JPH05127249A - Film unit provided with lens - Google Patents

Abstract

PURPOSE:To recycle a film unit provided with a lens by constituting a photographic film cartridge so that a take-up case and a cartridge may be bonded with each other, and also, forming a slit groove between a film feeding frame and a take-up cartridge. CONSTITUTION:The film unit is constituted of a film unit main body 1 provided with the lens and incorporating a photographic lens, a film winding mechanism and a shutter mechanism, a rear cover 2 which is installed on the back side of the film unit main body 1 provided with the lens in an attachable and detachable state and the photographic film cartridge 6 which is integrally formed with the back cover 2. And the photographic film cartridge 6 is constituted by bonding a take-up case 11 which is obtained by uniting the film feeding frame 13 provided with an exposure aperture and a film take-up cartridge 14 for taking up the film in a body and the photographic film cartridge 10 where the photographic film is stored in a rolled state, and also, the slit groove is formed between the film feeding frame 13 and the take-up cartridge 14. Thus, the unit main body 1 can be recycled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit, and more particularly to a recyclable lens-fitted film unit.

[0002]

2. Description of the Related Art A film unit with a lens that has a built-in photo film and a simple shooting function so that you can easily take pictures even when you are not carrying a camera (for example, trade name " This is a photo shoot H
i ") is marketed by the applicant. This lens-fitted film unit needs to be provided at a price that is not so different from the purchase of a normal color film, and thus has a simple structure as a whole.

The lens-fitted film unit comprises a unit main body and an outer case for making the external appearance of the unit main body beautiful. The unit main body is composed of a main body part having a photographing mechanism such as a shutter, a photographing lens, and a film winding mechanism, a front cover mounted on the front side of the main body part, and a rear cover mounted on the rear side of the main body part. Has been done.
The main body portion is a film supply chamber, a film winding chamber,
An exposure opening provided between these chambers is provided.

In the film supply chamber, an unexposed film is stored in a rolled state, and a user who purchases this film is a patrone in which the exposed film is provided in the film winding chamber for each photographing. When the film is wound up on the spool inside the main body and the entire exposure is completed, the film unit is submitted to a development store for requesting development. At the lab,
The cartridge containing the exposed film is taken out, processed such as development and printing using the existing development processing system, and the print photograph and the negative film are returned to the user. Further, the film unit is not returned, and conventionally, the used film unit has been destroyed and disposed of as industrial waste.

By the way, recently, reduction of industrial waste has been proposed for environmental protection, and recycling for recovering and reusing the film unit has been studied.
For example, Japanese Patent Laid-Open No. 63-271434 discloses that a cartridge containing a photographed film is folded and separated from the main body, the main body is disassembled, and the parts are reused.

[0006]

However, in the above recycling method, the parts are simply reused,
There is a problem that efficient recycling cannot be performed.

An object of the present invention is to solve the above problems, and an object thereof is to provide a lens-fitted photo film unit which can be reused without being disassembled as much as possible to improve the recycling ratio.

[0008]

In order to achieve the above object, the present invention provides a lens-equipped film unit main body having a taking lens, a film winding mechanism, and a shutter mechanism built-in, and a rear side of the lens-equipped film unit main body. It is composed of a rear cover which is detachably attached and a photographic film cartridge which is integrally provided on the rear cover. The photographic film cartridge is integrated with a film transfer frame having an exposure opening and a film winding patrone for winding the film. The winding case and the photographic film cartridge in which the photographic film is stored in a roll shape are joined together, and a split groove is formed between the film transfer frame and the winding cartridge.

According to another aspect of the invention, instead of integrally providing the photographic film cartridge on the rear cover, a recess for loading the photographic film cartridge is formed on the back side of the lens-fitted film unit main body, and the photographic film cartridge is formed in the recess. After the mounting, the concave portion is covered with a light shielding member.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The lens-fitted film unit of the present invention comprises a unit body 1 and a rear cover 2, as shown in FIG. Locking claws 3 are formed on both sides of the rear cover 2. In addition, the unit body 1 has a locking claw 3
The locking hole 4 is formed at a position where the key enters. And
Since the locking claw 3 is locked in the locking hole 4, the rear cover 2
Is detachably attached to the unit body 1. The unit main body 1 has a built-in photographing mechanism including a known photographing lens, a shutter mechanism, and a film winding mechanism. Further, as shown in FIG. 2, the rear cover 2 has a rear cover body 5
The photographic film cartridge 6 is fixed to the above.

