JPH0657893U - A roll-shaped photosensitive material package that can be loaded in a bright room - Google Patents

Abstract

(57) [Abstract] [Purpose] A roll-shaped photosensitive material wound around a core of a paper tube or the like is provided with a light-shielding disk-shaped side wall cover and a light-shielding reader at the end of the photosensitive material to reduce costs. (EN) Provided is a roll-shaped photosensitive material package which is light in pollution load and can be surely shielded from light and is easy to handle and can be loaded in a bright room or a dark room. A long halogenated winding shaft is formed on a winding shaft formed by combining a hollow winding core and a pair of flanges each having a protrusion portion tightly fitted to both ends of the winding core and a side wall cover concentric with the protrusion portion. A silver light-sensitive material is wound in a roll shape, and a leader wider than the light-sensitive material is joined to the end portion of the light-sensitive material at one or more outermost turns of the light-sensitive material, and at least the flange and the light-shielding property are light-shielding. The outer diameter of the side wall cover of the flange is larger than the outer diameter of the outermost leader portion wound in a roll shape, and both side edges of the leader are the inner surface of the outer peripheral edge portion of the side wall cover of the flange. A roll-shaped photosensitive material package, which is bent outward and is in contact with the inner surface and fixed by heat sealing, and the side wall cover has a thickness of 0.2 to 1.0 mm.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a packaging body in which a roll-shaped film of a photosensitive material for printing can be loaded into a printer (exposure device) in a bright room.

[0002]

[Prior art]

 As a packaging form of the roll film of the photosensitive material for printing which can be loaded in the bright room, there is French Patent No. 2,503,400, which has two plastic films as shown in the perspective view of FIG. A light-sensitive material 54A wound around a winding core 53 is housed in a light-shielding box 52 formed of an outer shell 51, and a shaft 55 of an end plate 54 made of plastic that is fixed to both ends of the winding core 53 is formed on the outer shell 51. The bearing 56 is pivotally supported.

However, since the light shielding box and the like are made of plastic and the structure itself is complicated, the manufacturing cost becomes high and it cannot be used as a disposable product.

Further, since it is formed of a large-sized plastic, there is a problem that the disposability after use is extremely poor.

As a form for solving such a problem, a method of forming with a paper material is also known as disclosed in JP-A-61-219040. However, this form also requires a paper box to block light, which is still high in terms of manufacturing cost.

As a roll-shaped photosensitive material for further loading in a bright room, which is further advanced, as shown in the perspective view of FIG. 4A and the sectional view of FIG. It has a form that does not use boxes. This is composed of the side cover 41, the reader 15 and the paper tube 13 which are respectively shielded from light, and is considered to be low in cost.

[0007]

[Problems to be solved by the device]

 However, the one disclosed in Japanese Patent Application Laid-Open No. 2-72347 has a problem in light-shielding property which is the original purpose. This problem is caused when the disc-shaped side cover 41 is attached to the paper core. In other words, the disc-shaped side cover 41 is flat and aligned and fixed to the center of the paper tube 13 around which the roll-shaped photosensitive material is wound, but the center of the centered side cover 41 is radial. A notch tack 42 is provided with a gap 43 in between and is folded and bonded to the inner diameter surface of the inner side of the paper tube 13. If the side cover 41 is stopped by the paper tube 13 due to the misalignment of the centers, the seal positions of the cover 41 and the reader 15 are misaligned and light leakage occurs. Therefore, it is necessary to improve the alignment accuracy.

Further, the notch tuck portion 42 of the side cover 41 that is folded and stuck inside the paper tube 13 is a shaft of a loading section of the device when the rolled photosensitive material is loaded into a device such as an image exposure device. It was hit by the light and was peeled off, resulting in light leakage from that part.

According to the present invention, such a roll-shaped light-sensitive material that can be loaded in a bright room is completely shielded from light when it is set on a device for image exposure or before setting, and no light leakage occurs. An object of the present invention is to provide a roll-shaped photosensitive material in a packaging form.

[0010]

[Means for Solving the Problems]

 The purpose of this is to provide a long winding shaft with a hollow winding core and a pair of flanges having projections that tightly fit on both ends of the winding core and side wall covers concentric therewith. The silver halide light-sensitive material is wound in a roll shape, and a leader wider than the light-sensitive material is joined to the end portion of the light-sensitive material for one or more turns of the outermost circumference of the light-sensitive material, and at least the flange. The leader has a light-shielding property, the outer diameter of the side wall cover of the flange is larger than the outer diameter of the outermost leader part wound in the roll shape, and both side edges of the leader are side wall covers of the flange. A roll-shaped photosensitive material package characterized by being bent outward from the inner side surface of the outer peripheral edge portion, being in contact with the inner side surface and fixed by heat sealing, and having a thickness of the side wall cover of 0.2 to 1.0 mm. Achieved by

[0011]

【Example】

 An embodiment of the present invention will be described with reference to the axial sectional views of FIGS.

In FIG. 1, a light-shielding plastic flange 10 having a boss 12 at the center and a disk-shaped side wall cover 11 at both ends of a paper tube 13 is joined to form a core, and a flange is formed on the flange. A photosensitive material having a width slightly smaller than the inner width of the space is wound, and a light-shielding leader 15 is joined to the winding end (tip) of the photosensitive material and wound one or more times. It is welded to the inner surface of the side wall cover 11 of 10. Then, when it is loaded in the exposure device or the like, the terminal of the leader 15 is unwound and is sandwiched between, for example, driving nip rollers of the conveying means to automatically start the transportation.

The material of the flange 10 includes PE, PP, PS, PVC, acrylic resin, polycarbonate, ABS and the like, but PE, PS and PP are preferable. The molding means may be injection molding or vacuum molding, but vacuum molding is preferable.

