JPH04251250A - Manufacture of film unit with lens - Google Patents

Abstract

PURPOSE:To provide the manufacture of a film unit with a lens which is excellent in automatic assembly suitability, whose price is low, and whose reliability is high. CONSTITUTION:In a darkroom condition, a cartridge 20 is held by a grip arm 25, and the film 21 is taken up by a winding shaft 22. The grip arm 25 and the winding shaft 22 are moved toward a main body base part 2, the cartridge 20 and a film roll 23 are inserted in a cartridge chamber 12 and a film roll chamber 11 through apertures 11a and 12a. After the grip arm 25 and the winding shaft 22 are pulled out, a back cover 3 covers the main body base part 2 and is fixed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a photographic film packaging unit (hereinafter referred to as a "lens-equipped film unit") which is provided with an exposure function for photographing.

0002

2. Description of the Related Art In conventional photography, it is customary to load a film into a camera. However, only a small number of people carry a camera with them at all times, and this poses the inconvenience of not being able to take a photo if the camera is not at hand. In that case, it would be very helpful if you could purchase a lens-equipped film unit from your local store just like you would purchase regular photographic film, and then request DPE for each lens-equipped film unit after shooting, just like conventional photographic film. It's convenient. U.S. Patent No. 2 is considered to be similar to such a lens-fitted film.
The technology was disclosed in No. 933027 and Utility Model Publication No. 39-33924.

[0003] The lens-fitted film shown in these
Due to the need to have a simple structure, easy assembly, and low cost production, the unit is made by gluing the camera body and camera back, which house the photographic mechanism and film, and has a roll film supply chamber and a winding chamber. The structure is very simple, with the exposure chamber partition located between them connected to the main body and the lid. In order to remove the photographed film, the lens-equipped film unit had to be broken or disassembled and opened. On the other hand, in July 1986,
A film unit with a lens (product name: Utsurun desu) loaded with a 110 film cartridge by the applicant.
) are on sale.

By the way, in the above-mentioned lens-equipped film unit using the 110 film cartridge, since the screen size of the film is small, it becomes difficult to obtain clear printed photographs when it is desired to increase the print size. From this point of view, attempts have been made to use a 35 mm wide film (135 film) in a lens-equipped film unit. In addition, this 35mm wide film is based on the international standard (ISO: 1007-197).
If you use a cartridge with a cartridge specified in the 9th edition) and have a structure that makes it impossible to remove the film unit with lens without disassembling or destroying it, the user will not be able to reuse it and the film will be damaged. A lens-equipped film unit may be used in photo labs that can use current processing systems.

[0005]

However, when the above-mentioned 35 mm film with a cartridge is incorporated into a lens-fitted film unit, a new problem arises. That is, since the cartridge stores unexposed film in a light-shielded state, it is easy to assemble it into the main body of the lens-equipped film unit.
After using the lens-equipped film unit, the photographed film is pulled out from the cartridge, and the work of taking it out from the main body must be done in a darkroom. Such darkroom work becomes extremely troublesome when a large amount of development processing is taken into consideration.

[0006]Furthermore, if the exposed film that has been pulled out of the cartridge is rewound into the cartridge, it becomes possible to take out the film in a bright room. This will lead to an increase in costs. Furthermore, in the developing laboratory, it is necessary to rewind all of the collected lens-fitted film units, and although this makes it possible to work in a bright room, this is not very desirable from the point of view of work efficiency. On the other hand, Utsukai Showa 48-466
No. 22 and No. 53-127934 disclose manual pre-wind cameras. These pre-wind cameras are designed to pull out the unexposed film before shooting, but if this was done manually, inexperienced photographers would have to turn the winding knob without doing this. There is a risk of erroneous operation, and if such an erroneous operation is performed, the film reader will be caught inside the cartridge. Even if such a mechanism is applied to a lens-equipped film unit, it is not possible to load film by opening the back cover of a lens-equipped film unit like a camera, so the lens-equipped film unit cannot be loaded even though it will never take a picture. The unit becomes unable to take pictures.

The present invention has been made in view of the above-mentioned background, and has an object to make it possible to easily take out photographed film from the main body of the lens-equipped film unit in a bright room without increasing the cost of the film unit. An object of the present invention is to provide a method for manufacturing a film unit with a lens.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the manufacturing method of the present invention incorporates an unexposed film in advance,
In a method for manufacturing a lens-equipped film unit, in which exposure is applied through an exposure function by operating a shutter means to the film, and the film cannot be reused after being taken out after shooting, the film unit is manufactured in a dark room. There is a first step in which the unexposed film is pulled out from the cartridge, in which the end of the film is fixed to the core, and wound into a roll; a second step of loading the film roll and the cartridge into the unexposed film roll storage section and the cartridge storage section of the unit main body, respectively, with the film portion wound into a roll shape;
The third step is to connect the back light shielding means to the unit main body from the back side of the film to shield the inside of the main body from light.

[0009]

[Example] In FIG. 3 showing the appearance of a lens-fitted film unit, the unit body 1 includes a body base 2 made of plastic molding, and a back cover 3 that closes the opening on the back side of the body base 2 in a light-tight manner. Consisting of The main body base 2 is provided with a photographing lens 4, a finder window 5, and a release button 6, and also contains photographic mechanisms such as a shutter and a film winding mechanism. The back cover 3 is fixed to the main body base 2 by ultrasonic welding or the like, and cannot be removed by the user. More preferably, the unit main body 1 is always covered by a paper box (not shown), and holes are provided in the paper box to expose the photographing lens 4 and the release button 6, so that they can be operated through these holes.

In FIG. 1, which shows the state before the back cover 3 is attached to the main body base 2, the main body base 2 is formed with an opening 2a extending from the back surface to the bottom. The shape of is determined. The main body base 2 is provided with an unexposed film roll chamber (hereinafter simply referred to as a film roll chamber) 11 and a cartridge chamber 12 so as to sandwich the exposure frame 10 therebetween. A film winding fork 14 protrudes from the upper wall of the cartridge chamber 12 and rotates counterclockwise in the figure in conjunction with the operation of the winding knob 8. Further, the film support surface 15 on which the exposure frame 10 is formed is raised toward the back cover 3 side as shown in the figure.
A sprocket 16 protrudes from the top.

