JPH0820703B2 - Magazine for photosensitive materials - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention stores a rolled photosensitive material, and pulls the photosensitive material out of a slit-shaped outlet in its original shape, and prints it in a printer under a bright room. And a magazine for a photosensitive material that can be loaded into

[Technical Background of the Invention and Prior Art] In a phototypesetting device or the like, a photosensitive material wound in a roll is used. Conventionally, this photosensitive material is sold in a state of being wrapped in a light-shielding wrapping paper, and when used, it is once used by refilling it with a metal magazine having a slit for drawing the photosensitive material. However, in consideration of easiness of operation at the time of use, recently, a simple magazine (so-called disposable magazine) made of cardboard, cardboard or plastic has been used. In other words, in recent years, a method has been used in which a photosensitive material is sold in a simple magazine, the user uses it without refilling it, and when the photosensitive material is used up, the simple magazine is discarded. There is. Therefore, it is desirable that the disposable magazine can be provided at a low cost, and thus it is desirable that the disposable magazine be simple and easy to construct and manufacture.

As such a disposable magazine, various types of disposable magazines have been developed and proposed so far.
A device having a configuration shown as a perspective view in the drawing is generally used.

The magazine 40 shown in FIG. 4 comprises a tubular body 41 formed by bending a sheet-like material, and side plates 42a and 42b fitted on both sides of the tubular body 41. Both ends of the sheet-shaped material have a folded portion 43 at an end portion forming the upper surface portion 44 and a folded portion 45 at an end portion forming the front wall portion 46,
A slit 47 is formed between the two folded portions. A cushioning cloth or the like is generally put inside the slit for the purpose of blocking light and preventing scratches on the photosensitive material.

Folded back part of the body of a general simple magazine with the above configuration
The method of forming 43 is to attach a linear ridge pushing line along the width direction to the corresponding portion of the upper surface portion 44, fold the end portion inside the body along the ridge pushing line, and the end portion is usually A method of adhering to the back surface side of the upper surface portion 44 via an adhesive is adopted. Therefore, the folded portion 43 is in close contact with the back surface side of the upper surface portion, there is relatively no space between the upper surface portion and the folded portion, and the overall thickness of both portions is thin. .

By the way, the disposable simple magazine as described above is advantageous in that the work of refilling the photosensitive material in a dark room is not necessary, but there are various problems caused by using a deformable material such as cardboard or cardboard. is there. Among them, a particularly big problem is that during assembly of the magazine, a gap tends to appear near the center of the slit due to the rigidity of the material forming the body, and external factors (buffer, The temperature and humidity) may cause the slit to expand.

If such deformation occurs continuously or repeatedly for a long period of time, the slit will not be restored to its original shape, and the slit will be used in a state where the central gap is large. Since the light-shielding property of the magazine in such a state becomes insufficient, the photosensitive material housed inside may be exposed before being used and may become unusable. In particular, the deformation of the slit as described above becomes remarkable when a wide photosensitive material is used.

[Object of the Invention] It is an object of the present invention to provide a magazine for a photosensitive material, which is capable of stabilizing the shape of the slit and having a higher light-shielding property.

Another object of the present invention is to provide a photosensitive material magazine which is easy to manufacture and can be manufactured at low cost.

SUMMARY OF THE INVENTION The present invention provides a flat plate-shaped material having folded portions at both ends, a region close to one end being an upper face portion, and a region close to the other end being the wall portion, and those end portions A magazine for a photosensitive material, comprising a tubular body portion folded so that a slit is formed between the tubular body portion and side plates covering both side portions of the tubular body portion, the upper surface portion and its folded portion. A magazine for a photosensitive material is characterized in that the cured product of a curable resin material filled in a void portion formed between and is restrained from flexural deformation of an upper folded portion.

DETAILED DESCRIPTION OF THE INVENTION In the photosensitive material magazine of the present invention, a cured product of a curable resin material filled in a void portion formed between the upper surface portion and the folded portion is formed. Therefore, when producing the magazine of the present invention, it is preferable that a space between the upper surface portion and the folded-back portion has a space in which the resin material can be filled.

A preferred embodiment of the photosensitive material magazine of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.

FIG. 1 is a perspective view showing a magazine in which a folded-back portion at an end portion of an upper surface portion has a forehead portion having a surface substantially parallel to the front wall portion on the front surface. That is, by providing the forehead portion, it is possible to secure a space in which the resin material can be filled. The figure is shown with one side plate removed in order to make the internal structure easier to understand. Further, in the magazine of the present invention, the general configuration other than the portion relating to the present invention is the same as the conventional configuration described above, and this will be briefly described below.

