JP2003255492A - Instant film pack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-priced instant film pack whose environmental load is small and which is excellent in handleability. <P>SOLUTION: The instant film pack is equipped with a plurality of instant films, an almost box-shaped case 4 in which the instant films are superposed and housed and which is provided with an exposure aperture 24 for exposing the exposure surface of the instant film and an ejection aperture 30 for ejecting the exposed instant film, and a film cover 8 housed in the case 4 in a state where it is overlapped on the superposed instant films and covering over the aperture 24 so as to shield light. The case 4 is formed in almost box shape including an upper plate 12 provided with the aperture 24, a bottom board 14 opposed to the upper plate 12 and a plurality of side plates 16 to 22 by bending a paper sheet. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instant film pack (hereinafter sometimes simply referred to as "film pack") in which a plurality of instant films are stored in a paper case.

[0002]

2. Description of the Related Art Conventionally, various kinds of instant film packs in which a plurality of mono-sheet type instant films are stored in a box-shaped case have been sold. Typically,
This case is made of plastic with light-shielding properties and is formed into a box shape. It has an exposure opening that exposes the exposed surface of the instant film, a discharge opening that discharges the exposed instant film, and an instant camera, camera back, etc. And an insertion opening for inserting a pressing member that pushes up the instant film toward the exposure opening. Further, in the case, a sheet-shaped front film cover that is stacked with the instant film to close the exposure opening from the inside of the case and a sheet-shaped rear film cover that closes the insertion opening from the inside of the case are stored.

A film pack is used for an instant camera, a camera bag, etc., and is set together with a case in a pack room provided in these devices. The above-mentioned pressing member is attached to the lid member that opens and closes the pack chamber of the device, and when the lid member is closed, the pressing member is inserted into the insertion opening of the film pack. Then, like the film, the front film cover is discharged, and the instant film can be exposed. When all the stored instant film has been used up, the empty film pack is removed from the device and discarded.

[0004] Usually, the case of the film pack is made of a molded product made of resin, and when it is discarded, it is discarded as general waste, incinerated or buried. Although resin products are currently used in large quantities in our society,
The raw material is oil, which is an underground resource. These resources are called exhaustible resources and are resources that will eventually disappear. It is also said that resin products emit carbon dioxide and the like into the air when they are incinerated after disposal, which is one of the causes of deteriorating the global environment where we live.

For this reason, in recent years, social approaches to environmental issues have been taken into consideration, and it is becoming a social mission for a person who sells a product to reduce the environmental load of the product as much as possible. . On the other hand, even if a product with a low environmental load is realized at a high cost, it is difficult to continue selling, and it is required to manufacture at a cost commensurate with economic efficiency.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the various problems in the prior art and achieve the following objects. That is, an object of the present invention is to provide an instant film pack that is low in cost, has a low environmental load, and is excellent in handleability.

[0007]

The above problems can be solved by the following means. That is, <1> a plurality of instant films, the instant films are stacked and stored, and an exposure opening for exposing the exposed surface of the instant film and a discharge opening for discharging the exposed instant film are provided. A box-shaped case; and a film cover that is stacked on the stacked instant films and housed in the case to close the exposure opening to shield light, the case being formed by bending one paper sheet to expose the An instant film pack comprising a top plate provided with an opening, a bottom plate facing the top plate, and a plurality of side plates, which are formed in a substantially box shape.

According to the invention described in <1>, the case is
It is composed of one substantially box-shaped member including an upper plate, a bottom plate facing the upper plate, and a plurality of side plates. One substantially box-shaped member is formed without performing the assembly process by bending the parts corresponding to the top plate, bottom plate, side plate, etc. in one paper sheet that is provided with exposure openings and other notches as necessary. Therefore, the number of manufacturing steps is small, and the cost can be reduced.

<2> The case described in <1>, wherein the case is formed continuously on the side plates adjacent to each other and has a bent portion positioned inside or outside the case by being bent. It is an instant film pack.

