JPS62294240A - Light shielding container for housing rolled photosensitive material - Google Patents

Abstract

PURPOSE:To provide a light shielding container of a cartridge type which is provided with excellent light shielding property by a stationary light shielding wall part at an outlet slot and oscillatable and movable light shielding wall part connected at one end of the stationary light shielding wall part. CONSTITUTION:Light shielding members 17, 18 respectively stuck to outlet passage plane parts 11, 14 are fixed in a light press contact state to thoroughly prevent the entry of external light into the container and to permit the easy passage of a photosensitive material R to the outside. The movable light shielding wall 15 which is bent at the bent part 16 of the passage plane part 14 is provided. The light shielding wall 15 is then oscillated upward around the bent part 16 as a node by the pulling out load on an exposing device to maintain the position balancing with the elastic recovering force of the bent part 16 as the residual amt. of the rolled photosensitive material R decreases. The light shielding wall 15 expands in press contact with the photosensitive material until the roll attains the min. diameter; therefore, the entry of the external light from the outlet slot into the light shielding container is prevented and the pulling out load of the photosensitive material is decreased.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Industrial Application Field] The present invention comprises a roll-shaped photosensitive material, such as a photographic film or photographic paper, wound around a core, which is housed inside in a light-shielded state. The present invention relates to a cartridge-type light-shielding container that allows the photosensitive material to be drawn out from an exit slot provided in the container.

[Prior Art] Light-shielding containers for transporting unexposed photographic film, photographic paper, and other photosensitive materials into an exposure device in a bright room are generally used under the names of magazines, cartridges, cartridges, and the like. These light-tight containers are generally made of cardboard, hardboard, plastic, metal, or the like.

The light-shielding container has an exit slot through which the roll-shaped photosensitive material contained therein is pulled out. When the container is placed in the supply of the exposure apparatus, the container
It is shielded from outside light to prevent exposure of the photosensitive material inside the container. However, containers that can be loaded in a so-called "bright room" are equipped with light-shielding means to prevent external light from entering the photosensitive material inside the container even when the container is not placed in an exposure device. Particularly, the exit slot portion needs to facilitate the passage of the photosensitive material and also needs to be completely light-blocking.

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

The telemp prevents light from passing through the exit slot,
It also has a thickness, length, and elasticity such that a photosensitive material can be drawn through it. Generally, both sides of the exit slot with the tape attached are fixed to the container body.

[Problems to be Solved by the Invention] A light-shielding container having an exit slot as described above is not a problem when used as a cartridge for storing a small roll of photographic film, but it cannot be used for storing a wide and long roll of photographic material. In the case of containers that are That is (1)
The pull-out load of wide photosensitive materials is made almost uniform in the width direction.
And keep the load light.

(2) For a long roll of photosensitive material wound around a core, there is a large difference between the initial maximum outer diameter and the outer diameter when there is a small amount remaining near consumption, and the insertion angle from the roll outer diameter to the exit slot is large. Although the amount varies greatly, it is necessary to have an almost constant pull-out load and light shielding properties.

In order to prevent fogging exposure due to external light incident on the exit slot and ensure light-shielding properties, simply extending the length of the photosensitive material in the feeding direction linearly is insufficient for the light incident parallel to the exit slot. It is not possible to obtain light blocking properties. In order to obtain light-shielding properties using this method, the gap between the exit slots must be narrowed and the pressure of the telescope must be strengthened.

This increases the tensile load required to pull out the photosensitive material from the container. Moreover, this may damage or crack the photosensitive surface of the photosensitive material.

As another means for preventing fogging exposure, Utility Model Application No. 55-889
As disclosed in the specification of No. 80, there is a method of maintaining the light blocking property by providing an obstacle in the middle of the exit slit, but in this case, the light blocking property cannot be maintained unless the obstacle is provided sufficiently large. However, this significantly increases the pull-out load, which can cause the photosensitive material to be stretched and torn, the photosensitive material to have poor flatness, and the photosensitive surface to be damaged. ) and wrap this web around the outermost layer at least once to shield it from light, pass the tip of the web through the exit slot and load it directly into the feeding section of the exposure device, then close the lid of the feeding section to shield it from light. There is a leader paper leading method. However, with this method, it is impossible to take out the photosensitive material from the feeding section halfway after the leader paper has been fed out.