Inside the unit main body 1 consisting of the main body base 2 and the back cover 3, there is a cartridge 20 for storing a 35 mm wide film 21 in advance in a light-shielded manner during assembly, and a cartridge 20 that is pulled out from the cartridge 20. Film 21 and
The film roll chamber 11 and cartridge chamber 12 are respectively loaded. The cartridge 20 and film 21 used here are those specified by international standards,
The rear end of the film 21 is fixed to a winding core 28 provided on the cartridge 20. In this loading operation, a loading jig as shown by the two-dot chain line in the figure can be used. That is, the unexposed film 21 pulled out from the cartridge 20 is wound around the winding shaft 22 to form a film roll 23. On the other hand, the cartridge 20 has a grip arm 2.
The extended portion 26 between the cartridge 20 and the film roll 23 is supported by a support plate 27 so as to be slightly curved upward. Of course, these loading jigs can be configured as one loading device in which each of them is connected.

Patrone 2 held by a loading jig
0 and the film roll 23, the loading jig is attached to the cartridge 2.
0 by moving each opening 11 in the axial direction.
a, 12a and is loaded into a predetermined position on the main body base 2. As a result, the core 28 (see FIG. 2), which is rotatably provided on the cartridge 20 and to which one end of the film 21 is engaged, engages with the fork 14. Further, since the spread portion 26 of the film is lifted upward by the support plate 27, the upper edge of the spread portion 26 will not be caught by the sprocket 16 when loading the film.

After the film roll 23 and the cartridge 20 are inserted into the film roll chamber 11 and the cartridge chamber 12 in this way, the holding of the grip arm 25 is released, and the winding shaft 22 is inserted into the slit 2, for example.
Bend it at part 2a to make it smaller in diameter. This allows each of the loading jigs to be retracted in the axial direction. As a result, the cartridge 20 remains in the cartridge chamber 12 and the film roll 23 is placed in the film roll chamber 11. At this time, the film roll 23 tries to unwind due to its own curling behavior, but
Since the outermost circumference is regulated by the wall defining the film roll chamber 11, the diameter remains at a predetermined value.

Thereafter, the back cover 3 is placed over the opening 2a so as to shield it from light, and is fixed to the main body base 2 by ultrasonic welding. A curved film regulating surface 30 similar to the film supporting surface 15 on the main body base 2 side is formed on the inner surface of the back cover 3. Therefore, by placing the back cover 3 on the main body base 2 while pressing the film 21 from above and fixing it, the upwardly curved extended portion 26 of the film can be supported as shown in FIG. Face 15
The film is pressed to the desired exposure position without lifting or undulating the film surface. Also, at this time, the sprocket 16 comes to mesh with the perforation. Of course, a portion of the film regulating surface 30 is provided with an opening for receiving the protruding portion of the sprocket 16.

A step 32 is formed at one bottom of the back cover 3, that is, the bottom of the film roll chamber 11, and the bottom surface of the film roll chamber 11 side is higher than that of the cartridge chamber 12. . This is because the film roll chamber 11 needs to support the lower edge of the film roll 23 itself, and the step 32 allows the film 21 to be kept horizontal. In addition, the unit body 1
When using a single lens made of plastic molding etc. as the photographing lens 4 in order to reduce costs, by curving the film surface at the exposure position as described above, the effect of distortion can be reduced and the periphery of the screen can be improved. This is effective in improving the focus of the film 21 and is also advantageous in correctly positioning the film 21 at the exposure position.

The above-mentioned film loading and back cover 3 attachment operations both need to be performed in a dark room, but it is simple to load the film from the axial direction and attach the back cover 3 from above the film surface. These operations can be easily automated by using the above-mentioned loading jig, etc., which is very effective in reducing assembly costs.

[0017] Also, cartridge 20, film roll 2
3 from the axial direction as described above, it is also possible to load them into the main body base 2 in the following manner. That is, after the cartridge 20 is loaded into the cartridge chamber 12, the film 21 is wound up by the winding shaft 22 outside the film roll chamber 11. Therefore, the film 21 is wound up while being pulled out diagonally upward (approximately 30° to 45°) from the cartridge 20. After the film 21 is wound onto the winding shaft 22 in this manner, the film roll 23 is loaded together with the winding shaft 22 into the film roll chamber 11. Then, the winding shaft 22 is bent at the slit 22a, removed from the film roll 23, and only the winding shaft 22 is pulled out from the opening 11a. When this loading method is adopted, the opening 12a does not need to be provided at the bottom on the patrone chamber 12 side.

Furthermore, when loading as described above, the winding knob 8 integrally formed with the fork 14 is removed from the main body base 2, and after winding of the film 21 is completed, the core 28 of the cartridge 20 is removed. It is preferable to attach the winding knob 8 by inserting it from the upper surface of the main body base 2 so that the fork 14 is engaged with the winding knob 8. For this purpose, an opening for inserting the winding knob 8 may be formed on the upper surface of the main body base 2.

When the release button 6 is operated, the shutter 3
5 opens and closes, and the extended portion 26 of the film located in the exposure frame 10 is exposed. Thereafter, when the winding knob 8 is rotated, the winding core 28 is rotated via the fork 14, so that the exposed film is wound into the cartridge 20. At the same time, the next film frame is supplied from the film roll 23 to the position of the exposure frame 10, and the sprocket 16 rotates as the film is supplied. When one-frame fixed length feed is detected by the rotation of the sprocket 16, the winding knob 8 is locked and preparation for the next photographing is completed.

By repeating photographing in this manner, the exposed film is wound up in the cartridge 20 one after another. After the photographing is completed, the image is sent to the photo lab as is. When processing at a film processing laboratory, by removing the back cover 3 using a disassembly jig, the photographed cartridge can be taken out in the same condition as before, and from then on, the film can be developed as before. , print processing can be performed.

In order to simplify the work of taking out the cartridge 20 in the photofinishing laboratory, it is convenient to form a pull-top opening at the bottom of the back cover 3 for taking out the cartridge. That is, as shown in FIG. 1, a groove 37 that is easily damaged is integrally formed on the inner wall of the bottom surface of the back cover 3 on the side of the cartridge chamber, and a protrusion 38 is integrally formed on the outer wall. According to this, by hooking a finger on the protrusion 38 and pulling it, an opening along the groove 37 is created, and the photographed cartridge 20 can be taken out from this opening. Furthermore, since the unit main body 1 is partially damaged as a result, it is possible to prevent the film unit main body 1 from being reused without guaranteeing the accuracy of repeated use.