According to the invention described in <2>, the bent portion is formed together with the side plates that are adjacent to each other by bending the portions of the paper sheet that are continuously formed in the portions corresponding to the plates that are adjacent to each other. , Compose the corner of the case. For this reason, the corner portion is formed without providing a cut or the like as seen in a sack box or the like, a high light-shielding property is given to the case, and the handleability is improved. Further, by positioning the bent portion inside the case, the outer wall of the case becomes a smooth surface and gives a good appearance. On the other hand, when positioned outside, the inner wall of the case becomes a smooth surface, for example, inside the case. The instant film is properly positioned.

<3> At least one of the side plates of the case is the instant film pack according to <1> or <2>, wherein the paper sheets are partially folded and overlap each other.

According to the invention described in <3>, when at least one of the side plates of the case is formed so that part of the paper sheet is bent and overlapped with each other, the rigidity of the side plate is easily improved, and the film pack. Deformation is prevented.

<4> The bottom plate of the case has a first insertion opening into which a pressing member that pushes up the instant film toward the exposure opening is inserted, and a first insertion opening that blocks the first insertion opening to shield light. A first light-blocking piece, and the first light-blocking piece is formed of a part of the paper sheet, and is formed continuously from a part of the peripheral portion of the first insertion opening to the bottom plate of the case. <1> characterized in that they are connected by one or a plurality of first connecting portions, and the first insertion portion is opened by breaking or bending at the first connecting portion when the pressing member is inserted. ~ The instant film pack according to any one of <3>.

According to the invention described in <4>, the first light shielding piece is formed together with the first insertion opening from a part of the peripheral edge portion thereof continuously with the bottom plate of the case. The first insertion opening is provided at a position where a pressing member that pushes up the instant film toward the exposure opening is inserted. The first light-shielding piece closes the first insertion opening to shield light until the pressing member that pushes up the instant film toward the exposure opening is inserted, and when the pressing member is inserted, the first light-shielding piece becomes a bottom plate. A first connecting portion, which is a boundary where the first light-shielding piece is continuously formed, is broken or bent to open the first insertion opening,
With a simple structure without using any other member, the first light-shielding piece is used to block the light while providing the first insertion port.

<5> One of the side plates of the case is a second insertion opening into which an extruding member for pushing the instant film toward the discharge opening is inserted, and a second insertion opening that shields the second insertion opening from light. The second light shielding piece is formed of a part of the paper sheet, and is formed continuously from a part of the peripheral portion of the second insertion opening to the side plate of the case. <1> wherein the second insertion part is connected by one or a plurality of second connection parts, and the second insertion part is opened by bending or bending at the second connection part when the pushing member is inserted. > The instant film pack according to any one of <4>.

According to the invention described in <5>, the second light-shielding piece is formed continuously with the side plate of the case from a part of the peripheral portion of the second light-shielding piece. The second insertion opening is provided at a position where an extruding member that pushes out the instant film toward the discharge opening is inserted. The second shading piece is
Before the push-out member is inserted, the second insertion port is closed to block the light. On the other hand, when the push-out member is inserted, the side plate and the second light-shielding piece are boundaries that are continuously formed. The second insertion opening is opened at the connection portion of the second insertion opening, and the second insertion opening is provided with a simple configuration without using any other member, and the second light blocking piece closes the light to shield the light.

<6> The discharge opening of the case is formed with a gap between the edge of the side plate of the case and the surface of the upper plate of the case. The instant film pack according to any one of the claims.

According to the invention described in <6>, the paper sheet is bent to form a gap between the edge of the side plate of the case and the surface of the upper plate of the case, and the sheet is discharged. By forming the opening, it is not necessary to previously provide a groove-shaped hole corresponding to the discharge opening in the paper sheet, and the discharge opening can be easily provided. Further, the surface of the upper plate of the case is configured as a part of the peripheral portion of the discharge opening, and is formed while easily providing the peripheral rigidity of the discharge opening.

<7> A part of the film cover is projected from the discharge opening, and the above <1> to
The instant film pack according to any one of <6>.