The magazine 10 shown in FIG. 1 has a tubular body 11 formed by folding a sheet having folded portions at both ends, and the tubular body 11
And side plates 12a and 12b that cover both ends of the plate. One of the folded-back portions 13 (forming the forehead portion 21) provided with a layer made of the resin cured product according to the present invention is the tubular body portion 11.
At the end of the upper surface portion 14 of the seat, and the other folded portion 15 is the front wall portion of the seat that constitutes the tubular body portion 11.
Each of the 16 end portions is provided inside the tubular body portion 11 in a bent state. The slit 17 is formed by the both ends.

Side plates 12a and 12b are fitted on both sides of the tubular body portion 11, respectively. A hub hole 20 into which a paper core 19 of a sheet-shaped photosensitive material 18 rolled into a roll can be locked is provided in the center of the side plate. With this configuration, the photosensitive material 18 is in a state in which it can be easily rotated in the tubular body portion, and the photosensitive material can be appropriately pulled out through the slit.

The structure of the folded-back portion at the end of the upper surface, which is a characteristic structure of the present invention, is shown in FIGS. 2 and 2-A.

FIG. 2 has a forehead portion 21 on the front surface of the folded portion 13 at the end of the upper surface portion 14 so as to be a surface substantially parallel to the front wall portion 16,
FIG. 7 is a diagram showing a state in which a cured product 22 of a curable resin material filled in a void portion formed between the upper surface portion and its folded portion is provided.

Further, FIG. 2-A is a sectional view taken along the line II of FIG.

As shown in the figure, the forehead portion 21 has a surface substantially parallel to the front wall portion 16 such that each of the upper end portion 21a and the lower end portion 21b has an arc shape that bulges outward at the center. Has been formed. The forehead portion is not limited to the above shape, and the void portion formed between the upper surface portion and its folded portion is filled with the resin material as described above, thereby forming a layered one. It suffices if it is formed in a shape having a space as much as possible. Therefore, its shape can be arbitrarily selected.

Next, the resin material forming the cured product 22 of the curable resin material will be described.

The resin material that can be used in the present invention is not particularly limited as long as it is a curable adhesive that does not have a so-called photographic effect that exerts some adverse effects (for example, photosensitization) on the photosensitive material. Examples of curable adhesives include thermosetting adhesives (eg, amino resins, polyester resins, polyurethane resins, etc.), thermoplastic adhesives (eg, polyvinyl acetate resins, vinyl acetate / vinyl chloride copolymers, Acrylic resin, polyamide resin, etc., hot melt adhesive (generally, multi-component adhesive containing thermoplastic adhesive as a main component;
Examples thereof include ethylene / vinyl acetate copolymer (EVA), polyethylene, atactic polypropylene (APP), ethylene / ethyl acrylate copolymer (EEA), polyamide, polyester, etc.). In the present invention, a hot melt adhesive is particularly preferable in terms of workability. The curable adhesive as described above is applied in an appropriate amount between the upper surface portion and the folded-back portion by using a usual application means such as a nozzle type applicator. And if necessary, appropriate treatment (heat treatment, etc.)
Is done and it becomes a cured product.

The folded-back portion 15 provided at the end of the front wall portion 16 is formed to have a substantially triangular cross section as shown in the drawing. In addition, this shape is not particularly limited. For example, the folded surface forming the slit may be substantially horizontal, or as described in Japanese Utility Model Laid-Open No. 61-67128, it may be inclined at a constant angle toward the inside of the tubular body. Good.

Next, the process of assembling the cylindrical body of the magazine of the present invention will be described with reference to FIG.

3 (A) to (C), a sheet of cardboard or the like is bent to form a forehead portion of the upper end portion including the tubular body portion of the magazine, and the forehead portion is further provided at both ends. It is a figure which shows the process from a to a fixed state (completed state of a magazine).

FIG. 3A is a development view of the cylindrical body portion of the magazine, showing a state in which the muscle pushing line is inserted in the sheet. FIG. 3 (B) is a view showing a shape in which a forehead portion is formed by bending along the above-mentioned muscle pushing line and filling a portion between the upper surface portion and the folded portion with a resin material. Further, FIG. 3C is a diagram showing the shape of the forehead portion in a state where the magazine is completed by fixing the forehead portion from both ends.

In FIG. 3A, the pushing lines 32a to 32h are drawn on the sheet so as to form the cylindrical body portion 31 of the magazine according to the method usually used when pushing the cardboard or the like. However, as shown in the figure, the muscle pushing line for forming the forehead part of the end of the upper surface portion is that one of the muscle pushing lines (forming the lower end) 32a is the outer side at the center with respect to the virtual horizontal line 33. It is drawn so as to have a bulged arc shape, and the other muscle pushing line (forming the upper end) 32b is a straight line. The arc-shaped muscle pushing line 32a does not necessarily have to be an accurate arc shape as described above, but is formed with a constant radius of curvature for the sake of simplicity of processing (assembly) work. Although this radius of curvature varies depending on the sheet width (width of the tubular body), for example, when making a magazine with a width of 30 cm, the radius of curvature is set to about 7 to 9 m.

