of the film transparency within the slide mount, yet allows the film
to expand and con~ract in response to extreme temperatures experienced by the
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slide mount within slide projectors. In addition to the adhesives disclosed, anyother sui~able adhesives, such as a moisture activated adhesive, could perform
the bonding functions described herein.
Although the present invention has been described with reference
5 to pre~erred embodiments, workers skilled in the art will recognize that changes
may be made in form and detail without departing from the spirit and scope of ~ ~
the invention. ~:
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