According to the invention described in <7>, when a part of the film cover is projected into the discharge opening, the peripheral portion of the discharge opening is brought into contact with the film cover when the discharge opening is about to be deformed. , Its deformation is suppressed.

<8> An inner box that is housed in the case together with the instant film is provided, and the inner box includes a plurality of sides interposed between the side surfaces of the stacked instant films and the side plates of the case. <1> to <7>, wherein a piece and a pressing piece that presses the instant film toward the exposure opening are formed by bending one paper sheet.
The instant film pack according to any one of 1.

According to the invention described in <8>, the side pieces of the inner box are accommodated in the case while being interposed between the side surfaces of the stacked instant films and the side plates of the case. The number of points that directly contact the internal convex portion (obstacle) is reduced, and for example, direct contact with the internal convex portion (obstacle) is prevented, and for example, the instant film is properly positioned inside the case. . On the other hand, the pressing piece of the inner box is stored in the case while pressing the instant film toward the exposure opening, and it becomes difficult to form a gap between the instant film or the film cover and the upper plate of the case provided with the exposure opening. Good light-shielding property is given.
Further, the inner box is composed of one member including a plurality of side pieces and a pressing piece, which is a side piece or a pressing piece in one paper sheet provided with notches and the like beforehand as necessary. The parts corresponding to the above are bent and formed without performing an assembling process, the number of manufacturing processes is reduced, and the cost can be reduced.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that components having substantially the same function may be denoted by the same reference symbols throughout the drawings, and description thereof may be omitted.

The film pack 2 shown in FIGS. 1 to 3 comprises a substantially box-shaped case 4, a plurality of instant films 6 housed in the case 4, a film cover 8 and an inner box 10.

The instant film 6 is a well-known mono-sheet type self-developing film unit, in which a photosensitive sheet when a latent image is formed by exposure and a cover sheet which neutralizes the developing solution after a predetermined time are superposed. The pod portion 40 and the trap portion 42 are provided at the ends thereof. The pod portion 40 has a developer pod containing a developing solution contained therein, and the trap portion 42 has an absorbent material which absorbs an excessive amount of the developing solution after the developing process. In the instant film 6, after the exposure surface 44 is exposed, the developer pod of the pod portion 40 is crushed by the pair of unfolding rollers, and the developing solution flows out between both sheets to be unfolded with a substantially constant thickness. Development processing is performed. After development of the processing liquid and a predetermined development and fixing time, a positive image appears on the side opposite to the exposed surface 44.

The case 4 is composed of an upper plate 12, a bottom plate 14 facing the upper plate 12, and four side plates 16 to 22. The exposed surface 44 of the instant film 6 is on the upper plate 12.
Exposure opening 24 and instant film 6 for exposing
A push-out member that pushes out toward the discharge opening 30 is engaged, and a notch 25 formed continuously with the insertion opening 32 is provided. The bottom plate 14 is provided with two insertion openings 26 (first insertion openings) into which a pressing member that pushes up the instant film 6 toward the exposure opening 24 is inserted, and two light shields that block the insertion opening 26 and shield the light. It has a piece 28 (first light shielding piece). A discharge opening 30 for discharging the exposed instant film 6 is provided on the side plate 18 side. The side plate 16 is provided with one insertion opening 32 (second insertion opening) into which an extruding member for pushing the instant film 6 toward the discharge opening 30 is inserted, and the insertion opening 3
2 and one light blocking piece 34 for blocking the light.