As shown in FIG. 3, a recess 7 into which the photographic film cartridge 6 of the rear cover 5 is inserted is formed in the rear portion of the unit main body 1. A spool rotating fork 8 is provided in the recess 7 so as to project one film of film for each photographing. Therefore, when the photographic film cartridge 6 is inserted into the recess 7, the fork 8 becomes an obstacle to the cartridge insertion. Therefore, the fork 8 is, as shown in FIGS. 4 (A) and 4 (B),
The winding knob 9 is provided so as to be axially shiftable via a spline shaft portion 8a. When the photo film cartridge 6 is inserted or removed, the spline shaft portion 8
The fork 8 is retracted from the inside of the recess 7 by hooking and lifting the upper end engaging portion 8b of a from the hole 1a with a locking tool or the like. After the insertion of the cartridge 6, the spline shaft portion 8a is pushed down to cause the fork 8 to project into the recess 7 and engage with the engagement end portion 61a of the spool 61. Further, when the cartridge 6 is taken out from the recess 7,
Lift the spline shaft portion 8a upward.

As shown in FIG. 5, the photographic film cartridge 6 is constructed by joining a photographic film cartridge 10 and a winding case 11. The winding case 11 is
It is composed of a film transfer frame 13 and a film winding cartridge 14. Film transfer frame 1
3, an exposure opening 15 is formed, and when the rear cover 2 is loaded in the recess 7 of the unit main body 1, the exposure opening 15 is set in the aperture 7a (see FIG. 3). As is well known, the surface on which the aperture 7a is formed is curved in order to correct the distortion aberration of the photographing lens, and the film transfer frame 1 is correspondingly curved.
3 is also formed to be curved. Further, a split groove 16 for separating the film transfer frame 13 and the winding cartridge 14 is formed between the film transfer frame 13 and the winding cartridge 14. Split groove 1
6 has a V-shaped cross section, and a film transfer frame 1
3 are formed in the vertical direction on the front surface side and the back surface side.

As shown in FIG. 5, the edge of the film outlet 20 of the photographic film cartridge 10 is projected, and a joining projection 21 is formed. In addition, at the periphery of the film inlet 22 of the film transfer frame 13, the joining protrusion 21
A joint hole 23 is formed so as to fit in. Further, the film inlet 22 is provided with a reinforcing piece 24 on the back side thereof. When the photographic film cartridge 10 is joined to the winding case 11, the reinforcing piece 24 adheres to the back side of the photographic film cartridge 10 to ensure the joining. Although the photographic film cartridge 10 and the winding case 11 are joined to each other by ultrasonic welding in this embodiment, other adhering means such as an adhesive may be used.

As shown in FIGS. 6 and 7, the photographic film cartridge 10 is of a film-cue type. The photo film cartridge 10 includes a cartridge main body 30, a spool 31 rotatably attached to the main body 30, and a negative film 32 wound around the spool 31. As shown in FIG. 7, the tip portion 32b of the negative film 32 is obliquely cut,
The feeding resistance when the film is cued is reduced. Further, well-known perforations 32c are formed on both side edges of the negative film 32.

The cartridge main body 30 is constructed by joining two case members 30a and 30b made of a light-shielding resin. Further, the end portion 31a of the spool 31 is exposed at the bearing portion 33 (see FIG. 7) that is a hole formed by joining the case members 30a and 30b. Then, this is engaged with a fork (not shown) of the film indexing device, and this is also rotated by the rotation of the fork. The end of the cartridge main body 30 opposite to the end where the bearing 33 is formed is closed.

