JPH0239044A - Magazine for photographic film - Google Patents

Abstract

PURPOSE:To allow easy light shielding of a slip part even if the outside shape of a magazine body is intricate by disposing a light shielding member to the leader part of a film and press-fitting the light shielding member into the inner side of the lip part on the magazine side. CONSTITUTION:The light shielding member 30 is press-fitted to a part of the leader part 21 of the film 20 on the inner side of the lip part 10 of the magazine formed with a stopper, step, taper, etc., by which the inside of the magazine is maintained in a light shielding state. The light shielding member 30 is drawn out of the inner side of the lip part 20 and is taken up on a take-up shaft according to the rotation of the take-up shaft simply by setting the magazine to a camera and fixing the front end of the leader part 21 to the film take-up shaft of the camera at the time of photographing. The front end of the leader part 21 is detached from the take-up shaft of the camera and the light shielding member 30 is press-fitted to the inner side of the lip part 20 when the rewinding operation of the film 20 is carried out upon completion of photographing. The light shielding member is then stopped at the specified depth and the inside of the magazine is again put into the light shielding state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a container for storing a photographic material in a light-shielded state and loading it into a camera.

Generally, there are various types called magazines, cartridges, cartridges, etc., but in this specification, unless otherwise specified, the term magazine will be used as a general term. The present invention relates to a magazine for photographic film having an improved light-shielding structure at the lip.

[Prior Art] A film commonly known as one-ten roll film is housed in a synthetic resin container generally called a cartridge, and a slit is provided at the film outlet (hereinafter referred to as lip portion). By running a film inside this slit, the inside is shielded from light.

On the other hand, in the case of 35-inch roll film, it is generally stored in a so-called single magazine type metal container (generally called a patrone) that consists only of the original roll. In this cartridge, a velvet-like cloth material (teremp) is attached to the inside of the lip part to shield the inside of the container from light.

[Problem B to be solved by the invention] In recent years, cameras using 35-layer roll film have been equipped with features such as autofocus, automatic frame advance, continuous high-speed shooting, and automatic rewind, as seen in so-called compact cameras and single-lens reflex cameras. Products with high-class functions such as , etc. are becoming widespread.

However, when looking at the film used in such cameras, despite dramatic advances in photographic performance, the traditional type, which is housed in a metal cartridge, is still widely used. Many people still cannot load 35mm roll film into their cameras because it is not convenient to use.

Therefore, in order to further popularize cameras, the conventional cartridge was changed to something like a one-ten roll film cartridge. It is necessary to make it easier for anyone to set film by improving the cartridge to make it easier to set film.

In order to make this a reality, there are of course issues related to peripheral technologies such as changes to the camera mechanism and consideration for application to automatic processing, but there are also issues such as production technology, performance, functionality, etc. There are many problems to be solved.

For the improved version, considering mechanical constraints, production technology, cost, etc., it seems essential to use synthetic resin material, which can be mass-produced at low cost in complex shapes. It is necessary to use a simple method.

Not only is the assembly process complicated, but when the film is loaded and unloaded at high speed, the fibers of the telemp may fall off or static electricity may be generated due to contact with the film. This is not desirable because it may adversely affect the image.

Furthermore, in most conventional cartridges that receive DPE requests, the photographed film is pulled into the cartridge, making the work of taking out the film prior to development processing extremely complicated.

In view of the above, the main purpose of the present invention is to clarify a synthetic resin magazine with an improved light-shielding structure of the lip portion.Other objects and benefits of the present invention are as described below and attached. It will be clear from the drawings.

[Means for Solving the Problems] The magazine for photographic film of the present invention that achieves the above object has a light shielding member disposed at least in a part of the leader portion of the film, and the light shielding member is placed inside the lip portion on the side of the magazine. It is characterized by being press-fitted to block light inside the magazine.

[Function] The leader portion 2 of the film 20 is placed inside the lip portion 10 of the magazine where a stopper, step, taper, etc. are formed.
By press-fitting the light-shielding member 30 into a part of the magazine 1, the inside of the magazine is maintained in a completely light-shielded state.

When taking pictures, simply set the magazine in the camera and fix the tip of the leader section 21 to the film winding shaft of the camera.The light shielding member 30 is pulled out from inside the lip section 10 as the winding shaft rotates, and the film is taken up. It is wound up on the shaft.

When shooting is completed and the film 20 is returned, the tip of the leader section 21 is detached from the winding shaft of the camera, and the light shielding member 30 is pressed into the inside of the pump section 10 to form a film at a certain depth. The camera will stop at this point, and the inside of the magazine will become light-blocked again.

[Example] Next, embodiments of the present invention will be described in detail with reference to the drawings.

Figure m1 shows a cross-sectional view of one embodiment of the present invention.
Reference numeral 10 denotes a lip portion of the magazine, and a light shielding structure described below is provided inside the lip portion.

At least a portion of the leader portion 21 of the film 20 includes:
A light shielding member 30 is attached.

In the illustrated embodiment, the light shielding member 30 is attached to the front and back sides of the film 20, but it may be attached only to either the front or back side.

On the inside of the lip portion lO into which the light shielding member 30 is press-fitted, a stopper with a protrusion as shown in the figure is provided, or a step is provided, or a tapered opening that widens toward the exit direction is provided so that the light shielding member 30 has a certain shape. Configure it so that it does not penetrate beyond the depth.

The material forming the light shielding member 30 is preferably an elastic material with a certain thickness, such as a sponge-like sheet.Although a material pasted with cloth or a material coated with resin may also be used. good.

In the embodiment shown in FIG. 2, the leader portion 21 is folded back to form a light shielding member 30. This embodiment also includes an embodiment in which a piece of film is attached to the leader portion 21.

Although not shown, in an embodiment in which the end of the lip part 10 and the light shielding member 30 and/or the leader part 21 are fixed with a vcm tape or the like, the light shielding property can be further improved. Since the film cannot be pulled out unless the adhesive tape is removed, it is possible to easily distinguish between unused film and photographed film, and double photographing, etc., is effectively prevented.

In addition, the synthetic resin materials for manufacturing the magazine of the present invention include:
It may be non-conductive.

[Effects of the Invention] With the light-shielding structure of the present invention, even if the external shape of the magazine body is complex, it is possible to easily shield the dust/burr area from light, and prevent the fibers from falling off as in the conventional telescope. Therefore, the generation of static electricity can be suppressed as much as possible.

Also, when rewinding the film after shooting.

Unlike in the case of conventional cartridges, the leader section is not caught up in the cartridge, which makes it extremely easy to take out the film prior to development.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views showing embodiments of the present invention. In the figure, each symbol indicates the following. 10: Lip part 20/Film 21: Leader part 3 discharge light shielding member Patent applicant Nobuaki Sakaguchi, representative of Konica Co., Ltd., patent attorney

Claims (1)

[Claims] 1. A photograph characterized in that a light-shielding member is disposed on at least a portion of the leader portion of the film, and the light-shielding member is press-fitted inside the lip portion on the magazine side to shield the inside of the magazine from light. Film magazine. 2. The photographic film magazine according to claim 1, wherein the light shielding member is formed by folding back a part of the leader portion.