In the case 4, the paper material 36 (paper sheet) punched into the shape shown in FIG. 4 is valley-folded at the portion indicated by the broken line (inside of the case 4) and mountain-folded at the portion indicated by the alternate long and short dash line ( It is formed into a box-like shape by bending it to the outside of the case 4) and bonding the required parts. Specifically, for example, it is bent as follows. First, the paper material 36 is placed on the upper plate 12
And the bottom plate 14 are bent so as to face each other. Next, the edge 20a and the edge 20b of the paper material 36 are bent to overlap and adhere to each other to form the side plate 20. Similarly, the edge portion 22a and the edge portion 22b of the paper material 36 are bent to overlap and adhere to each other to form the side plate 22. The edge portions 20c and 22c are respectively bent and adhered to the bottom plate 14 surface. At this time, the bent portions 38a continuously formed on the side plate 20 and the side plate 22 adjacent to the side plate 16 are bent inward and abutted on and bonded to the inner wall of the case 4. In this state, the instant film 6, the film cover 8 and the inner box are normally housed (see FIG. 2). Then, the edge 18a and the edge 18b of the paper material 36 are bent to overlap and adhere to each other to form the side plate 18, and the side plate 1
The side wall 20 and the side wall 22 adjacent to 8 are bent to bend the bent portions 38b, respectively, and abutted against the inner wall of the case 4 to bond them. At this time, the side plate 18 is bent so that a gap is provided between the side plate 18 and the surface of the upper plate 12,
This gap is used as the discharge opening 30.

The case 4 is assembled by bending the portions corresponding to the upper plate 12, the bottom plate 14, the side plates 16 to 22 and the like of one paper material 36 in which an exposure opening and other notches are provided in advance. Formed without.
Therefore, the number of manufacturing processes is reduced, and the cost can be reduced. Further, the case 4 includes the upper plate 12 adjacent to each other,
Paper material 3 in which the bottom plate 14 and the side plates 16 to 22 are continuously formed
Since 6 is formed, the light-shielding property is easily imparted and the handleability is excellent.

The corner portion of the case 4 has a bent portion 38 formed continuously with the side plates 16 to 22 adjacent to each other.
The a and 38b are bent inward and brought into contact with and adhered to the inner wall of the case 4, and the corners are formed without providing the cuts and the like found in the sack box and the like, giving the case 4 a high light-shielding property, The handling is improved.
Further, by positioning the bent portions 38a and 38b inside the case 4, the outer wall of the case becomes a smooth surface and a good appearance is provided. The bent portions 38a and 38b may be bent outward and brought into contact with the outer wall of the case 4. By positioning the bent portions 38a and 38b outside the case 4, the inner wall of the case 4 becomes a smooth surface, and the instant film 6 is appropriately positioned inside the case 4, for example.

The side plates 18 of the case 4 are overlapped with each other by bending the edge portions 18a and 18b. Similarly, the side plate 20 is formed by bending the end edge portion 20a and the end edge portion 20b, and the side plate 22 is formed by bending the end edge portion 22a and the end edge portion 22b, respectively. In this way, by stacking the paper material on the side plate to form a double structure, the rigidity of the side plate is easily improved and the deformation of the film pack is prevented. Further, for example, the external load of the instant film stored in the case can be reduced, and further, the displacement of the instant film when inserted into a pack chamber provided in a device such as an instant camera or a camera back can be prevented. The side plate is
The structure is not limited to the double stack of paper materials, and may be a stack structure of more than two stacks.

The side plate 16 of the case 4 is provided with a light shielding piece 34 (second light shielding piece) by inserting, for example, a notch in a portion of the paper material 36 corresponding to the side plate 16 so that the insertion opening 32 is formed.
Along with the (second insertion opening), a part of the peripheral portion of the case 4
It is formed continuously with the side plate 16 of. The light blocking piece 34 is a boundary where the insertion port 32 is closed and light is blocked until the pushing member is inserted, and when the pushing member is inserted, the side plate 16 and the light blocking piece 34 are continuously formed. Connection part 34a
The bending insertion opening 32 is opened at the (second connecting portion). The connecting portion 34a is formed of a hinge because it facilitates bending when the pushing member is inserted. Further, two or more connecting portions 34a may be provided. In this case, one of them may be bent and the other may be broken when the extruding member is inserted. It may be configured to be separated. The breaking connection part 34a can be easily formed, for example, by providing an uncut portion when making a cut in the paper material 36. In this way, it is possible to block the light by blocking it with the light blocking piece 34 while providing the insertion port 32 with a simple configuration without using other members.