In the lens-equipped film unit shown in FIG. 4, the cartridge 20 and the film roll 23 are each held on the back cover 3 side and then loaded into the cartridge chamber 12 and film roll chamber 11 provided in the main body base 2. I try to do that. A pedestal 39 integrally formed inside the back cover 3 has a film support plate 4 made of a leaf spring.
0 is fixed. The central portion of the film support plate 40 is curved to correspond to the film support surface 15 on the main body base 2 side, and both sides thereof are further bent into a circular shape, forming a cartridge holding portion 41 and a roll holding portion 42, respectively. are doing. The center portions of the cartridge holding portion 41 and the roll holding portion 42 are cut off as shown in the figure, and are formed to be highly elastic.

After winding up and pulling out the unexposed film 21 from the cartridge 20 in a dark room to form a film roll 23, the cartridge 20 and the film roll 23 are attached to the cartridge holding section 41 and the roll holding section 42, respectively. wear it. Since the film roll 23 has a repulsive elastic force in the direction of rolling and spreading, the film roll 23
The outer circumferential surface of the roll holding portion 42 is lightly pressed against the inner surface of the roll holding portion 42 . Note that a notch 40a formed in a part of the upper edge of the film support plate 40 acts as a relief portion into which the sprocket 16 enters.

After the cartridge 20 and film roll 23 are attached to the back cover 3 in this manner, the back cover 3 is integrated with the main body base 2. When doing this, tilt the bottom side of the camera back 3 slightly and remove the cartridge 20.
, the back cover 3 is attached to the main body base 2 along the axial direction of the film roll 23. As a result, the winding core 28 of the cartridge 20
engages the fork 14, and the film roll 23 is loaded into the film roll chamber 11. After that, press the ultrasonic horn against the required part of the back cover 3 or the main body base 2,
Assembly is completed by ultrasonically welding these. Of course, in order to integrate the main body base 2 and the back cover 3, an adhesive or a fitting method may be used.

FIG. 5 shows a cross section of the main part of the lens-fitted film unit thus assembled. The film 21 spread between the cartridge 20 and the film roll 23 is pressed against the film support surface 15 by the center portion of the film support plate 40, and the film 21 is exposed to light in the same manner as the lens-equipped film unit shown in FIG. It is possible to take photographs by correctly positioning the camera behind the frame 10 and performing the same operations. Moreover, the outer surface of the roll holding part 42 is
The holding portion 42 is in contact with the inner wall surface of the film roll chamber 11 of the main body base 2, and the inner surface of the holding portion 42 has a stepped shape that is raised from the inner wall surface. Therefore, in the film roll chamber 11 after assembly is completed, a guide surface is formed that protrudes from the inner wall surface so that only the upper and lower portions of the inner wall surface are in contact with the outermost winding surface of the film roll 23. .

By the way, when the winding knob 8 is rotated, the film 21 is pulled out while the outermost periphery of the film roll 23 is in sliding contact with the inner surface of the roll holding section 42.
This friction may increase the resistance to pulling out the film 21. In the lens-equipped film unit shown in FIG. 4, in order to deal with this problem, the center portion of the roll holding section 42 is cut out and the film roll 23 is held on the upper and lower sides, thereby reducing the contact area with the film roll 23. is decreasing. Further, as shown in FIG. 6, a roll holding part 45 is formed integrally with a film support 44 fixed to the back cover 3, and an uneven part 46 is provided on the inner surface of the part to reduce the contact area with the film roll 23. It is also effective to form

As mentioned above, the cartridge 20 is placed on the back cover 3 side.
By holding the film roll 23, the curling behavior of the film itself is regulated by the back cover 3, and the cartridge 20 and film roll 23 can be loaded in parallel with the work of attaching the back cover 3 to the main body base 2. Our work efficiency will improve.

FIG. 7 shows the appearance of another lens-fitted film unit, and FIG. 8 shows an outline of its overall structure. The unit main body 1 includes a cartridge 20, a film 21, a photographing mechanism and a winding mechanism, and a main body base 50,
It includes a front cover 51 and a back cover 52, which are made by plastic molding. As will be described in detail later, after the cartridge 20 and film 21 are loaded into the main body base 50, the front cover 51 and back cover 52 are fixed to the main body base 50, and the user cannot take out the loaded cartridge 20 and film 21. become unable to do so.

A cartridge chamber 55 and a film roll chamber 56 are formed at regular intervals on the substrate 53 of the main body base 50, and openings 55a and 56a are provided in the lower surface of each chamber. Therefore, when loading the cartridge 20 and film 21 into the main body base 50, the cartridge 20 and the film 21 can be loaded in a dark room.
After the films 21 are pulled out from the film roll 23 and assembled into a film roll 23, they can be loaded from the bottom side through the openings 55a and 56a. In addition, film 21
It is also possible to load the cartridge 20 before pulling out the film roll chamber 56 and then draw out the film 21 into the film roll chamber 56.

Patrone chamber 55 and film roll chamber 56
A planar connecting portion 57 is provided between the two, and an exposure frame (corresponding to the exposure frame 10 in FIG. 1) is formed in this connecting portion 57. A rectangular frame 58 is formed around the cartridge chamber 55, the film roll chamber 56, and the connecting portion 57, and the opening 55a, for loading the cartridge 20 and the film roll 23, is provided on the lower surface of the frame 58. An opening communicating with 56a is formed. At the top of the cartridge chamber 55, a fork (see FIG.
(corresponding to the fork 14) is provided. This fork is integrated with a winding knob 60, and by rotating the winding knob 60 in the direction of the arrow in the figure, the winding core 28 is rotated in a direction that draws the photographed film 21 into the cartridge 20. let Note that a tooth row 60a is formed on the outer periphery of the winding knob 60.
A check claw 60b made of a leaf spring is engaged with 0a. This check claw 60b is for preventing the winding knob 60 from rotating clockwise.

The main body base 50 further includes a number display plate 61.
, a locking lever 62, a shutter drive lever 63, a shutter blade 64, a driven sprocket 65 (FIG. 9), and the like. In FIG. 9 showing details of this shutter mechanism, the shutter button 66 is integrated with a plate 67, and the plate 67 is rotatably attached to the front cover 51 via a shaft 68. Further, a rod 69 extending rearward is implanted in the plate 67.

A locking lever 62 provided on the main body base 50
is rotatable around a shaft 71, and its bent piece 62
It is biased clockwise by a spring 72 whose one end 72a is locked to a. The lower end of the bent piece 62a is in contact with a rod 69 installed in a plate 67 that is integral with the shutter button 66. Therefore, when the shutter button 66 is pressed down, the locking lever 62 is rotated counterclockwise via the rod 69. Further, the locking lever 62 is provided with a winding pawl 62b that engages with a tooth row 60a formed on the outer periphery of the winding knob 60 and prevents the winding knob 60 from rotating.

