JPH0652404B2 - Light-shielding container for storing roll-shaped photosensitive material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention stores a roll-shaped photosensitive material such as a photographic film or photographic paper wound around a core in a light-shielding state, and stores the photosensitive material in a container. The present invention relates to a patrone type light-shielding container that can be pulled out from an exit slot provided.

[Prior Art] A light-shielding container for feeding a light-sensitive material such as unexposed photographic film or photographic paper into an exposure device in a bright room is generally used under the names such as magazine, cartridge, and cartridge. These light-shielding containers are generally made of cardboard, hardboard, plastic, metal or the like.

The light-shielding container has an outlet slot through which the contained roll-shaped photosensitive material can be passed when it is pulled out to the outside. When the container is placed in the supply of the exposure apparatus, the container
In order to prevent the light-sensitive material in the container from being exposed, it is shielded from external light. However, a so-called "bright room loadable" container is provided with a light-shielding means that prevents external light from entering the photosensitive material inside the container even when the container is not placed in an exposure apparatus. In particular, the portion of the exit slot is required to facilitate the passage of the light-sensitive material and to be completely light-shielding.

A common means of preventing external light from entering through the exit slot is to attach a black fabric, such as a teremp, to one or both sides of the exit slot.

The telemprevents light from passing through the exit slot,
And it has the thickness, length and elasticity so that the photosensitive material can be drawn through it. In general, both sides of the exit slot, which are attached with the telem, are fixed to the container body.

[Problems to be Solved by the Invention] The light-shielding container having the exit slot as described above does not cause a problem in the case of a cartridge that accommodates a small roll photographic film, but accommodates a wide and long roll-shaped photosensitive material. In the case of a container that does, various measures are required. That is, (1) the pull-out load of the wide width photosensitive material is made substantially uniform and light in the width direction. (2) The long roll-shaped photosensitive material wound around the core has a large difference between the initial maximum outer diameter and the outer diameter when the remaining amount is small and the remaining amount is low, and the insertion angle from the roll outer diameter to the exit slot is large. Changes greatly, but it is always necessary to have a substantially constant withdrawal load and light blocking effect.

In order to prevent fog exposure due to the incidence of external light on the exit slot and to ensure the light blocking effect, it is sufficient to linearly extend the length in the feeding direction of the photosensitive material for the light entering parallel to the exit slot. It is not possible to obtain a light blocking effect. In order to obtain a light shielding property by this method, it is necessary to narrow the gap between the outlet slots and strengthen the pressure contact of the telem. This increases the tensile load required to pull out the photosensitive material from the container. Therefore, the photosensitive surface of the photosensitive material is damaged or cracked.

As another means for preventing fog exposure, a full-fledged Japanese Utility Model Publication No. 55-889
As disclosed in Japanese Patent No. 80, there is a method of maintaining the light-shielding property by providing an obstacle in the middle of the exit slit, but in this case, the light-shielding property cannot be maintained unless the obstacle is provided sufficiently large. However, this causes a significant increase in the withdrawal load, resulting in defects that the photosensitive material is stretched and torn, the photosensitive material becomes defective in plane, and the photosensitive surface is damaged.

As yet another means, a web (leader paper) having a light-shielding property is attached to the tip of the outermost layer of an unused roll-shaped photosensitive material, and the web is wrapped around the outermost layer at least once to shield the light, and the tip of the web is cut off. There is a leader paper leading system in which the sheet is passed through the exit slot and directly loaded into the feeding section of the exposure apparatus, and then the lid of the feeding section is closed to shield light. However, according to this method, it is impossible to take out the photosensitive material from the feeding section halfway after the leader paper has been taken out.

[Means for Solving the Problems] The present invention has been discovered in view of the above-mentioned actual circumstances, and has always stable drawer transportability, a low drawer load, and complete light shielding properties, Moreover, it is an object of the present invention to provide a light-shielding container for storing a photosensitive material, which allows the photosensitive material in use to be taken in and out of the exposure device at any time.

A light-shielding container for accommodating a roll-shaped photosensitive material of the present invention which achieves this object is a pair of opposed fixed members which accommodate a rolled-up photosensitive material in a light-shielding state inside and allow the photosensitive material to be pulled out to the outside. An exit slot composed of a light shielding wall and a movable material which is located on the side where the photosensitive material is introduced into the exit slot and on which a stress against the drawing tension of the photosensitive material is exerted and which has a fulcrum outside the exit slot. It is characterized in that it is composed of a light shielding wall.