The bottom plate 14 of the case 4 has two light-shielding pieces 2
8 (first light-shielding piece) has two insertion ports 26 (first insertion port) and one of its peripheral portions by making a cut, for example, in a part of the portion corresponding to the bottom plate 14 of the paper material 36. It is formed continuously from the part to the bottom plate 14 of the case 4. The two light-shielding pieces 28 block the insertion opening 26 to shield the light before the pressing member is inserted, and when the pushing member is inserted,
The bottom plate 14 and the light shielding piece 28 are continuously formed to bend at a connecting portion 28a (first connecting portion) which is a boundary, and is broken at two connecting portions 28b (first connecting portion) to insert the insertion ports 26, respectively. Open. The bending connecting portion 28a is formed of a hinge so that the pressing member can be bent easily when it is inserted. Also, the two connecting portions 28b that are broken
Is not limited to two and may be one or three or more. When two or more connecting portions are provided, one may be bent and the other may be broken when the extruding member is inserted, or all of them may be broken and the light shielding piece 28 may be separated from the bottom plate 14. The breakable connecting portion 28b can be easily formed, for example, by providing an uncut portion when making a cut in the paper material 36. In this way, it is possible to block the light by blocking it with the light blocking piece 28 while providing the insertion port 26 with a simple configuration without using other members.

A discharge opening 30 for discharging the exposed instant film 6 is provided on the side plate 18 side of the case 4. The discharge opening 30 is formed by bending the paper material 36 and providing a gap between the edge of the side plate 18 of the case 4 and the surface of the upper plate 12 of the case 4. A part of the peripheral edge portion of the discharge opening 30 is constituted by the surface of the upper plate 12 and further the edge portion of the side plate 18 formed by stacking two paper materials 36, and the rigidity of the peripheral edge portion of the discharge opening 30 can be easily achieved. Is improving. In this way, since the paper material 36 is bent to form the discharge opening 30, it is not necessary to previously provide a groove-shaped hole corresponding to the discharge opening 30 in the paper material 36, and the discharge opening 30 can be easily provided. it can. A flap sheet such as a light-shielding paper or a laminated paper of black polyethylene and paper may be weakly sealed in the discharge opening 30 so that a part of the flap sheet is peeled off when the instant film 6 is discharged. . This flap sheet can keep the discharge opening 30 light-tight, and can also provide rigidity in the vicinity of the discharge opening 30 of the case 4.

The film cover 8 is a member made of paper which is stacked with the stacked instant films 6 and is housed in the case 4 to close the exposure opening 24 and shield light.
The film cover 8 slightly protrudes from the entire width of the discharge opening 30. This allows the discharge opening 30 to be blocked and shielded from light, and when the discharge opening 30 is about to be deformed, the peripheral edge of the discharge opening 30 is a film. Since it is brought into contact with the cover, its deformation is suppressed. The amount of protrusion of the film cover 8 from the discharge opening 30 is preferably 0.2 to 1.0 mm, and more preferably 0.4 to 0.8 mm.

The film cover 8 is, as shown in FIG.
It is composed of a paper base material 8a and an auxiliary paper 8b provided on the instant film 6 side of the surface of the base material 8a. The auxiliary paper 8b is made of a soft material having the substantially same shape as the base material 8a and adhered at the central portion thereof, and its peripheral portion is displaced near the peripheral portion of the base material 8a. The auxiliary paper 8b in the film cover 8 plays a role of filling the gap between the instant film 6 and the film cover 8 (base material 8a), and improves the light shielding property. Further, even when the auxiliary paper 8b is provided on the exposure opening 24 side of the base material 8a, similarly, the gap between the upper plate 12 of the case 4 and the film cover 8 (base material 8a) is filled, and the light shielding property is improved. The auxiliary paper 8b may be composed of one member or two or more members as long as it can be displaced near the peripheral edge of the base material 8a. Further, the shape and the arrangement position thereof may be arbitrary.