As shown in FIG. 7, the spool 31 is provided with flanges 35 near both ends thereof.
The negative film 32 is wound between the five. A film fixing recess 36 is formed on the peripheral surface of the spool 31, as shown in FIG. This film fixing recess 3
6 is formed obliquely with respect to the peripheral surface of the spool 31, and the film rear end portion 32a is inserted into this. Also,
A pressing piece 37 is extended above the fixing recess 36 and presses the film rear end portion 32a toward the spool center side to fix the film rear end portion 32a to the spool 31. Further, a locking hole 38 is formed at the rear end portion 32a of the film, and the locking hole 38 is locked by a locking claw 39 formed so as to project to the front side of the recess 36. Therefore, film 3
When winding 2 onto the spool 31, the film rear end 3
2a is fixed in the recess 36 and wound in the direction of the arrow in FIG. At the time of this winding, the locking holes 38 of the film 32 are locked by the locking claws 39, so that the film 32 is rotated by the spool 3.
It does not deviate from 1. Further, when this photo film cartridge is set in the film unit 1 and all the photographing is finished and the film 32 is completely pulled out from the photo film cartridge 10, the film rear end portion 32a is indicated by a chain double-dashed line in FIG. Therefore, the engagement between the engagement claw 39 and the engagement hole 38 is released, and the film rear end portion 32a is easily disengaged from the spool 31.

As shown in FIG. 7, arcuate ribs 45 and 46 are provided on the inner peripheral surface of the cartridge main body 30 to prevent the negative film 32 from being loosened. Further, as shown in FIG. 6, in the passage 47 toward the film outlet 20, a tip separation claw 48 made of a thin elastic plate is attached. The tip separation claw 48 separates the film tip portion 32b of the roll-shaped negative film 32 wound around the spool 31 from the roll body and guides it to the film outlet 20. Further, a light-shielding telemeter 49 for preventing light from entering is adhered to the inner wall of the passage 47 near the film outlet 20.

As shown in FIG. 5, the winding case 11 is also constructed by joining two case members 11a and 11b, like the photographic film cartridge 10. However, since the winding case 11 is integrated with the film transfer frame 13 unlike the photographic film cartridge 10, the case members 11a and 11b have a shape in which the film transfer frame 13 is connected to the film winding cartridge 14. Is becoming The transfer frame 13 is formed with a window 51 into which the film transfer sprocket 50 (see FIG. 3) of the unit body 1 is inserted. In addition,
Instead of providing the window 51, the exposure opening 15 may be enlarged so that the perforation 32c of the negative film 32 is exposed from the opening 15.

As shown in FIG. 9, the film winding cartridge 14 is basically constructed in the same structure as the photographic film cartridge 10. Specifically, the winding loosening prevention rib 45 and the tip separation claw 48 are provided, and the end 61a engaging with the fork is exposed (see FIG. 5).
It has the same structure as the photographic film cartridge 10.
Also, the difference between the two is that the winding cartridge 14
Is that the spool 61 is formed with a locking claw 64, and the spool 61 is attached with a film guide 62 for guiding the film tip portion 32b.

That is, as shown in FIG. 9, the film 32 is attached to the spool 61 of the film winding cartridge 14.
The locking claw 64 is formed so as to slightly project from the peripheral surface of the spool 61 at a position where the perforation 32c faces when the tape is wound. Also, the film guide 62
Is composed of a thin plate material having elasticity. The guide 62 guides the film front end portion 32b to the peripheral surface of the spool 61 and locks the perforation 32c.
Lock to 4. As a result, the spool 31 of the photographic film cartridge 10 is rotated in the feeding direction,
By rotating the spool 61 of the film winding cartridge 14 in the winding direction, the film leading end 32b passes through the film transfer frame 13 and the winding cartridge 1
3, the film guide 62 guides it to the spool 61, and the spool 61 is rotated in the winding direction so that the film tip 32b is wound around the spool 61.

Next, the manufacturing process of the lens-fitted film unit of this embodiment will be described. First, the manufacturing process of the photographic film cartridge will be described. As shown in FIG. 5, a photographic film cartridge 10 and a winding case 1
1 and 1 are manufactured separately. Photo Film Patrone 10
The film is manufactured by winding the film 32 around the spool 31 in a dark room and inserting the film 32 between the case bodies 10a and 10b so that the case bodies 10a and 10b are joined together. Further, the winding case 11 is also manufactured by joining the case bodies 11a and 11b with the spool 61 sandwiched between the case bodies 11a and 11b. After that, these photo film Patrone 1
The photographic film cartridge 6 as shown in FIG. 2 is formed by aligning the joining projection 21 and the joining hole 23 of the 0 and the winding case 11 and joining them.