As is well known, the film 21 is provided with perforations 21a, and eight perforations correspond to the length of one frame of the film. This perforation 21a has an 8-tooth driven sprocket 6.
5 is engaged, and with one rotation of the driven sprocket 65,
The film 21 is advanced by exactly one frame. A cam 74 having a notch 74a formed on its outer periphery is provided coaxially with the driven sprocket 65, and the claw 62c of the locking lever 62 is in contact with the outer periphery of the cam 74. When the film 21 is wound up in the direction of the arrow in the figure, the cam 74 also rotates counterclockwise together with the driven sprocket 65.

The shutter drive lever 63 provided on the main body base 50 is rotatable about a shaft 76, and the shutter drive lever 63 is biased counterclockwise by a spring 72 whose one end 72b is hung on a spring receiver 63a. ing. The shutter drive lever 63 comes into contact with the protrusion 62d of the locking lever 62 as shown in FIG. 8, and is held in the position shown in FIG. 10(A) against the bias of the spring 72. An L-shaped bent piece 63b is formed on the shutter drive lever 63, and the tip of this bent piece 63b faces the shutter blade 64 as shown in FIG.

The shutter blade 64 is rotatably attached to the main body base 50 by a shaft 64a, is biased counterclockwise by a spring 64b, and normally comes into contact with a stopper (not shown) and is at the position shown in the figure. It's stopped. In this state, the photographing aperture 78 formed in the main body base 50 is blocked by the shutter blade 64. When the protrusion 62d of the locking lever 62 comes off the shutter drive lever 63 as shown in FIG. 10(B), the shutter drive lever 63 is rotated counterclockwise by the bias of the spring 72.
The claw 64c provided at the end of the shutter blade 64 is kicked away by the bent piece 63b of the shutter drive lever 63,
The shutter blade 64 opens the photographing aperture 78. and,
When the bent piece 63b of the shutter drive lever 63 passes over the claw 64c, the shutter blade 64 is pulled back by the spring 64b and blocks the photographing aperture 78 again.

The driven sprocket 65 is further provided with a coaxial cam 80 for shutter charging, and after the shutter drive lever 63 opens and closes the shutter blade 64 as described above, the cam 80 is moved as shown in FIG. 10(C). , that claw 63
c fits into the notch 80a of the cam 80. This cam 80
Because it rotates together with the driven sprocket 65,
It rotates counterclockwise as the film 21 is wound up. When the cam 80 rotates in this way, the notch 80
The claw 63c fitted into the cam 80 is pushed by the outer peripheral surface of the cam 80, and the shutter drive lever 63 is rotated counterclockwise and returned to its original position.

A single gear 82 is further provided coaxially with the driven sprocket 65. This one-tooth gear 82 meshes with a tooth row 61a formed on the outer periphery of the number display plate 61. Therefore, when the driven sprocket 65 rotates once, the single-tooth gear 82 also rotates once, and the sheet number display plate 61 is rotated by one scale. A scale for displaying the number of sheets is provided on the upper surface of the sheet number display plate 61, corresponding to the rotation pitch of the sheet number display plate 61. This scale indicates the number of film sheets that can be photographed at that time, that is, the number of remaining films.
By observing through the display window 83 formed in the camera, the number of frames of the film that can be photographed can be confirmed. A plate-shaped lens holder 85 is attached to the front surface of the shutter blade 64, as shown in FIG. The lens holder 85 has a recess 85 at a position corresponding to the photographing aperture 78.
a is formed, and a lens 86 made by plastic molding is placed in this recess 85a.

A shutter button 6 is provided on the top surface of the front cover 51.
An opening 87 is formed to expose the opening 8.
7, the shutter button 66 can be pressed. On the front of the front cover 51 is a light-shielding tube 8 for a finder.
8, a circular opening 89 and a rectangular small hole 90 are provided. The opening 89 is formed to be located on the optical axis of the lens 86, and the small hole 90 is formed at a position corresponding to a locking claw 91 provided on the main body base 50. By engaging the locking claws 91 in the small holes 90, the front cover 51 can be temporarily secured to the main body base 50.

The back cover 52 has a back plate 93 and a bottom plate 94 in a substantially L-shape. The light shielding tube 8 of the front cover 51 is attached to the back plate 93.
An opening 95 is formed at a position corresponding to 8 and is used as a finder eyepiece. Further, as shown in FIG. 7, the horizontally long opening 96 formed in the back plate 93 has
Exposing part of 0 to the outside. A curved film support surface 98 is formed on the inner surface of the back plate 93, which regulates the position of the film 21 located in the exposure frame of the main body base 50, and serves as a guide surface when the film 21 moves during winding.

When the back cover 52 is assembled to the main body base 50,
A bottom plate 94 is located on the lower surface of the substrate 53, and the cartridge chamber 55
, an opening 55a formed at the bottom of the film roll chamber 56.
, 56a. Therefore, Patrone 2
0. When each film roll 23 is loaded into a predetermined position on the main body base 50 and the back cover 52 is covered, the film 2
1 is housed in the unit main body 1 in a light-tight state. Thereafter, the main body base 50 and the back cover 52, as well as the front cover 51 and the side edges 52a and 52b of the back cover 52, are fixed by ultrasonic welding.

The effects of the above configuration are as follows. As the shutter button 66 is pushed down from the initial state shown in FIG. 10(A), the locking lever 62 is rotated counterclockwise by the rod 69. When the locking lever 62 rotates in this way, the locking lever 62 rotates as shown in FIG. 10(B).
The locking of the shutter drive lever 63 by the protrusion 62d is released, and the shutter drive lever 63 is rotated counterclockwise by the bias of the spring 72. This shutter drive lever 63
As the shutter blade 64 is rotated, the shutter blade 64 is opened and closed, and the film 21 located in the exposure frame is exposed.

Further, as described above, when the locking lever 62 rotates counterclockwise to open and close the shutter blade 64, the claw 62c comes out of the notch 74a of the cam 74. and,
As shown in FIG. 10(C), the shutter drive lever 63
The protrusion 63d engages with the upper edge of the protrusion 62d of the locking lever 62, whereby the locking lever 62 is held in the same position against the bias of the spring 72. In addition, the locking lever 6
Since the second pawl 62b retreats from the tooth row 61a formed on the outer periphery of the winding knob 60, the winding knob 60 can be rotated.