The thickness of both side wall covers 11 is preferably 0.2 to 1.0 mm, more preferably 0.3 to 0.7 mm.

Further, the light-shielding property is such that the content of carbon black (C.B) is 0.1 to 10 wt%, preferably 0.2 to 3.0 wt%, more preferably 0.4 to 1.5 wt%, which correlates with the side wall cover thickness. It is set arbitrarily.

The boss 12 is necessary when set and coupled with the paper tube 13 which is a winding core, and the diameter of the boss 12 is −1.0 to 2 mm different from the diameter of the paper tube 13. Such dimensions may be used regardless of whether they are continuous or discontinuous. More preferably the size is -0.5 to 1.0 mm.

When the flange 20 as shown in FIG. 2 is provided, the flange becomes light, but the light-shielding property of the paper tube must be ensured. However, although not shown, if the tip of the boss 22 is closed in a bag shape, the light shielding property of the paper tube is not particularly required.

Next, the material of the leader 15 is also blended with carbon black (CB) so as to have a light-shielding property. LDPE (low density polyethylene), MDPE (medium density polyethylene), HDPE (high density) Polyethylene, EVA, acrylic, rubber such as SBR and thermoplastic resin such as polyester are suitable.

The layer structure may be a single layer or two or more layers, and it is preferable that the layer which is outside the photosensitive material does not break when the inner set is sealed. The thickness is suitably 50 to 250 μm, more preferably 100 to 200 μm. When the number of layers is two or more, the sealing layer is preferably about 20 to 50 μm. As a manufacturing method thereof, extrusion laminating, coextrusion laminating, inflation or the like is preferable.

In addition, as a material selection condition depending on the relationship between the flange and the leader, it is necessary to heat-seal both, so that the materials are preferably materials having good adhesiveness to each other. For example, it is desirable that both materials contain a common material. The temperature at the time of heat sealing is preferably as low as possible, but 60 to 200 ° C, preferably 70 to 150 ° C is desirable.

Further, in order to set the boss 12 or 22 of the flange 10 or 20 on the inner diameter portion of the paper tube 13, there are pressure bonding, welding and hot melt adhesion, but other adhesives may be used. However, it is not possible to cause fogging or desensitize the light-sensitive material.

Further, as a means for joining the leader 15 to the end of the photosensitive material 14, welding or an adhesive may be used, or an adhesive tape may be used.

Further, the heat sealing between the leader 15 and the flange 10 or 20 can be performed relatively easily and stably while heat-sealing while the leader 15 is wound.

Finally, the end of the winding end of the leader 15 is stopped by an adhesive tape, a label, or an adhesive.

The following table shows the experimental results of the package thus prepared. The photosensitive material used in the examples of Experiment Nos. 1 to 9 was RSP3-100E, which is a photosensitive material for printing made by Konica Corporation, and a width of 338 mm and a length of 61 m was placed in a dark room for 1 hour, and the number of completed products was counted. , The finished product was tested for light shielding. The shading test was conducted at 1500 LX for 30 minutes.

Further, all such samples were set in Select 5000 manufactured by Agfa Co., Ltd. in a bright room, but the data of Comparative Example 2 was too wide in the width direction from the set portion and could not be set. At that time, the roll holding member did not fit, and the test was impossible.

The light-shielding property of Comparative Example 1 was extremely poor as shown in the table. However, in the experimental results of Examples 1 to 9, there was no problem with the light shielding property.

[0028]

[Table 1]

Further, if such a roll-shaped photosensitive material package is wrapped in an air cap sheet and packed, it is more advantageous in terms of protection from external disturbances such as during distribution, and the roll-shaped photosensitive material package is Further, if it is placed in a cardboard box, it is also advantageous for protection of the package.

[0030]

[Effect of device]

 The roll-shaped photosensitive material package of the present invention covers the roll-shaped photosensitive material wound on a paper tube with a flange having a rigid and thin light-shielding disk-shaped cover on both sides, and at the same time, the center portion of the flange is covered. The boss on the core fits snugly into the core of the paper core, and both edges of the light-shielding leader attached at the end of the film are welded on the outer circumference of the flange and loaded into the exposure device in a bright room. Therefore, it is very easy to handle, the light-shielding property is reliable, it is easy to handle, and the cost is low, and it is convenient to be used as both an image exposure apparatus for loading in a bright room and for loading in a dark room. And the pollution load is considerably reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of another embodiment of the present invention.

FIG. 3 is a perspective view of a conventional roll-shaped photosensitive material package.

FIG. 4 is a perspective view and a sectional view of another conventional roll-shaped photosensitive material package.

[Explanation of symbols]

 10,20 Flange 11,21 Side wall cover 12,22 Boss 13 Paper tube 14 Photosensitive material 15 Reader 30 Flange 41 Side cover

Claims (1)

[Scope of utility model registration request] 1. A long winding shaft formed by combining a hollow winding core and a pair of flanges each having a protrusion and a side wall cover concentric with the protrusion fitting tightly on both ends of the winding core. A silver halide light-sensitive material is wound in a roll shape, and a leader wider than the light-sensitive material is joined to the end portion of the light-sensitive material at one or more outermost turns of the light-sensitive material, and at least the flange and the leader are It has a light-shielding property, and the outer diameter of the side wall cover of the flange is larger than the outer diameter of the outermost leader part wound in a roll shape, and both side edges of the leader are inside the outer peripheral edge part of the side wall cover of the flange. A roll-shaped photosensitive material package, which is bent outwardly on a side surface, is in contact with the inner side surface, and is fixed by heat sealing, and the side wall cover has a thickness of 0.2 to 1.0 mm.