After the two members 10 and 11 are joined together, the spool 31 of the photographic film cartridge 10 is rotated in the feeding direction as shown in FIG. 6, and the spool 61 on the take-up case 11 side is rotated as shown in FIG. Rotate in the winding direction. As a result, the film tip portion 32b is indexed from the photographic film cartridge 10, passes through the film transfer frame 13, and then reaches the inside of the winding cartridge 14. Further, the film leading end portion 32b reaching the inside of the winding cartridge 14 has a spool 61 through a film guide 62.
Since the spool 61 is being rotated in the winding direction, the locking claw 64 is locked to the perforation 32c, and the film front end 32b is wound on the spool 61. When the load of the winding torque increases due to the winding of the film front end portion 32b, the torque sensor or the like detects the end of the winding of the film front end portion 32b on the fork side.
It will be fixed at 1. Since the film tip portion 32b wound around the spool 61 is pressed to the spool 61 side by the film guide 62, the film tip portion 3
2b does not come off the spool 61.

In this state, as shown in FIG. 2, the photographic film cartridge 6 is inserted into the rear cover body 5, and only the photographic film cartridge 10 and the film transfer frame 13 are adhered to the rear cover body 5 with an adhesive or the like. Then, the rear cover 2 is configured. After this, as shown in FIG. 1 and FIG.
The rear cover 2 is inserted into the recess 7 of the unit body 1. In this case, as shown in FIG. 4 (B), the spline shaft portion 9 a is lifted upward to retract the fork 8 from the inside of the recess 7. When the rear cover 10 is completely inserted into the recess 7, the locking claw 3 is locked in the locking hole 4, and the cartridge 10 is attached to the unit body 1. After that, the spline shaft portion 9a is pushed back to the original state, and then the unit main body 1 is put into a paper box as is well known, and then an aluminum pack or the like is applied to the user as a lens-fitted film unit.

The user operates the release button as in a normal camera to take a picture. After shooting, turn the winding knob to wind the film one frame,
At the same time, shutter charging is performed. Thereafter, each frame is photographed by the same operation. The photographed film 32 is wound up on the spool 61 on the film winding cartridge 14 side by the shooting.

After the photographing, the lens-fitted film unit is submitted to the photo lab through the DP reception shop in the same state. At the developing station, the locking between the locking claw 3 and the locking hole 4 is released, and the rear cover 2 is taken out from the unit main body 1. Then, the photo film cartridge is bent around the split groove 16 so that the winding cartridge 1 can be easily wound.
4 can be separated from the rear cover 2. The separated filming cartridge 14 has almost the same appearance as the photographic film cartridge 10 and, moreover, has a film cuing function like the photographic film cartridge 10.
The development processing can be performed in the same manner as that taken with the photographic film cartridge 10 alone. Also,
The remaining cover 2 and the unit body 1 are collected by a film maker for recycling.

In the film maker, the photographing mechanism of the unit main body 1 is inspected, and a new rear cover 2 is reloaded to the accepted one, so that the unit main body 1 is reused.
Further, the rear cover 2 is returned to the raw material such as resin pellets and reused.

When the winding case 11 is not joined, the photographic film cartridge 10 can be used as it is as a cartridge having a film cueing function, which can be loaded into a camera. As described above, when the photo film cartridge is provided as a single product, it is necessary to wind up and store the filmed film in the film cartridge after the shooting is completed. In this case, the film rear end portion 32a can be easily removed from the spool 31. The film rear end portion 32b may be securely fixed to the spool 31 with an adhesive tape so as not to come off. Further, instead of the adhesive tape, a spool dedicated to fixing the film may be used.