[Embodiment] An embodiment of the light-shielding container for storing the rolled photosensitive material of the present invention is shown in FIGS. 1 to 4. 1 is a central sectional view of a light-shielding container, FIG. 2 is a perspective view of the light-shielding container, FIG. 3 is a perspective view of a roll-shaped photosensitive material housed in the light-shielding container, and FIG. 4 is a roll-shaped photosensitive material. It is an exploded perspective view of the light-shielding container stored.

The roll-shaped photosensitive material R shown in FIG. 3 is a photosensitive photographic photosensitive material such as a photographic film, a photographic paper, a transmissive photosensitive film (OHP film), etc., and is composed of a support layer and a photosensitive layer. The photosensitive material R is formed in a scroll shape around a core body (core) B, and is wound so that the photosensitive layer faces outward.

The light-shielding container of the present invention for accommodating the light-sensitive material R has a box-shaped structure composed of a central container body 10 and end cover members 20 and 30 for closing the open end faces on both sides of the container body 10 to shield the light. I am doing it.

The container body 10 is formed by bending a flat cardboard or a plastic sheet or a laminated material of these into a rectangular tube shape, and its inner wall surface is black. The vicinity of the folded ends of the rectangular tubular container body are generally opposed and aligned to form a long exit slot. That is, in the vicinity of the lower bent end, the outlet passage surface portion 11, the inclined surface portion 12,
And a fixed surface portion 13, which is a fixed wall adhered to the inner surface of the tubular wall body. A light shielding member 17 is attached to the upper surfaces of the outlet passage surface portion 11 and the inclined surface portion 12. Shading member 1
A material having elasticity such as black fabric such as Racha, woven fabric such as velvet, or flocked black fabric such as teremp is used for 7.

On the other hand, in the vicinity of the bent end above the container body, an outlet passage surface portion 14 and a movable light shielding wall 15 having a bent portion 16 integral with or connected to the outlet passage surface portion 14 are formed. The upper surface of the outlet passage surface portion 14 is in close contact with and fixed to a part of the inner wall of the end surface lid member 20, 30.

A light blocking member 18 made of the same material as the light blocking member 17 is attached to a part of the lower surface and the upper surface of the outlet passage surface portion 14 and the movable light blocking wall 15. Here the exit passage surface part 1
The light-shielding members 17 and 18 attached respectively to 1 and 14 are fixed in a light pressure contact state to completely prevent external light from entering the container and to allow the photosensitive material R to easily pass to the outside. It has become.

The movable light-shielding wall 15 is bent from the bent portion 16 and inclined surface portion 1
Since it is located on the second side, the light blocking members 17 and 18 are kept in a bent state, and even if a small amount of light leaks in the outlet passage,
External light cannot enter the inside due to the light shielding members 17 and 18 that are refracted and absorbed by the inclined surface of the movable light shielding wall 15 and are in close contact with each other.

Next, the end cover members 20 and 30 have a symmetrical shape.
The inside of the lid member 30 will be described below as a representative.

An annular concave groove 31 is formed inside the outer edge portion,
The edges of the openings at both ends of the container body 10 are fitted to prevent outside light from entering the container. In this case, the outer and inner surfaces may have a uniform height with respect to the groove 31, or all or part of the inner surface may be inclined more inwardly and protrude. Reference numeral 32 is an abutting surface for positioning and fixing the outlet passage surface portion 14.

In addition, a circular protrusion 3 is provided at the substantially center inside the end cover member 30.
3 protrudes, and its outer diameter portion fits into the inner diameter portion of the core body B of the roll-shaped photosensitive material R, and supports the end portion of the photosensitive material R.

Next, FIG. 5 is a cross-sectional view showing a state in which the remaining amount of the roll-shaped photosensitive material R supported by the protrusions 33 in the light-shielding container has decreased. As the photosensitive material is pulled out to an external exposure device and the outer diameter of the roll becomes smaller, the bending angle of the photosensitive material at the tip of the movable light-shielding wall 15 becomes smaller in the past, and the photosensitive material is bent at a steeper angle to pull out the load. Although a problem such as increase has occurred, by providing the movable light-shielding wall 15 of the present invention, the movable light-shielding wall 15 swings upward with the bent portion 16 as a node by the pulling load on the exposure apparatus side,
A position that balances the elastic restoring force in the bent portion 16 is held. The movable light-shielding wall 15 until the roll reaches the minimum diameter
Is pressed against the photosensitive material and stretched.

It is possible to prevent external light from entering from an oblique direction by making the outer ends of the light shielding members 17 and 18 project outward from the outer end surfaces of the outlet passage surface portions 11 and 14, which is higher. A light shielding property is obtained.