[Means for Solving the Problems] The present invention was discovered in view of the above-mentioned actual situation, and has always stable draw-out conveyance, low draw-out load, and complete light-shielding property. Another object of the present invention is to provide a light-shielding container for storing a photosensitive material in which the photosensitive material being used can be taken out and taken out from an exposure device at any time.

A light-shielding container for storing a rolled photosensitive material of the present invention that achieves this object stores a rolled-up photosensitive material inside in a light-shielded state, and has an exit slot that allows the photosensitive material to be pulled out to the outside. A light-shielding container for storing photosensitive materials, characterized in that the exit slot is composed of a fixed light-shielding wall portion and a movable light-shielding wall portion connected to one end of the fixed light-shielding wall portion and swingable. .

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

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

The light-shielding container of the present invention for storing the photosensitive material R is a box-shaped container h consisting of a central container body 10 and end lid members 20 and 30 that shield and close open end surfaces on both sides of the container body 10.
It has become q.

The container main body IO is formed into a rectangular cylinder shape by bending a flat sort of cardboard or plastic or a laminated material thereof, and the inner wall surface thereof is black. The folded ends of the rectangular cylindrical container body substantially meet in opposition to form a long exit slot. That is, the vicinity of the lower bent end is the outlet passage surface portion 11. Inclined surface portion 12.
and a fixed surface portion 13, which is a fixed wall bonded to the inner surface of the cylindrical wall. A light shielding member 17 is attached to the upper surface side of the exit passage surface section 11 and the inclined surface section 12.

The light shielding member 17 is made of an elastic material such as a black fabric such as Rasha, a raised fabric such as velvet, or a flocked black fabric such as Terempu.

On the other hand, the upper part of the container main body near the bent end is composed of an exit passageway surface part 14 and a movable light shielding wall 15 which is integrated with this and is bent at a bending part 16. The upper surface of the outlet passage surface section 14 is closely fixed to a part of the inner wall of the end cover member 20.30.

Further, a light shielding member I8 made of the same material as the light shielding member 17 is attached to a portion of the lower surface and the upper surface of the exit passage surface portion 14 and the movable light shielding wall 15. Here, the exit passage surface section 11
．． The light-shielding members 17 and 18 attached to the containers 14 and 14 are fixed in a light pressure state to completely prevent external light from entering the container, and also to allow the photosensitive material I (to easily pass through to the outside). It has become.

The movable light-shielding wall 15 bends from the bending part 16 to the inclined surface part 1
Since the light shielding member 17I8 is pressed against the 2nd side, the light shielding member 17I8 is maintained in a pressed state, and even if a small amount of light leaks at the exit passage, it is refracted and absorbed by the inclined surface of the movable light shielding wall 15, and the light shielding member 17I8 in close contact with the light shielding member 17. 18, it is impossible for external light to enter the interior.

The end cap members 20.30 then have a symmetrical shape.

The interior of the MNS material 30 will be explained below.

An annular concave groove 31 is formed inside the outer edge,
The edges of the openings at both ends of the container body IO are fitted to prevent outside light from entering the container. Note that 32 is an abutment surface for positioning and fixing the outlet passage surface portion I4.

Furthermore, a circular protrusion 3 is located approximately at the center of the inner side of the end cover member 30.
3 protrudes, and its outer diameter portion fits into the inner diameter portion of the core body 13 of the roll-shaped photosensitive material R to support the end portion of the photosensitive material R.

Next, FIG. 5 is a sectional view showing a state in which the remaining amount of the roll-shaped photosensitive material R supported by the projection 33 in the light-shielding container is reduced. Conventionally, as the photosensitive material is drawn 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, and the photosensitive material is bent at a steep angle to reduce the pull-out load. However, by providing the movable light-shielding wall 15 of the present invention, the movable light-shielding wall 15 swings upward at the bending portion 16 due to the pull-out load on the exposure apparatus side.
A position balanced with the elastic restoring force in the bent portion 16 is maintained. Then, the movable light-shielding wall 15 until the roll reaches its minimum diameter.
is stretched in pressure contact with the photosensitive material.

