JP3200711B2 - Roll film storage cartridge and assembly method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a so-called 35 mm
The present invention relates to a cartridge (patrone) for storing a film such as a roll film, and an assembling method thereof.

[0002]

BACKGROUND OF THE INVENTION In the so-called One Ten (110) film,
A double magazine is used in which an original winding section for winding an unphotographed film and a winding section for winding a film that has been shot are integrated at a bridge section. On the other hand, a so-called 35 mm roll film uses a metal container called a patrone, and the photographed portion is sequentially wound around a winding shaft on the camera side, and rewinded into the patrone again when the photographing is completed. It is.

[0003] In what form the roll film is housed in a patrone or cartridge (in the present specification, the cartridge is unified), there are problems in each of the manufacturing stage, the utilization stage, and the processing stage such as development.

[0004] In the production stage, the production efficiency is mainly a problem. The first problem is that the work is performed in a dark room due to restrictions on the properties of the film, and technically, there is a problem of fixing the base end of the film to the spool shaft or assembling the cartridge. Further, there is a problem of reusing the cartridge from the viewpoint of resource saving and waste disposal.

[0005] At the stage of use, the simplicity and reliability of loading into the camera is the most important issue. In the conventional cartridge, however, the leading end of the film is partially exposed as a leader, and the end of the leader must be removed. The camera is automatically wound up after being manually wound around the winding shaft of the camera or manually set on the winding shaft. In any case, the leader is handled manually. , And lacked simplicity and reliability.

Finally, in the stage of processing such as development, there is a problem of taking out the film from the cartridge. When the film is rewound into the cartridge after the shooting is completed, if the film is rewound into the cartridge to the leader portion, it is necessary to use a special jig or break the cartridge to take out the film, which is very complicated. Work efficiency has been significantly reduced.

In order to solve these problems, as shown in US Pat. No. 5,046,682, a cartridge having a structure in which a leader portion is wound in a cartridge and the leader portion is fed from a slit opening by rotating a spool shaft. Has been proposed.

[0008]

Conventionally, in the cartridge as proposed above, the entire assembling process is usually performed in a dark room, so that the assembling, inspection,
Monitoring was difficult. Accordingly, an object of the present invention is to clarify the structure of a cartridge and an assembling method that can minimize the steps performed in a dark room to a minimum.

[0009]

According to the method of assembling a film cartridge according to the present invention, a pair of flanges attached to a spool shaft prevent looping of a film that has been entangled, and is accommodated by rotation of the spool shaft. In a method of assembling a film cartridge having a structure in which a film is pushed out of a cartridge, the cartridge is assembled by combining a temporary fixing mechanism arranged at a joint portion of the cartridge part divided into two parts, and then the cartridge parts maintained in the joined state are joined together. It is characterized in that it is fixed.

Further, in the film cartridge according to the present invention, the pair of flanges attached to the spool shaft prevents the wound film from expanding the loop, and the stored film is pushed out of the cartridge by the rotation of the spool shaft. The film cartridge having the structure is characterized in that the two divided cartridge parts are both formed of synthetic resin, and have a temporary fixing mechanism at their joints to maintain the combined state.

[0011]

Next, the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 shows a cartridge 10 assembled by the method of the present invention. The cartridge 10 is divided into two parts, an upper part 11 and a lower part 12.
A spool shaft 13, a long hub 14, a short hub 15, a pair of flanges 16, 16 are provided inside, where a joint portion of both parts is welded by a method such as ultrasonic vibration and integrated in a light-shielded state. And the roll film 20 are stored.

According to the method of the present invention, the loop expansion of the wound film 20 is prevented by the pair of flanges 16 rotatably attached to the spool shaft 13, and the stored film 20 is rotated by the reverse rotation of the spool shaft 13. In the assembly of the film storage cartridge having a structure in which the cartridge is pushed out from the slit of the cartridge 10, a temporary fixing mechanism is arranged at a joint portion of the cartridge 10 divided into two parts, an upper part 11 and a lower part 12, and Attach the flange 16, assemble the spool shaft 16 into the cartridge 10, and the upper part 11 of the cartridge
And temporary fixing process of the lower part 12 with the lower part 12,
Then, the cartridge 10 is supplied to a dark room or a light-shielded line, the upper part 11 of the temporarily fixed cartridge 10 is removed, and the end of the 35 mm film is fixed to the spool shaft 13. Is mounted and temporarily fixed, and the film 20 is wound into the cartridge 10 by the rotation of the spool shaft 13.
Further, it is characterized in that the cartridge 10 is fixed.

As described above, the assembling method of the present invention has two steps.
The upper part 11 and the lower part 12 of the divided cartridge 10 are temporarily fixed so as to be combined. Therefore, in order to realize this assembling method, a temporary fixing mechanism for temporarily fixing the joint between the upper piece 11 and the lower piece 12 of the cartridge 10, for example, as shown in FIG. A mode in which the projection 18 is provided and 19 corresponding to the joint of the lower part 12 is prepared is preferably used, but is not limited thereto, and a mode using a pinch, a mode using an adhesive tape, and various modes are available. Adhesive may be used or used together for temporary fixing when the film is completely wound and the process is moved to the process for fixing the cartridge.

Further, the temporary fixing of the upper part 11 and the lower part 12 of the cartridge 10 is, for example, as shown in FIG.
It is preferable to use two-stage temporary fixing that is stronger than this.
With this configuration, the cartridge in the loosely temporarily fixed state is supplied to the film winding line, the upper part 11 of the cartridge 10 is removed, and the end of the film 20 is attached to the spool shaft 13 incorporated therein. If the film 20 is wound after the upper part 12 is attached and firmly temporarily fixed after being engaged, the stored film 20 is protected from light. Ten fixing steps can be performed.

The upper part may be assembled after the film has been wound around the spool shaft. The removal of the upper part 11 prior to the winding of the film 20 and the engagement of the end of the film 20 with the spool shaft 13
Includes those performed by automated equipment. In addition, the final fixing of the joint surface between the upper part 11 and the lower part 12 of the cartridge 10 is performed by a method of applying ultrasonic vibration while maintaining the both in a joined state, but the fixing is performed by a different method. It does not exclude things.

[0016]

According to the method for assembling a roll film storage cartridge according to the present invention, only the film winding step needs to be performed only in a dark room or under light shielding, and other processes can be performed in a bright room. Not only is it useful for designing and arranging the lines, but also the efficiency of the assembly work can be greatly improved, and the problems described above are solved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a roll film storage cartridge.

FIG. 2 is a sectional view showing another embodiment of a temporary fixing mechanism.

[Explanation of symbols]

 Reference Signs List 10-cartridge 11-upper part of cartridge 12-lower part of cartridge 13-spool shaft 14-long hub 15-short hub 16-flange 17-rise of flange 18-projection 19-hole 20-film

Claims (2)

(57) [Claims] 1. A method of assembling a film cartridge having a structure in which a pair of flanges attached to a spool shaft prevents a loop of a film from being wound from expanding, and a film stored is pushed out of the cartridge by rotation of the spool shaft. Combining the cartridge by combining the temporary fixing mechanism arranged at the junction of the cartridge parts to be divided into two,
Subsequently, the cartridge parts maintained in the joined state are fixed to each other, and the method of assembling a film cartridge is performed. 2. A film cartridge having a structure in which a pair of flanges attached to a spool shaft prevents a loop of the film from being wound from expanding, and a film stored therein is pushed out of the cartridge by rotation of the spool shaft. A film cartridge, wherein the cartridge parts to be formed are both made of synthetic resin, and have a temporary fixing mechanism for maintaining a combined state at a joint between the cartridge parts.