FIG. 6 is a sectional view showing a state in which the above-mentioned light-shielding container is loaded in a light-shielding magazine as needed. The light-shielding magazine 40 is composed of a lower body 41 and an upper body 42 rotatably hinged by a hinge 43. When the upper body 42 is opened, the light-shielding container can be attached to and detached from the magazine. When the upper body 42 is closed, the inside of the magazine is in a light-shielded state. Upper body 4
2 and the front of each of the lower body 41, the outlet passage portions 42A, 4
1A projects together to form an exit slot. The outlet slot of the magazine is on an extension of the outlet slot of the light-tight container, and the photosensitive material is drawn out through both outlet slots. When the magazine containing the light-shielding container is attached to the paper feeding unit of the exposure apparatus and the feeding is started, the paper feeding roller 50 that holds and presses the photosensitive material is driven to rotate and conveys the photosensitive material to the exposure unit. .

FIG. 7 is a sectional view showing another embodiment according to the present invention,
FIG. 7 (A) shows the initial state of use of the rolled photosensitive material R, and FIG. 7 (B) shows the state where the remaining amount of the photosensitive material R is very small. Regarding the reference numerals used in these drawings, the same functional portions as those in FIG. 1 are designated by the same reference numerals.

In this embodiment, the outlet slot has no light blocking member. Even in this case, the movable light shielding wall 15 can be elastically swung with the bent portion 16 as a node, and responds to the winding diameter of the photosensitive material. With such a structure, it is possible to prevent outside light from linearly entering the light-shielding container from the exit slot, and reduce the drawing load of the photosensitive material. That is, in the conventional fixed-type outlet slot, the slot gap is fixed to 1.5 mm to 2.5 mm for light shielding, but it is possible to widen the slot gap to 4 mm by the action of the movable light shielding wall according to the present invention. This makes it possible to maintain the light-shielding property and reduce the drawing load of the photosensitive material. According to the experimental example, the light blocking property is 10,000 Lu
No fogging occurred on the light-sensitive material in the container upon irradiation for 30 minutes. Further, the pull-out load was 3.4 g / mm in the case of the light-shielding container according to the present invention, and could be reduced to about 1/2 of 6.1 g / mm in the case where it was not carried out.

The light-shielding container shown here protects the roll-shaped photosensitive material contained therein by exposing it to external light, and can also be loaded as it is into an exposure apparatus in room light. Further, even when the device is repaired or replaced with a different photosensitive material, even if the light-shielding container containing the photosensitive material in use is taken out of the device, the photosensitive material in the container is not fogged.

[Effects of the Invention] As described above, the light-shielding container according to the present invention is excellent in light-shielding property, and is protected from external light when it is stored alone or when it is attached to or removed from the exposure apparatus. It never happens. Further, the load resistance when the photosensitive material is pulled out from the container and driven and conveyed to the exposure apparatus is extremely small, and a stable conveying force can be maintained. At this time, the photosensitive material is not scratched or deformed. Further, the light-shielding container has an advantage that it has a simple structure, has a small number of parts, and can be manufactured at a low price.

[Brief description of drawings]

FIG. 1 is a central sectional view of a light-shielding container according to the present invention, FIG. 2 is a perspective view of the light-shielding container, and FIG. 3 is a perspective view of a rolled photosensitive material. FIG. 4 is an exploded perspective view of a light-shielding container containing a rolled photosensitive material, FIG. 5 is a central sectional view of the light-shielding container in use, and FIG. 6 is a sectional view of the light-shielding container housed in a magazine. Is. FIG. 7 is a partial cross-sectional view showing another embodiment of the light-shielding container according to the present invention. 10 ... Container body, 11, 14 ... Exit passage surface portion 12 ... Inclined surface portion, 13 ... Fixed surface portion 15 ... Movable light-shielding wall, 16 ... Bent portion 17, 18 ... Light-shielding member 20, 30 ... End Part cover member, 31 ... annular groove 32, butting surface, 40, magazine, B, core, R, roll-shaped photosensitive material

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Naoto Naraoka 28 Horinouchi, Odawara-shi, Kanagawa Rokusha Konishi Makoto Industrial Co., Ltd. Toshiyasu Kimura (56) Reference JP-A-63-124050 (JP, A) Open 51-134125 (JP, A) Open 55-88980 (JP, U) Open 61-49353 (JP, U) Open 49-82723 (JP, U)

Claims (1)

[Claims] 1. An exit slot comprising a pair of opposed fixed light-shielding walls for accommodating a light-sensitive material wound in a roll in a light-shielding state and allowing the light-sensitive material to be drawn out, and a light-sensitive material. A roll-shaped photosensitive member having a movable light-shielding wall which is introduced into the exit slot, is positioned on a side where a stress against a drawing tension of the photosensitive material is exerted, and has a fulcrum outside the exit slot and which is swingable. Light-shielding container for material storage.