At the end of the film cover 8, the discharge opening 3
0 is blocked from the inside of the case 4 to block light, for example, a thickness of 30 μ
A light-shielding sheet 46a made of black polyethylene is attached. In addition, a light-shielding sheet 46b is attached to the other end to block the insertion opening 32 into which the extruding member that pushes the instant film 6 toward the discharge opening 30 from the inside of the case 4 and shields light. In the present embodiment, the light-shielding sheet 46b is the base material 8 of the film cover 8.
The light-shielding sheet 46a is provided on the auxiliary paper 8b of the film cover 8. Note that, in FIG. 5, the hatched portions indicate the bonding portion between the base material 8a and the auxiliary paper 8b, the bonding portion between the base material 8a and the light shielding sheet 46a, and the bonding portion between the auxiliary paper 8b and the light shielding sheet 46b.

The inner box 10 includes the side surfaces of the stacked instant films 6 and the side plate 16 of the case 4,
Three side pieces 48 to 52 to be interposed between 20, 22
And a pressing piece 54 for pressing the instant film 6 toward the exposure opening 24, and a bottom piece 56.

In the inner box 10, the portion of the paper material 58 (paper sheet) punched out in the shape shown in FIG. 6 is shown by the broken line in the valley fold (inside the case 4) and the portion shown by the alternate long and short dash line is in the mountain fold. It is formed by bending (to the outside of the case 4). Specifically, for example, it is performed as follows,
First, the side pieces 48 to 52 are bent so as to rise from the three sides of the bottom piece 56 to form. Then, the bottom piece 56 is bent from one side to further form peaks and valleys, and the ends are brought into contact with the bottom piece 56 side to form the pressing piece 54. In this way, the inner box 10 has the side pieces 48 to 5 in one paper sheet provided with notches and the like beforehand if necessary.
It is formed without bending and assembling a portion corresponding to 2 or the pressing piece 54. Therefore, the number of manufacturing processes is reduced, and the cost can be reduced.

The side piece 48 of the inner box 10 is provided with a notch 48b for inserting the pushing member. The notch 48b is formed by making a notch in a part of the side piece 48, for example.

Side pieces 48 to 52 of the inner box 10
Is provided with bent pieces 48a to 52a that are substantially parallel to the upper plate 12 of the case 4 inside from the edges thereof. The bent pieces 48a to 52b are arranged in contact with the film cover 8. Therefore, the bent pieces 48a to 52b
Prevents the film cover 8 from sinking and exposes the exposure opening 24.
In addition to blocking the light from the case, the case 4 is prevented from being deformed.

The pressing piece 54 of the inner box is provided so as to press the central portion of the instant film 6, and the pressing piece 54 presses the instant film 6 toward the exposure opening 24 and inserts an extruding member. When this is done, the bottom piece 56 is notched so that both ends push up the ends of the instant film 6, and two bent pieces 56a are formed. The bent piece 56a is provided so as to be bent from the bottom piece 56 near the center thereof when the pressing member is inserted. When the pressing member is inserted from the insertion port 28, the bending piece 56a is bent, and the pressing member is pressed through the bending piece 56a.
4, both ends of the instant film are pushed up. Therefore, even if the instant film 6 is discharged and the amount of the instant film 6 in the case 4 becomes small, the instant film 6 can be properly used.
Can be pressed toward the exposure opening 24.

As described above, the inner box 10 includes the instant film 6 in which the side pieces 48 to 52 are stacked.
Since it is housed in the case 4 while being interposed between the side surface of the case 4 and the side plates 16, 20, 22 of the case 4, there is a point where the side surface of the instant film 6 directly abuts a convex portion (obstacle) inside the case 4. For example, the convex film (for example, the bent portion 38a) inside the case 4 is prevented from coming into direct contact, and the instant film 6 is appropriately positioned inside the case 4. On the other hand, since the pressing piece 54 presses the instant film 6 toward the exposure opening and is housed in the case 4, the instant film 6 or the film cover 8 and the upper plate 1 of the case 4 provided with the exposure opening 24.
It becomes difficult to form a gap between the first and second parts, and good light-shielding property can be provided. In addition, the inner box 10 is stored in the case 4 by bringing the side pieces 48 to 52 into contact with the stacked instant films 6 and storing them in the case 4, without storing the plurality of instant films 6 in the case 4. Can be made.