After one photograph is taken, when the winding knob 60 is rotated clockwise in FIG. The photographed film 21 is then pulled into the cartridge 20. When the film 21 is drawn into the cartridge 20, the driven sprocket 65 rotates counterclockwise, and the cam 74 rotates accordingly.
, 80, and the one-tooth gear 82 rotates. When the cam 80 rotates, the cam surface pushes the shutter drive lever 63
The claw 63c is pushed, and the shutter drive lever 63 is rotated clockwise. As a result, as shown in FIG. 10(D), the projection 63d of the shutter drive lever 63 is retracted from the projection 62d of the locking lever 62, and the locking lever 62 is moved by the spring 7.
It rotates clockwise due to the bias of 2. Then, the protrusion 62d of the locking lever 62 is connected to the protrusion 62d of the shutter drive lever 63.
3d, and the claw 62c comes into contact with the outer periphery of the cam 74.

When the film 21 is moved by one frame and the driven sprocket 65 reaches one rotation, the notch 7 of the cam 74
The claw 62c of the locking lever 62 is fitted into the locking lever 4a, and the locking lever 62 further rotates clockwise. As a result, the cam 74
is prevented from rotating, and the pawl 62 of the locking lever 62 is prevented from rotating.
b engages with the tooth row 60a of the winding knob 60, and rotation of the winding knob 60 and the driven sprocket 65 is prevented. In this way, winding of the film 21 is completed, and FIG.
As shown in A), the counterclockwise rotation of the shutter drive lever 63 is returned to the initial state in which it is locked by the protrusion 62d of the locking lever 62. When the driven sprocket 65 rotates once, the number display plate 61 advances by one scale via the one-tooth gear 82, and the number of remaining frames that can be photographed is displayed through the display window 83.

Further, a cam 61 is provided on the bottom surface of the sheet number display plate 61.
b is provided integrally. After the cam 61b finishes shooting the last frame of the film 21, the winding knob 61
In the process of rotating the locking lever 62, the rising piece 6
2e and rotates the locking lever 62 counterclockwise. At the same time, the toothless portion 61c of the sheet number display plate 61 moves to the meshing position with the single tooth gear 82. Locking lever 6
2 is rotated in this manner, the claw 62c engages the cam 74.
The driven sprocket 65 becomes free when it comes out of the notch 74a, and even when the single tooth gear 82 rotates, the number display plate 6
1 does not rotate, so even if the winding knob 60 is rotated in this state, the winding is not stopped and the entire film 21 can be wound into the cartridge 20. When the entire film 21 is wound into the cartridge 20 in this manner, the work of taking out the cartridge at the photofinishing laboratory becomes easier.

Furthermore, as shown in FIG. 11, the number display board 61 is provided with a display section T for the number of aerial shots for testing (for example, 3 to 4 shots) in addition to the specified number of shots, for example 24. The blank portion is allocated to the rear end side of the film 21, that is, the margin on the side fixed to the core 28 of the cartridge 20. Therefore, by using this part, the shutter operation, film advance operation, etc. can be inspected even after the lens-fitted film unit is assembled.

According to the above shutter mechanism, the film core 28 is directly rotated by the winding knob 60 through the fork that engages with the film core 28 of the cartridge 20.
When the photographed film 21 is wound up by one frame, the rotation of the driven sprocket 65 and the rotation of the winding knob 60 are prevented by a common locking lever 62. Therefore, it is possible to improve the reliability of one-frame fixed-length feeding while making the shutter mechanism a simple structure suitable for a lens-fitted film unit.

FIGS. 15, 16 and 17 show a film loading device for automatically loading the cartridge 20 and film roll 23 into a unit main body having almost the same structure as the lens-fitted film unit already explained in FIG. This is an example. This film loading device 150 is used by being installed on a base plate 152, as will be described in detail later. As shown in FIG. 18, the base plate 152 is provided with frames 152a and 152b,
The main body base 2 and the back cover 3 that constitute the unit main body 1 are positioned and placed.

15, 16, and 17 showing the film loading device 150, the film loading device 150 supported on a base plate 152 has a pair of guide bars 1
pedestals 156 and 157 that hold 54 and 155, a movable frame 158 that is slidably supported by the guide bars 154 and 155, and a rotating arm that is rotatably supported by this movable frame 158 via a shaft 159. 16
0. This rotating arm 160 is moved by a spring 162 provided between it and the movable frame 158 as shown in FIG.
16, and is normally placed in the raised position shown in FIG. 16.

The movable frame 158 is normally located at a ready position away from the main body base 2 as shown in FIG. 15 or 17 by means of a coil spring 162 suspended between the movable frame 158 and the pedestal 156. In addition, the moving frame 15
8 has a ring-shaped magnet 1 protruding from its front surface.
63 is fixed with a screw. This magnet 163 is shown in FIG.
As shown in , the end face of the cartridge 20 is held by suction. Furthermore, the moving frame 158 is provided with an eject rod 165 that is moved in the axial direction. This eject rod 165 is urged downward in FIG. 15, that is, in the backward direction, by a spring 166. A rotatable fork 165a that engages with the core 28 of the cartridge 20 is provided at the front end of the eject rod 165, and the fork 165a is urged forward by a spring (not shown).

An air cylinder 169 is rotatably supported by the rotating arm 160 via a bearing 168. A gear 170 is provided on the rear end side of this air cylinder 169.
is fixed and axial movement is prohibited. The air cylinder 169 drives the winding shaft 172. The winding shaft 172 is urged in the projecting direction by a spring in the air cylinder 169, and when air is sucked from the air cylinder 169, the winding shaft 172 retreats from the position shown in FIG.
Its tip is moved below the bottom surface of the main body base 2. When the air cylinder 169 rotates, the winding shaft 172 rotates together with the air cylinder 169.

The distance between the center of the winding shaft 172 and the central axis of the eject rod 165 when the rotating arm 160 is lowered to the position shown by the two-dot chain line in FIG.
and the distance between the centers of the film roll chamber 11, respectively. A slit 172a is formed at the tip of the winding shaft 172, and a leaf spring 173 for elastically holding the tip 21a of the film leader is provided between the slits 172a. Note that when the leading end of the film is inserted into the slit 172a of the winding shaft 172 and wound up into a tight roll, the leading end of the film will have an acute curl. For this reason, as shown in FIGS. 21(A) and 21(B), by tapering the corner part of the winding shaft 172 that connects to the slit 172a, or by rounding off the corner, an acute angle is formed at the tip of the film. It is designed to prevent curling.

A non-return lever 175 is further pivotally attached to the shaft 159, which is the rotation axis of the rotation arm 160. A clutch pawl (not shown) is formed at the tip of the non-return lever 175, and the clutch pawl engages with the gear 170 by biasing the non-return lever 175 with a spring. Thereby, the gear 170 can only rotate clockwise in FIG. 16.