Further, in FIG. 3 (A), of the two muscle pushing lines forming the forehead part, one of them is drawn so as to have an arc shape in which the center bulges outward with respect to the virtual horizontal line. The shape of the muscle pushing line can be appropriately determined according to the shape of the forehead.

Next, the sheet is bent along the muscle pushing line formed as described above, and the forehead portion 34 including the lower arcuate end portion 32a and the upper substantially straight end portion 32a having the shape shown in FIG. Can be obtained. At this time, the forehead portion is coated with the above-mentioned curable resin material in an appropriate amount in the void portion formed between the upper surface portion and the folded portion by using the above-mentioned coating means, and the folded portion is pressure-bonded. It can be obtained by As a result, at the same time, a cured product of the curable resin material (second
(See the figure) is formed. It should be noted that, as described above, a treatment such as heating is appropriately performed depending on the type of the adhesive.

The forehead 34 thus obtained can be pressed and fixed on both sides to obtain a forehead which is completed as a magazine as shown in FIG. 3 (C).

When the shape of the forehead is configured as described above, when both ends are fixed by arrows 35 and 36 (fixed by both side plates not shown) in (C) of FIG. , A force 37 (arrow, restoring force) directed to the lower side (slit side) acts, and prevents the upper surface portion from bending outward.
The magnitude of this force 37 varies depending on the material used (rigidity, etc.).

With the shape of the forehead part described above, more resin material can be filled near the center part thereof, and the rigidity of the forehead part can be increased by utilizing the curability of the resin material. Further, as described above, it has an excellent advantage that the restoring force generated from the material itself and the shape of the forehead is obtained.

The structure of the present invention may be subjected to various other usual treatments for shielding light (see Japanese Utility Model Laid-Open No. 61-67128). Further, it goes without saying that the magazine of the present invention can use not only paper materials such as cardboard and cardboard but also plastics as the material.

[Advantageous Effects of the Invention] In the photosensitive material magazine of the present invention, a cured product of a curable resin material filled in the void portion formed between the upper surface portion and the folded portion is used as the reinforcing material. It is possible to impart high rigidity to the entire folded-back portion (upper side portion forming the slit) including the end portion of the upper surface portion. Therefore, the end portion of the upper surface of the magazine constructed as described above is suppressed from being deformed upward (slit expansion) near the center thereof.

Further, in the folded-back portion, a bulge due to the filling with the resin material is obtained as compared with the conventional folded-back state (see FIG. 4), and the strength (rigidity) against bending of this portion is also increased. Also, the above deformation is prevented. Therefore, in the magazine of the present invention, the bulging deformation of the slits, which usually occurs when the magazine is assembled, transported, and used, is less likely to occur, and as a result, the high light-shielding property of the magazine is maintained.

The magazine of the present invention having the above-mentioned advantageous characteristics has a simple structure itself, and has an advantage that it can be assembled very easily by folding a sheet and filling it with a desired resin material, and is called a disposable. It is also advantageous from the viewpoint.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the photosensitive material magazine of the present invention. FIG. 2 is a partial perspective view of the photosensitive material magazine of the present invention, and FIG. 2-A is a sectional view taken along the line II of FIG. FIG. 3 is a view for explaining an assembling process of the cylindrical body portion of the photosensitive material magazine of the present invention. FIG. 4 is a perspective view showing a conventional magazine for photosensitive materials. 10: Magazine 11, 31: Cylindrical body 12a, 12b: Side plate 13: Upper surface folded portion 14: Upper surface portion 15: Front wall folded portion 16: Front wall portion 17: Slit 18: Photosensitive material 19: Paper roll Core 20: Hub hole 21, 34: Frame part 22: Cured material of curable resin material

Claims (2)

[Claims] 1. A flat plate-shaped material having folded portions at both ends thereof, wherein a region near one end is an upper face part and a region near the other end is the wall part, and a slit is provided between the ends. A magazine for a photosensitive material, which comprises a tubular body portion folded so as to be formed, and side plates covering both side portions of the tubular body portion, and between the upper surface portion and its folded portion. A magazine for a photosensitive material, characterized in that flexural deformation of an upper surface folded portion is suppressed by a cured product of a curable resin material filled in a formed void portion. 2. The magazine for photosensitive material according to claim 1, wherein the folded-back portion at the end portion of the upper surface portion has a forehead portion which is a surface substantially parallel to the front wall portion on the front surface.