Further, in the above-mentioned embodiment, the rib for preventing the winding looseness is provided to enable the film cueing. However, in addition to this, as disclosed in, for example, JP-A-1-306845, An annular protrusion formed on the end of the flange may regulate the outer peripheral end of the photographic film roll, and a protrusion for releasing the regulation by the annular protrusion may be provided near the opening of the photographic film passage. Further, the spool is composed of two parts each having a flange as disclosed in, for example, JP-A-1-306844, and when the spool is rotated in the film feeding direction, the flanges come close to each other. The film roll may be sandwiched and the rotation of the spool may be transmitted to the outer peripheral portion of the photographic film. Also, Japanese Patent Application No. 1-172594
As disclosed in No. 1, the protrusion on the inner wall of the cartridge body presses the side surface of the flange toward the photographic film roll to deform a part of the flange so as to sandwich the outermost peripheral portion of the photographic film roll. You can

Further, in the above-described embodiment, the dividing groove 16 forms a thin portion so that stress is concentrated to separate the winding cartridge 14 from the film transfer frame 13 at the position where the dividing groove 16 is formed. However, in addition to this, the separating means may be configured by forming this portion with a material that can be easily broken.

Further, in the above embodiment, as shown in FIG. 9, the winding cartridge 14 is also provided with the winding loosening preventing ribs 45 and the tip separating claws 48 so as to have the function of finding the film head. It may have a function of simply winding the film. In this case, in order to prevent the film rear end portion 32a from being completely wound into the winding cartridge, the film is locked in the locking hole of the rear end portion 32a and further wound into the cartridge. It is advisable to form a locking claw that regulates the removal at the film entrance.

As shown in FIG. 10, the unit main body 70 is formed with a recess 72 into which the photographic film cartridge 71 is simply inserted, and the photographic film cartridge 71 is housed in the recess 72 to form a lens-fitted film unit. You may do so. Also in this case, the locking claws 73 and the locking holes 74 similar to those in the above-described embodiment are provided, so that the photographic film cartridge 7 is attached to the unit main body 70.
1 is detachably stored. Further, in the recess 72 after the photographic film cartridge 71 is stored, the light shielding sheet 75
Paste. At the time of development processing after shooting, the light shielding sheet 75
After peeling off, the photographic film cartridge 71 is taken out from the recess 72, and then bent from the dividing groove 76 to separate the winding cartridge 77 from the transfer frame 78. Then, it is developed in the same manner as other photographic film cartridges.

In the above embodiment, the photographic film cartridge 6 is composed of the photographic film cartridge 10 and the winding case 11, and the winding case 11 is provided with the winding cartridge 14. As shown in FIG. 11, the winding case 82 may be configured by integrating the photographic film cartridge 80 and the film transfer frame 81. In this case, the film storage case 83 is connected to the tip of the winding case 82, and a hole 84 into which a film winding shaft (not shown) is inserted is formed in the lower portion of the film storage case 83. The photographic film cartridge thus configured may be loaded into the film unit after winding the film from the photographic film cartridge 80 into the film storage case 83 in a dark room. In this case, it is necessary to incorporate the photographic film cartridge into the unit main body in a dark room state, but on the other hand, the photographic film cartridge can have a simple structure.

Further, the unit main body 70 shown in FIG.
The rear cover attached to the back surface of the above may have the structure shown in FIG. A hook 91 is integrally formed on the rear cover 90 and a film transfer frame 92 is fixed thereto. One end 93 of the film transfer frame 92 is connected to a wall 90a that is connected to the rear cover 90 to form a film supply chamber 94. A separate winding cartridge 95 is fitted between the other end of the film transfer frame 92 and the rear cover 90, and the hook 91 is locked in a groove 95a formed in the outer wall of the winding cartridge 95. As a result, the winding cartridge 95 is integrated with the rear cover 90. Then, a film containing a film is used as the winding cartridge 95, the film is sent out from the winding cartridge 95 and stored in the film supply chamber 94 side, and then the cover 90 is fixed to the rear surface of the unit main body 70. deep. If an opening for inserting a winding shaft is formed on the upper surface or the bottom surface of the film supply chamber 94, the film can be easily wound into the film supply chamber 94 by a dark room work, and this opening is formed in the unit main body 70. Light is shielded when the rear cover 90 is assembled.

At the time when the photographing is completed, all the photographed films are wound in the winding patrone 95.
Therefore, at the developing station, the rear cover 90 is attached to the unit main body 7
After separating from 0, you can easily take out the winding patrone 95 simply by removing the hook 91,
The development processing work can be made more efficient. Also,
If a photographic film cartridge which is generally widely used is used as the winding cartridge 95, the conventional film developing equipment can be used as it is. Of course, the unit main body 70 can be recycled as it is after the rear cover 90 is removed.