The film loading device 150 constructed as described above is used in a manufacturing line as shown in FIGS. 19 and 20. 19 shows the overall arrangement of the manufacturing line, and FIG. 20 shows a part of it in a plan view, showing the positional relationship between the base plate 152 and the loading station 177.

The base plate 152 having the frames 152a, 152b and the automatic film loading device 150 includes:
A plurality of units are attached to a conveyor belt 178 and used. The conveyor belt 178 is fed in steps to the right in the figure by a well-known drive mechanism, and passes through a dark room 180 on the way. As shown in the figure, a unit supply process, a cartridge supply process, a darkroom work process, and a product removal process are determined in accordance with the feeding position of the conveyor belt 178. That is, as a method for manufacturing a lens-equipped film unit, first, an unexposed film 21 is pulled out from a cartridge 20 held in a predetermined position without causing fogging, and an unexposed film roll 23 is produced.
The cartridge 20 is brought closer to the winding fork 14 in the main body base 2 from the axial direction, and the winding core 28 of the cartridge 20 is
a step of engaging the unexposed film roll 23 with the fork 14, a step of dropping the unexposed film roll 23 into the film roll chamber 11 of the main body base 2, a step of extracting the winding shaft 172 from the film roll 23, and then a step of putting the back cover 3 on the main body base 2. The process of making a dark box is detailed.

In the unit supply step, the main body base 2 and the back cover 3 are manually supplied to predetermined positions on the empty base plate 152. In the cartridge supply process, the cartridge 20 with only the leader portion pulled out and the unexposed film 21 wound and stored in the cartridge chamber 12 of the main body base 2 supplied in the unit supply process.
Load. For this reason, a loading station 177 is provided during the cartridge supply process. When the base plate 152 is sent to this loading station 177, the arm 181 (FIG. 15,
(see Figure 17) protrudes by a certain stroke, moving frame 1
58 is pushed forward against the coil spring 162. When the moving frame 158 is extended forward in this way,
A magnet 163 provided on the front side attracts and holds the cartridge 20 loaded in the cartridge chamber 12.

The loading station 177 causes the arm 181 to protrude by a certain stroke as described above, and then retreats to return to the initial position. Along with this, moving frame 1
58 is moved to the ready position shown in FIG. 15 by the bias of the coil spring 162. Note that the cartridge 20 has a magnet 163.
Since it is held by suction, it can be partially pulled out from the cartridge chamber 12 as shown in the figure. At this time, the fork 165a at the tip of the eject rod 165
is elastically engaged with the winding core 28 via a spring. When the core 28 is rotated slightly in the next process, they are securely engaged, and when the unexposed film 21 is pulled out from the cartridge 20, a slight back tension is applied to the core 28 via the fork 165a. It has become.

When the movable frame 158 returns to the ready position shown in FIG.
It meshes with a gear 170 fixed to 9. At this time, the support piece 183 protrudes from the loading station 177 and enters under the receiving portion 185 fixed to the bottom surface of the rotating arm 160, so that when the drive gear 182 meshes with the gear 170, the rotating arm 160 descends. Never. and,
After the drive gear 182 is adjusted and rotated to align the slit 172a of the winding shaft 172 to a predetermined initial position, the drive gear 18
2 and the support piece 183 are retracted.

After positioning the winding shaft 172 in this way, the tip 21a of the film leader protruding from the cartridge 20 is manually inserted into the slit 172a of the winding shaft 172. As a result, the tip portion 21a is attached to the winding shaft 1.
It is held by a leaf spring 173 provided at 72.

When the conveyor belt 178 is stepped and the film loading device 150 is moved together with the base plate 152 into the dark room 180, the film loading device 150 is first operated by the rewinding station 187. The unwinding station 187 is also provided with the drive gear 182 and the support piece 183 and, similar to the operation at the loading station 177, is operated by an air cylinder 169.
The gear 170 fixed to is rotated clockwise in FIG. As a result, the winding shaft 172 is connected to the air cylinder 169.
The film 21 is pulled out from the cartridge 20 and wound. Since a slight back tension is applied to the film 21 by the aforementioned fork 165a, the film 21 can be wound onto the winding shaft 172 without loosening. Note that the drive gear 18
2 is a motor (
(not shown), a slip mechanism is also provided in this drive system, and the drive gear 182 is rotated with a predetermined torque. Also, while winding the film around the winding shaft 172, the cartridge 20
The tip of the cartridge 20 is fixed with a holder (not shown) so that it does not come off the magnet 163.

After the winding shaft 172 is started, the rotation of the drive gear 182 is automatically stopped after a predetermined period of time has elapsed. Since the length of the film 21 wound and stored in the cartridge 20 is known in advance, if the predetermined time is set according to the length, the cartridge 21 All the films 21 inside are on the roll shaft 1.
72, and the film roll 23 is pulled out to the winding shaft 172.
is formed. In this way, from the main body base 2 to the film 2
If the roll shaft 172 is rotated with the film roll 1 floating, the film roll 21 will not be damaged and the film roll 2 will be rotated at high speed.
You will be able to make 3. Further, as shown in FIG. 15, if a diagonal notch 15a is provided at the boundary between the cartridge chamber 12 and the film support surface 15, sliding contact between the film 21 to be rewound and the main body base 2 can be ensured. This makes it possible to rewind the film 21 at high speed without damaging it. Note that the load applied to the winding shaft 172 may be detected via the slip mechanism or the like, and the rotation of the drive gear 182 may be stopped when a load greater than a predetermined value is detected.

After the rotation of the winding shaft 172 is thus stopped and the film roll 23 is formed on the winding shaft 172, the driving gear 182 and the support piece 183 are returned to their original positions.
Base plate 152 is moved to the next film loading station 188. During this time, the check lever 175
Since the gear 170 is prevented from rotating counterclockwise, the film roll 23 will not be unwound due to the elasticity of the film 21.

The film loading station 188 includes an arm 181 like the film loading station 177 described above, and as shown in FIG.
As shown in FIGS. 15 and 17, a push-down rod 190 has a roller at its tip for pushing down the rotating arm 160, and as shown in FIGS. It has a stop rod 191 that prevents the eject rod 165 from returning and relatively pushes it out when the eject rod 158 retreats. Furthermore, when the rotating arm 160 is lowered by the push-down rod 190 to the position shown by the two-dot chain line in FIG.
An air nozzle 192 is provided that protrudes toward a nozzle mounting portion 169a provided at the rear end of the air cylinder 169 and is connected thereto.

