JPH068590Y2 - Photo film patrone - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improvement for reducing the fiber waste generated from the cut part of the telempe of the cartridge and obtaining a high quality photographic image.

[Conventional technology]

As shown in FIG. 5, a photographic film typified by a roll film for photographic use 135 has a film 7 cut into a certain length, and one end of which is wound around a spool 5 by an adhesive paper 6 and wound on the spool. In this state, the other end of the film, which is inserted into the cartridge body 2, is exposed outside from the winding port or the drawing port 10.

The cartridge case 2 is fitted with caps 4 through fitting grooves 3 at both ends thereof. Then, inside the patrone barrel 2 at the portion forming the winding port or the drawing port 10, there are attached telem strips 8'and 9 ', and the film 2 is sandwiched between them and wound up or reversed. Have been pulled out to. This keeps the internal film from being shielded from light so that it can be easily loaded into the camera in a bright place.

The cartridge body 2 is made by rolling a metal plate material such as tin plate, but before rolling, it is processed into a developed state having a shape as shown in 2'of FIG. ′ And 9 ′ are attached. There are various ways to attach it. For example, as shown in FIG.
Unfolding plates 2'are arranged on a conveyor nest at equal intervals and continuously fed at a constant speed, and adhesive is applied to both sides thereof, and velvet-like narrow fabrics 8 and 9 are on the same speed as the conveyor. And is placed on a predetermined position of the expansion plate 2'and attached. Further, the woven fabric is cut by the cutter 23 that swings in synchronization with the conveyor nest at the cutting position 18 in the boundary area between the adjacent spreading plates as shown in FIG. The expansion plate 2'is rolled so as to be processed into the cartridge barrel 2.

[Problems to be solved by the invention]

However, as shown in FIG. 4, the woven fabric of the Telempu is densely piled with the piles 11 having equal heights and tied at equal intervals in each texture of the base fabric 15 woven by the warp system 12 and the weft system 13. When such a teremp fabric is cut as described above, the knot at the cut portion is cut and the pile or thread is unraveled and scattered on the teremp surface. When photographic film is packed in a patrone or magazine in such a state, put it in the camera, and if it is pulled out from the patrone or taken up from the patrone for shooting, the pile or lint will adhere to the film screen at the time of shooting. And the image quality is significantly damaged.

Measures such as suction to absorb such pile waste are taken, but they are not sufficient.

An object of the present invention is to provide a patrone for photographic film which solves the above problems.

[Means for solving problems]

The purpose is to cut a velvety narrow woven fabric to a certain size to form a teremp strip and attach the strip as a light-shielding member to a film winding port or a drawing port. The cut end portion is achieved by a photographic film cartridge which has a non-frayed end portion which is cut in the vicinity of the cut end portion after the heating and melting process is performed by the pressing contact of the heater.

〔Example〕

One embodiment of the present invention is shown in FIGS. 1 and 2. However, the present invention is not limited to this. Further, members having the same functions as those of the conventional example are indicated by the same numbers.

FIG. 1 shows that the deployment plates 2'of the cartridge 2 are set on a conveyor nest arranged at equal intervals and are transferred at a constant speed in the direction of the arrow. The width fabrics 8 and 9 are sent in synchronization with the conveyor nest in the same direction and placed on a predetermined position of the expansion plate 2'and pressed to bond the inner surface of the expansion plate and the surface of the base cloth of the telemp material. Then, in the process after the completion of the bonding and in the process before the cutting process, the heater heater 21 as shown in FIG. 1 synchronizes with the conveyor nest and the adjacent boundaries of the expansion plates 2'on the nest are synchronized with each other. The pile surface of the narrow fabric in the area 19 is pressed and contacted for a short time.

In this embodiment, the temperature is 250 ° C., 0.1 second, and the contact width of the heater is 1 mm. Telem narrow fabric material is made of diacetate pile,
The base cloth is made of rayon.

When such a heater is pressed into contact with the telem, the pile surface of the cloth of the telem at the contact portion is a base cloth 15 composed of each pile 11 and weaving threads 12 and 13 of the warp as shown in FIG.
Is crushed into a molten state. Therefore, in this state, if the boundary area is cut by the cutter 23 in the next cutting step, piles and threads from the cut end will not be frayed or scattered at all, and the telempe will be kept clean. In addition, although the telempe bonding device for the cartridge of the present invention is exemplified by a constant speed continuous operation type high speed type, the invention is not limited to this, and an intermittent operation type device is also sufficient.

[Effect of device]

With the patrone of the present invention, the shooting surface of the photographic film is always kept normal, there is no attachment of the pile of the telem and the attachment of fine waste of threads, and it is possible to always obtain a stable finish of good quality photograph. .

[Brief description of drawings]

FIG. 1 is a schematic view of the pastrone according to the present invention in a state where the telempe adhesive is cut. FIG. 2 is a state diagram of cutting the telem according to the present invention. FIG. 3 is a state diagram of the conventional telemp cutting. FIG. 4 is a perspective view of a part of the telempu. FIG. 5 is a perspective view showing the structure of a 135 roll film. FIG. 6 is a schematic view of a conventional telem bonding and cutting device for a cartridge. 2 ... Patrone body 2 '... Deployment plate 7 ... Film 8,9 ... Velvety narrow fabric 8', 9 '... Telem strip 10 ... Winding port or outlet 11 ... Pile 12 …… Warp 13 …… Weft 15 …… Base fabric 18 …… Cutting position 19 …… Border area 21 …… Heater 23 …… Cutter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-63-74869 (JP, A) JP-A-63-85625 (JP, A) JP-A-63-305353 (JP, A) Jitsuhei 3- 26514 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A photographic film cartridge in which a velvety narrow fabric is cut to a predetermined size to form a teremp strip and the strip is attached as a light-shielding member to a film take-up port or a drawing port. The photographic film cartridge is characterized in that the cut end is a non-frayed end that is cut after the vicinity of the cut end is heated and melted by pressing contact with a heater.