[0035]

As described above, according to the present invention,
Since the photographic film cartridge is detachably attached to the back side of the unit main body, the photographic film cartridge can be easily taken out from the unit main body at the developing place after photographing without breaking or damaging the unit main body. Therefore, after confirming the operation of the unit body, the unit body can be recycled by storing a new photographic film cartridge therein.

Since the photo film cartridge has a split groove formed between the winding cartridge and the film transfer frame, the winding cartridge can be separated by the split groove. Since the winding film cartridge after the separation has the same form as that of the other photographic film film cartridges, the photographed film can be processed in the same manner as other photographic film film films. For this reason, it is not necessary to provide a film take-out device dedicated to the photographic film cartridge, and the processing can be performed by the existing equipment at the developing station.

Further, since the photographic film cartridge and the take-up case are joined to form the photographic film cartridge, the photographic film cartridge can be shared by the photographic film cartridge without using a complicated manufacturing facility dedicated to the film cartridge. A cartridge can be manufactured. Moreover, since the photographic film cartridge is simply manufactured by joining the winding case to the photographic film cartridge, a bright room operation is possible and the manufacturing is easy. Also,
Even when the photo film cartridge is attached to the unit body, the work in the bright room is sufficient, and the lens-fitted film unit can be easily manufactured.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a lens-fitted film unit of the present invention.

FIG. 2 is an exploded perspective view showing a rear cover.

FIG. 3 is a perspective view showing a state where the unit main body is viewed from the back side.

FIG. 4A is a sectional view showing a state in which the spline shaft portion is shifted downward to be used, and FIG. 4B is a sectional view showing a state in which the spline shaft portion is shifted upward to allow a rear cover to be inserted. is there.

FIG. 5 is a perspective view showing a photographic film cartridge.

FIG. 6 is a cross-sectional view showing a photographic film cartridge.

FIG. 7 is a perspective view showing a photographic film cartridge.

FIG. 8 is a cross-sectional view showing a locked state of the spool of the photo film cartridge and the rear end portion of the film.

FIG. 9 is a cross-sectional view showing a film winding cartridge.

FIG. 10 is a perspective view showing another film unit with a lens in an exploded manner.

FIG. 11 is a perspective view showing another photographic film cartridge.

FIG. 12 shows an example in which a winding cartridge is detachably attached to a rear cover. FIG. 12A is a cross-sectional view of the relevant part, and FIG.
Is a front view thereof.

[Explanation of symbols]

 1,70 Unit body 2 Rear cover 3 Locking claw 4 Locking hole 5 Rear cover body 6,71,80 Photo film cartridge 7,72 Recess 10 Photo film cartridge 11 Winding case 13 Transfer frame 14 Winding patrone 15 Exposure Opening 16 Split groove 31,61 Spool 32 Negative film 45,46 Rib 62 Film guide 90 Rear cover

Claims (2)

[Claims] 1. A lens-fitted film unit main body having a photographing lens, a film winding mechanism, and a shutter mechanism built-in, a rear cover detachably attached to the back side of the lens-fitted film unit main body, and an integral unit provided on the rear cover. The photographic film cartridge comprises a photographic film cartridge, and a photographic film cartridge in which a photographic film cartridge is integrated into a film transfer frame having an exposure opening and a film wrapping film cartridge for wrapping the film. A lens-fitted film unit characterized in that it is constructed by joining a photo film cartridge and a split groove is formed between the film transfer frame and the winding cartridge. 2. A film film unit main body with a lens, which incorporates a taking lens, a film winding mechanism, and a shutter mechanism, a photo film cartridge, and a photographic film cartridge loading recess formed on the back side of the lens film film unit main body. The photo film cartridge, which comprises a light shielding member for covering the recesses and shields light, has a film transport frame having an exposure opening and a film winding cartridge for film winding, and a photo film roll case, and the photo film roll. A lens-fitted photo film unit, characterized in that it is constructed by joining a stored photo film patrone, and a split groove is formed between the film transfer frame and the take-up patrone.