When the film loading device 150, which has been processed at the rewinding station 187, is step-fed to the film loading station 188, the arm 181 is first pushed out. As a result, moving frame 1
58 is advanced from the preparation position shown in FIG. 15 to the loading position shown by the two-dot chain line in FIG.
inserted into. At this time, since the cartridge 20 is inserted in the axial direction, the fork 14 of the main body base 2 comes to easily engage with the winding core 28 of the cartridge 20.

In this state, since the rotating arm 160 is in the raised position, the film roll 23 formed on the winding shaft 172 is not yet loaded into the film roll chamber 11.
It's waiting above. When the moving frame 158 moves to the loading position by pushing out the arm 181 by a certain stroke, the push-down rod 190 descends. This push-down rod 190 is moved downward by, for example, a motor or an air cylinder device, and the downward movement causes the rotating arm 160 to rotate about the shaft 159 against the spring 162.

In this way, the rotating arm 160 rotates to the position shown by the two-dot chain line in FIG.
5, that is, the center of the cartridge 20, the film roll 2 held by the winding shaft 172
3 is inserted into the film roll chamber 11 from above. By loading the film roll 23 from above, the sprocket 16 protruding from the film support surface 15 is covered with the film 21 from above, which tends to cause problems when loading the film roll 23 from the axial direction. , the upper edge of the film 21 and the sprocket 16 are prevented from coming into contact with each other. In addition, rotating arm 1
The rotation angle of 60 is set to about 35 degrees.

When the push-down rod 190 is lowered by a certain amount and the film roll 23 is inserted into the film roll chamber 11, the air nozzle 192 (see FIG. 15) provided at the film loading station 188 protrudes and the air cylinder 169 is opened. It is connected to the nozzle mounting part 169a. Then, as air is sucked from the air cylinder 169, the winding shaft 172 is gradually retracted. At this time, as the winding shaft 172 retreats, the film roll 23 also tries to retreat, but the film roll 2
3 comes into contact with the front end 169b of the air cylinder 169 to prevent its movement, and as a result, the winding shaft 172 is pulled out from the film roll 23. In this way, the winding shaft 172
When the film roll 23 is pulled out from the film roll 23, the film roll 23 falls into the film roll chamber 11.

After the winding shaft 172 has retreated a certain amount, the stop rod 1 is moved so as to contact the rear end of the eject rod 165.
91 is moved. In this state, the arm 181 is retracted,
The moving frame 158 is retracted to the ready position by the bias of the coil spring 164. Then, the cartridge 20 that is attracted by the magnet 163 also tries to retreat together with the moving frame 158, but as described above, the eject rod 16
As a result, the rear end side of the cartridge 20 is pushed out by the front surface of the eject rod 165, and the cartridge 20 is separated from the magnet 163 and left in the cartridge chamber 12.

When the cartridge 20 and the film roll 23 are inserted into the cartridge chamber 12 and the film roll chamber 11 as described above, and the movable frame 158 returns to the ready position, the push-down rod 190, stop rod 191, and air nozzle 192 are retracted to their original positions, the rotating arm 160 returns to the raised position, and the winding shaft 17
2 is also returned to the protruding position. When the work at the film loading station 188 is thus completed, the base plate 152 is moved to the back cover mounting station 195 provided within the darkroom 180. This camera back mounting station 1
At step 95, the back cover 3 supplied to the base plate 152 is moved and placed at a fixed position on the base plate 152 so as to cover the back surface of the main body base 2, for example, by a robot hand. Needless to say, when the back cover 3 overlaps the main body base 2, it forms a passage that does not prevent the film 21 from being fed from the film roll chamber 11 to the cartridge chamber 12.

After passing through the back cover mounting station 195, the back cover 3 is ultrasonically welded to the main body base 2 by an ultrasonic welding station 196, and the cartridge 20 and film roll 23 are optically welded into the unit main body 1. It becomes tightly encapsulated. Note that a portion 3a of the bottom surface of the back cover 3 is not welded, and serves as a cover that can be opened when taking out the cartridge 20 after use. At this point, the lens-equipped film unit is completed as a product. The completed lens-fitted film unit is sent from the dark room 180 to the light room by the next step of the conveyor belt 178. The assembled lens-fitted film unit is then taken out from the base plate 152 in a product removal process, and after passing through a winding inspection and the like as a final process, it is packaged.

After passing through the product removal process, the movable frame 158 is in the retreated preparation position as shown in FIG. 15, and the rotating arm 160 is in the raised position as shown by the solid line in FIG. Therefore, in the next unit supply process, a new main body base 2 and back cover 3 are supplied,
In addition, if the cartridge 20 containing unexposed film is supplied in the cartridge supply process, the same operation is repeated, and from the darkroom 180, the film roll 23, the cartridge 2
The lens-fitted film unit in which 0 is incorporated in a light-tight manner is sequentially fed out with each step of the conveyor belt 178.

In the above-described embodiment, the cartridge 20 is supplied to the cartridge chamber 12 of the main body base 2 in the cartridge supply process, but the cartridge 20 is supplied to the cartridge chamber 12 of the main body base 2.
If it is held directly by the loading station 17
It is also possible to omit 7. Winding shaft 172 in this case
If the initial position adjustment is performed, for example, at the final stage of work at the film loading station 188, the film leader portion coming out of the cartridge 20 can be inserted into the slit 172a of the winding shaft 172 at the same time.

[0073] Also, the winding shaft 172 is inserted into the film roll chamber 11.
Instead of retracting the film 21 upward and winding it from the cartridge 20, the winding shaft 172 is moved to the film roll chamber 11.
It is also possible to wind up the film 21 while it is located inside. In this case, there is no need to move the winding shaft 172 by the rotating arm 160, which simplifies the structure of the film loading device 150 and further simplifies the film loading operation.

Furthermore, when winding the film 21 onto the winding shaft 172, in order to avoid leaving traces of the slit 172a on the film leader section 21a, the method shown in FIG.
A winding shaft 198 as shown in C) can also be used. This winding shaft 198 has a winding core 20 in which a dividing groove 199 is formed.
0 with a pressing spring plate 201 attached. When the film leader portion 21a is held between the holding spring plate 201 and the winding core 200 and the winding core 200 is rotated counterclockwise, the film is wound up on the winding core 200 together with the spring plate 201. . When the winding shaft 198 is pulled out from the film roll 23, the winding core 200 may be pulled out while being deformed toward the central axis using the split grooves 199. In this way, no creases will be formed in the film leader portion 21a.