The case 4, film cover 8 and inner box 10 of the film pack 2 are made of paper material. Therefore, since the film pack 2 is made of a paper-based material made of wood as a basic raw material, it is recyclable and has a low environmental load. Specifically, the paper material may be composed of one sheet of paper or may be composed of two or more sheets of paper stuck together. Further, the surface may be covered with a coating layer having moisture resistance, heat sealing property and light shielding property. Specifically, in the case 4 and the film cover 8 to which the outer wall is exposed, for example, white paper or colored paper and black paper mixed with carbon black or the like to enhance the light-shielding property are bonded together, and the surface thereof is And a polyethylene (PE) layer that covers the surface and imparts moisture resistance and heat sealability. The PE layer may be blackened by mixing a light-shielding substance and imparted with a light-shielding property. Further, oriented polypropylene (OPP) may be used instead of PE. The inner box 10 housed inside the case 4 may be light-shielding on both sides, for example, black paper, or both sides covered with a light-shielding coat layer.

The film pack 2 described above
Are usually shipped in a state of being wrapped by a wrapping band.
Then, the user releases the film pack 2 from this wrapping band.
Is opened and loaded into a pack loading chamber 60 provided in an instant camera, a camera bag or the like for use. As shown in FIG. 7, the film pack 2 is placed in the pack loading chamber 60.
Is loaded, the front surface of the case 4 of the film pack 2 in which the exposure opening 24 is formed contacts the receiving surface 62 and is positioned.

On the receiving surface 62 of the pack loading chamber 60, an aperture opening 66 that defines an exposure range for the instant film 6 is formed in a portion facing the exposure opening 24. In addition, a claw claw 64 that constitutes a known claw mechanism as an extruding member enters the insertion opening 32 (second insertion opening) of the case 4, and when the film cover 8 and the instant film 6 are discharged, the film cover 8 and the instant Hook the bottom edge of the film 6 to raise it, and
Scrape from.

A pack loading lid 68 for opening and closing the pack loading chamber 60 is swingable via a hinge portion 78. On the inner surface of the pack loading lid 68, a pressing member 72 that enters the insertion opening 28 of the film pack 2 and presses the instant film 6 is provided. The pressing member 72 enters the inside of the film pack 2 from the insertion opening 28 and comes into direct contact with the pressing piece 54 (folding piece 56 a), and the spring 76 for urging the pressing projection 74.
And a holding frame 78 that holds the pressing protrusion 74 and the spring 76.

A developing roller 80 is provided above the pack loading chamber 60. After the exposure, the instant film 6 scraped out of the case 4 by the claw 64 is conveyed toward the film take-out port of the instant camera while the developer pod is crushed by the developing roller 80. The developing solution that has flowed out of the developing solution pod is developed between the photosensitive sheet and the image receiving sheet, and a predetermined developing and fixing process is performed.

Next, the operation of setting the film pack of the above embodiment in the instant camera will be described. The film pack 2 opens the pack loading lid 68,
The film pack 2 is set in the pack loading chamber 60 in a direction in which the exposure opening 24 faces the receiving surface 62. After that, when the pack loading lid 68 is closed, the pressing protrusion 74 is inserted into the insertion opening 2
The film 8 enters the inside of the film pack 2 and presses the instant film 6 from two places via the pressing piece 54 (folding piece 56a) of the inner box 10. Pressing piece 54
Pushes up the central portion of the instant film 6 at its central portion and pushes up the end portions of the instant film 6 at both ends bent by the pressing protrusions 74.