Note that by making each outer tip of the light shielding member 17.18 protrude outward from the outer tip surface of the exit passage surface section 11.14, it is possible to prevent external light from entering from an oblique direction, thereby increasing the height. Provides light shielding properties.

FIG. 6 is a sectional view showing a state in which the light-shielding container is loaded into a light-shielding magazine. The light-shielding magazine 40 is composed of a lower body 41 and an upper body 42 rotatably joined by a hinge 43. When the upper body 42 is opened, the light-shielding container can be inserted into and removed from the inside of the magazine. When the upper body 42 is closed, the inside of the magazine is in a light-shielded state. In each gravity of the upper body 42 and the lower body 41, outlet passage portions 42A and 41A protrude integrally to form an outlet slot. The outlet slot of the magazine is on an extension of the outlet slot of the light-tight container, and the photosensitive material passes through the Ryokawa Ross slot and is drawn out. Supply the magazine containing the light-shielding container to the exposure equipment!
When the sheet feed roller 50 is mounted on the section E and starts feeding, the paper feeding roller 50, which clamps and presses the photosensitive material, is driven and rotated to convey the photosensitive material to the exposure section.

FIG. 7 is a sectional view showing another embodiment according to the present invention,
FIG. 7(A) shows the initial state of the roll-shaped 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, functional parts similar to those in FIG. 1 are designated by the same reference numerals.

This embodiment has a structure in which the exit slot does not have a light shielding member. In this case as well, the movable light-shielding wall 15 can elastically swing around the bent portion 16, and responds to the winding diameter of the photosensitive material. Such a structure prevents external light from linearly entering the light-tight container through the exit slot, and reduces the pull-out load of the photosensitive material. In other words, in conventional fixed type exit slots, the slot gap is set to 1.5mm to 2.5+n for light shielding.
The slot gap was previously fixed at 4 mm, but by the function of the movable light-shielding wall according to the present invention, it has become possible to widen the slot gap to 4 mm. This makes it possible to maintain light-shielding properties and reduce the load on the photosensitive material when pulled out. According to the experimental example,
The light-shielding property was irradiated at 10.0 OOOL ux for 30 minutes, and no fogging occurred on the photosensitive material inside the container. Also, the pullout load is 1g for 35mm color film with cartridge.
, a g/mm, whereas in the case of the light-shielding container according to the present invention, it was 3.4 g/nm, which was reduced to about 175.

The light-shielding container shown here protects the roll-shaped photosensitive material contained therein from external light, and can also be loaded into an exposure apparatus as it is in room light.

Furthermore, 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 removed from the device, the photosensitive material inside the container will not be fogged.

[Effects of the Invention] As explained above, the light-shielding container according to the present invention has excellent light-shielding properties, and is protected against exposure to external light even when stored alone, when attached to an exposure device, and when removed. No fogging occurs. Further, when the photosensitive material is pulled out from the container and driven and transported to an exposure device, the load resistance is extremely small, and a stable transport force can be maintained. At this time, frostbite or deformation of the photosensitive material does not occur. Furthermore, the present light-shielding container has the advantage that it has a simple structure, has a small number of parts, and can be manufactured at a low cost.

[Brief explanation of the drawing]

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 roll-shaped photosensitive material. Fig. 4 is an exploded perspective view of a light-shielding container containing a roll of 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. It is. FIG. 7 is a partial sectional view showing another embodiment of the light-shielding container according to the present invention. IO... Container body II, 14... Outlet passage surface section 12... Inclined surface section 13... Fixed surface section 15
...Movable light-shielding wall I6...Bending portion 17.18
...shading member

Claims (1)

[Claims] In a light-shielding container for storing a rolled photosensitive material, the light-shielding container has an exit slot for storing a rolled-up photosensitive material inside in a light-shielding state and allowing the photosensitive material to be pulled out to the outside, wherein the exit slot is a fixed light-shielding wall portion. A light-shielding container for storing a rolled photosensitive material, comprising: a movable light-shielding wall portion connected to one end of the fixed light-shielding wall portion and swingable.