Further, as shown in FIG. 22(A), the film 21 can be wound by using the aforementioned winding shaft 172 with a slit together with a sleeve 203 made of an elastic plate such as a leaf spring rolled into a cylindrical shape. is also possible. That is, as shown in FIG. 22(B), the film leader section 21a is inserted into the slit 172a of the winding shaft 172 and held between the leaf springs 173, and then the sleeve 203 is spread out to cover it, and then the film is wound. All you have to do is start the return. Rewinding is complete,
By pulling out the winding shaft 172, the film roll 23 together with the sleeve 203 is left in the film roll chamber 11. Therefore, in this case, the sleeve 203 is used as the winding shaft of the film roll 23 and is used as it is.

This sleeve 203 is placed over the sharply creased portion of the film leader portion 21a, that is, the portion sandwiched between the winding shaft 172 and the sleeve 203, so that the film can be removed after shooting. When the entire sleeve 20 is rolled up into the cartridge 20, the creased portion is pulled out from the slit portion of the sleeve 203. At this time, the slit portion of the sleeve 203 is
The bending tendency of the film leader portion 21a is temporarily corrected by the elastic force that tends to overlap the state shown in (A), and the entire film can be extracted from the film roll chamber 11. Such a sleeve 203 has
It is preferable to use a plastic molded product or a thin stainless steel plate that does not affect photographic properties. Although it is easiest to carry out the present invention using a 35 mm wide film with a cartridge, the present invention is not necessarily limited to this.

[0077]

As explained above, according to the method for manufacturing a lens-equipped film unit of the present invention, during the manufacturing process, unexposed film is pulled out from the cartridge and rolled into a roll. Since the unexposed film is housed in the cartridge, it is not necessary to provide a mechanism for pulling out the unexposed film from the cartridge, and the cost of the lens-fitted film unit can be greatly reduced and the appearance can be improved. In addition, the photographer
Just like a regular camera, all you have to do is turn the winding knob after taking a picture, so it's easy to operate, and there's no risk of erroneous operation. In other words, if you pull out unexposed film before shooting, as with a pre-wind camera,
If an inexperienced photographer turns the film advance knob without doing this, the film leader will get caught inside the cartridge. In such cases, the lens-equipped film unit cannot be loaded with film by opening the back cover like a camera, so the lens-equipped film unit becomes unable to take pictures even though no pictures have been taken. However, in the present invention, such a fatal problem does not occur because the unexposed film is pulled out from the cartridge during the manufacturing process. By using the present invention, the most troublesome film loading operation in the manufacturing process of lens-equipped film units can be simplified, and it is also easy to automate, reducing the manufacturing cost of lens-equipped film units and making them inexpensive and reliable. We will be able to provide products with high quality.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a lens-equipped film unit.

FIG. 2 is a sectional view of a main part of the lens-fitted film unit of FIG. 1;

3 is an external view of the lens-equipped film unit shown in FIG. 1. FIG.

FIG. 4 is an exploded perspective view showing another example of the lens-equipped film unit.

5 is a sectional view of a main part of the lens-equipped film unit of FIG. 4. FIG.

6 is a schematic cross-sectional view showing a modification of the film support member used in the lens-equipped film unit of FIG. 4. FIG.

FIG. 7 is an external view showing still another example of a lens-equipped film unit.

8 is an exploded perspective view of the lens-equipped film unit of FIG. 7. FIG.

9 is a schematic diagram of a shutter mechanism used in the lens-fitted film unit shown in FIG. 7. FIG.

10 is an explanatory diagram of the operation of the shutter mechanism shown in FIG. 9. FIG.

11 is a plan view showing a modification of the number of shots display plate used in the shutter mechanism shown in FIG. 9; FIG.

12 is a plan view showing an example of a film loading device used in the manufacturing process of the lens-equipped film unit shown in FIG. 1. FIG.

13 is a front view of the film loading device shown in FIG. 12. FIG.

14 is a side view of the film loading device shown in FIG. 12. FIG.

15 is a perspective view showing a base plate on which the film loading device of FIG. 12 is installed, and a semi-finished lens-fitted film unit placed on the base plate; FIG.

16 is a schematic diagram of a manufacturing line for a lens-fitted film unit using the film loading device of FIG. 12. FIG.

17 is a partial plan view of the manufacturing line shown in FIG. 16. FIG.

18 is a perspective view showing another example of the winding shaft used in the film loading device of FIG. 12; FIG.

19 is an explanatory diagram when a sleeve is used together with the winding shaft of the film loading device shown in FIG. 12; FIG.

[Explanation of symbols]

1 Unit body 2 Main body base 3　Back cover 10 Exposure frame 11 Film roll chamber 12 Patrone room 14 Fork 16 Sprocket 20 Patrone 21 Film 23 Film roll 28 Winding core 40 Film support plate 41 Patrone holding part 42 Roll holding part 50 Main body base 51 Front cover 52 Back cover 55 Patrone room 56 Film roll chamber 60 Winding knob 61 Number of shots taken display board 62 Locking lever 63 Shutter drive plate 64 Shutter blade 150 Film loading device 152 Base plate 158 Moving frame 160 Rotating arm 165 Eject rod 169 Air cylinder 172 Winding shaft 177 Loading station 180 Darkroom 203 Sleeve

Claims (5)

[Claims] [Claim 1] An unexposed film is built in in advance, and by operating a shutter means on this film, exposure is applied through an exposure function, and the film cannot be reused after being taken out after shooting. In the method for manufacturing a film unit with a lens, the first step is to pull out an unexposed film from a cartridge in which the end of the film is fixed to a core in a dark room and wind it into a roll; With the end of the film fixed to the core of the cartridge and the other film parts wound up into a roll, place the film roll and the cartridge into the unexposed film roll storage section and the cartridge storage section of the main body of the unit, respectively. A method for manufacturing a lens-equipped film unit, comprising a second step of loading the film, and a third step of connecting a rear light shielding means to the unit main body from the back side of the film to shield the inside of the main body. 2. The method according to claim 1, wherein the first step is a step of temporarily engaging the film leader portion to a winding shaft and then winding the film around the winding shaft. A method of manufacturing a film unit with a lens. 3. The lens-fitted film according to claim 2, wherein the first step is a step of winding the film around a winding shaft while the cartridge is at least partially stored in the cartridge storage section. How the unit is manufactured. 4. The method of manufacturing a lens-equipped film unit according to claim 2, wherein the winding shaft around which the film is wound into a roll is removed at the end of the second step. 5. After the third step, most of the outer surface of the unit main body except for the part operated during photographing is covered with an exterior body. A method for manufacturing a film unit with a lens as described in the above.