JPH0239043A - Magazine for photographic film - Google Patents

Abstract

PURPOSE:To decrease friction resistance and to prevent the adverse influence of static electricity by applying a lubricating agent on the inside wall part with which a film comes into contact. CONSTITUTION:The front surface of a magazine body 10 formed of a synthetic resin material is shielded by a cap 11. The film F wound on a shaft 20 is loaded into a container and the inside of the container is subjected to light shielding by the cooperation of a collar 21 of the shaft 20 and the cap 11 at the time of mounting the cap 11. The lubricating agent is applied on the inside wall surface of a magazine body 20 and both the surfaces of a passage member 15 to decrease the friction resistance. Various lubricating agents which do not exert the adverse influence on the photographic emulsion of the film F may be utilized as the lubricating agent which can be utilized; silicone oil is used as an example. The adverse influence of the static electricity is effectively prevented in this way even if the film is run (rotated) at a high speed within the magazine.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a container for storing photographic light-sensitive material in a light-shielded state and loading it into a camera (these containers generally include magazines, cartridges, cartridges, etc.). In this specification, unless otherwise specified, the term magazine will be used to refer to all types of magazines.More specifically, in magazines made of synthetic resin, film This invention relates to an improved magazine for photographic film that reduces contact friction with the camera.

[Prior art] The film commonly known as Funten roll film is
It is generally housed in a double magazine type synthetic resin customer base called a cartridge.

On the other hand, 3510-Le Film is housed in a metal cassette with a single magazine system for only the original roll.

In conventional magazines, 2. A so-called terremp is pasted on the film outlet to shield the container from light, and an antistatic agent is applied to prevent static electricity from being generated by contact with the film. There is.

[Problem to be solved by the invention] In recent years, cameras using 3510-LeFilm have been equipped with high-end features such as autofocus, automatic frame advance, high-speed continuous shooting, and automatic rewind, as seen in so-called compact cameras and single-lens reflex cameras. Functional items are becoming widespread.

However, when looking at the film used in such cameras,
Despite dramatic advances in photographic performance,
The current situation is that the old type, which is housed in a metal cartridge, is still widely used, and compared to the so-called "Funten Roll" cartridge, the operation of setting it in the camera is complicated and it is very difficult to use. ,
Many people still cannot load film.

In order to improve usability, it is necessary to design a magazine with a one-ten film cut rig or with an improved shape. It seems inevitable to use synthetic resin material due to the requirements, but in cameras with high-speed continuous shooting and automatic rewind mechanisms, the film may run (rotate) at high speed in the magazine, so it is difficult to use a metal cartridge. Contact friction, which was not a problem in some cases, becomes a problem.

Synthetic resins are generally non-conductive, so if the contact friction is large, there is a risk that static electricity will be generated, and the load required for high-speed running (rotation) within the magazine will be large, causing the built-in battery to wear out quickly. There is a problem with this.

In addition, conventional light shielding with so-called telemp pasted on the film outlet (lip part)! If an I structure is adopted, when the film is run (rotated) at high speed, not only will the fallen fibers adhere to the film and adversely affect the image, but also the so-called telemp will be charged with electricity. Even when an inhibitor is applied, static electricity may be generated when the film is running at high speeds.

In view of the above, the present invention discloses a magazine for photographic film in which the magazine is made of a synthetic resin material and has a light-shielding structure formed by a narrow curved film path at the film take-out portion, which reduces contact frictional resistance. Other objects and advantages of the present invention will become apparent from the following description.

[Means for Solving the Problems] The photographic film magazine of the present invention that achieves the above object has a main body made of a synthetic resin material, and a light-shielding structure formed by a narrow curved film passage in the film take-out part. This magazine for photographic film is characterized in that a lubricant such as silicone oil is applied to the inner wall portion in contact with the film.