When the pack loading lid 68 is closed, the film cover 8 is discharged. The claw 64 enters from the insertion opening 32, engages with one end of the film cover 8, and scrapes it out toward the discharge opening 30. By removing the film cover 8, the exposure opening 2
The exposure surface 44 of the instant film 6 faces 4 and the exposure preparation is completed. The instant film 6 is pressed from the back side thereof toward the exposure opening 24 by the pressing piece 54 of the inner box 10, so that the exposure range of the frontmost instant film 6 facing the aperture opening 66 is defined.

When the instant film 6 in the front row is exposed, the discharging process is performed similarly to the discharging operation of the film cover 8. The claw claw 64 engages with the lower end of the exposed instant film 6, and the discharge opening 3
Eject this from 0. Then, when the pod unit 40 is caught between the developing rollers 80, the developing solution pod is crushed and the developing solution is unfolded, and the claw 64 is retracted.

Subsequently, the developing solution is developed, and at the same time, the instant film 6 is conveyed to the outside of the camera. Then, when the exposed film is completely discharged from the discharge opening 30, the pressing member 72 causes the instant film 6 in the next row to face the exposure opening 24, and the next shooting preparation is completed. On the other hand, the exposed film conveyed to the outside of the camera has a positive image transferred after a predetermined developing and fixing time, and is used as a desired print photograph.

In this way, shooting is carried out sequentially,
After all the instant film 6 is used up,
The pack loading lid 68 is opened, and the empty case 4 is taken out. The taken-out case 4 can be discarded as a combustible material, or can be recycled for recovery of used paper.

In the instant film pack of the present invention, most of the members are made of paper materials. However, it is not possible to use waste paper or spoiled paper as the material for industrial waste. In terms of reduction and improvement of recyclability, it is effective as a means of reducing environmental load, and also effective in terms of manufacturing cost reduction.

Needless to say, the instant film pack of the present invention according to the above embodiment is not to be construed as a limitation, and can be realized within the range satisfying the requirements of the present invention.

[0055]

As described above, according to the present invention, it is possible to provide an instant film pack which is low in cost, has a low environmental load, and is excellent in handleability.

[Brief description of drawings]

FIG. 1 is an external perspective view of an instant film of the present invention according to an embodiment.

FIG. 2 is an exploded perspective view showing the structure of the instant film of the present invention according to the embodiment.

FIG. 3 is a cross-sectional view of essential parts of an instant film of the present invention according to an embodiment.

FIG. 4 is a development view of a case in the instant film of the present invention according to the embodiment.

FIG. 5 is an external perspective view of a film cover in the instant film of the present invention according to the embodiment.

FIG. 6 is a development view of an inner box in the instant film of the present invention according to the embodiment.

FIG. 7 is a cross-sectional view of the essential parts of the pack loading chamber of the instant camera that loads the instant film of the present invention according to the embodiment.

[Explanation of symbols]

2 film pack 4 cases 6 Instant film 8 film cover 10 inner box 12 Upper plate 14 Bottom plate 16-22 side plate 24 exposure aperture 30 discharge opening

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03C 3/00 590 G03C 3/00 590Z G03B 17/52 G03B 17/52 F (72) Inventor Toshiyuki Nishiyama Kanagawa 290-1, Shimizu-Nitta, Odawara-shi, Japan F-Term in Ray Pack Co., Ltd. (reference) 2H104 BB02 CE01 CE06

Claims (2)

[Claims] 1. A plurality of instant films, a stack of the instant films which are stored together, an exposure opening for exposing an exposed surface of the instant film, and a discharge opening for discharging the exposed instant film. A box-shaped case, and a film cover that is housed in the case so as to be stacked on the stacked instant films and that blocks the exposure opening to shield light, and the case is formed by bending one paper sheet and exposing the sheet. An instant film pack comprising a top plate provided with an opening, a bottom plate facing the top plate, and a plurality of side plates formed into a substantially box shape. 2. An inner box housed in the case together with the instant film, wherein the inner box is provided with a plurality of side pieces interposed between a side surface of the stacked instant films and a side plate of the case. The instant film pack according to claim 1, wherein the pressing piece that presses the instant film toward the exposure opening is formed by bending one paper sheet.