[Function] Even if the main body is made of a synthetic resin material and the film take-out portion is formed with a light-shielding structure by a narrow curved film path, at least the surface that comes into contact with the film should be lubricated with silicone oil or the like. Since the agent is applied, the frictional resistance of contact with the film is reduced. Even when the follower film is running (rotating) at high speed inside the magazine.

In addition to effectively preventing the negative effects of static electricity, power consumption is also reduced.

[Example] Next, an example of a magazine for photographic film to which the present invention is applied will be described in detail with reference to the accompanying drawings.

In FIG. 1, 10 is a magazine main body, and 11 is a lid member. The magazine body 10 has a cross-sectional shape shown in FIG. 2, and a bearing portion 12 is formed at the bottom. Reference numeral 13 denotes a film passage, which includes a passage member 15 extending from the lip portion 14 toward the inside of the container, and a magazine main body I.
It is formed by the inner wall surface of O.

The passage member 15 is curved along the curve of the inner wall surface of the magazine body 1o.

The length and height of the film path I3 are related to light shielding performance and need to be adjusted according to the base thickness of the six films F to be stored. If the height of the film path 13 is insufficient, the contact friction with the traveling film F will increase. Therefore, in order to allow the film F to travel slowly and maintain light-shielding properties, the film path 13 must be sufficiently high and long.

For example, it is also a preferable embodiment to set it to more than half of the inner circumference of the container.

Further, it is also preferable that the passage members 15 are arrayed in the direction of the magazine wall surface.

A lubricant is applied to both sides of the inner wall surface of the magazine body 1O and the passage member 15 to reduce frictional resistance. Various lubricants can be used as long as they do not adversely affect the photographic emulsion of the film, with silicone oil being preferred.

It is also preferable to mirror-finish the inner wall surface of the magazine 10, process it with Teflon, or form a gold film by vapor deposition or the like, and then apply a lubricant thereon.

The upper surface of the magazine body IO is shielded by ill.

When attaching the lid 11, as shown in FIG.
A film F wrapped around the shaft 20 is loaded into the container, and the inside of the container is shielded from light by the cooperation of the collar 21 of the shaft 20 and the lid 11.

On the lower surface of the magazine body 10, unevenness is formed in a shape that follows the cross-sectional shape of the magazine body IO shown in FIG.

In order to prevent the lid 11 from falling off, it is preferable to attach it weakly to facilitate the removal operation of the film F, or to affix an adhesive tape or the like to the outer peripheral surface.

Although the embodiment of the present invention has been described above using the 3510-Le Film cartridge as an example, the present invention can be applied to all other magazines such as one-ten roll film cartridges.

[Effects of the Invention] By using the magazine of the present invention, when the film is run (rotated) at high speed in a synthetic resin magazine by high-speed continuous shooting or automatic film winding mechanism, Even if there is, the frictional resistance with the film is reduced, which is effective in preventing the adverse effects of static electricity and reducing power consumption.

Furthermore, since the magazine of the present invention does not use so-called telemp at the film ejection opening (lip part) to block light, it not only helps to reduce manufacturing costs by reducing the number of parts and making assembly work easier. There is also the advantage that it is possible to effectively prevent the adverse effects on the 1iUi image due to shedding of the fibers constituting the so-called telemp.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the magazine of the present invention, FIG. 2 is a cross-sectional view, and FIG. 3 is a vertical cross-sectional view. In the figure, each symbol indicates the following. F: Film IO = Cartridge 1] Two lids 12: Bearing portion 13: Film passage 14: Lip portion 15: Passage member 20: Shaft 21: Flange Patent applicant Konica Co., Ltd. Representative Patent attorney Nobuaki Sakaguchi

Claims (1)

[Claims] 1. In a photographic film magazine whose main body is made of a synthetic resin material and whose film take-out part has a light-shielding structure with a narrow curved film path, a lubricant is applied to the inner wall part that comes into contact with the film. A magazine for photographic film characterized by being coated with. 2. The magazine for photographic film according to claim 1, wherein the lubricant is silicone oil.