JP2002040602A - Roll-form photosensitive material package body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll-form photosensitive material package body which has flank light shielding members of material different from the material of a light-shielding leader on both flanks, draws out the light-shielding leader, while tearing the peripheral edges of the flank light shielding members, obviates the occurrence of fogging by static and can be used assuredly. SOLUTION: This roll-form photosensitive material package body has the light-shielding leader which is joined to the front end of the roll-form photosensitive material package body and is wound around the outer peripheral surface of the roll-form photosensitive material and the flank light-shielding members which are folded and put on the outer peripheral surface sides along the outer peripheral marginal portions of the roll-form photosensitive material, are adhered and fixed to the light-shielding leader and are separated from the light-shielding leader in unsealing on both flank. The surface roughness on the surface side of the light-shielding leader, in contact with the rolled photosensitive material, is 5 to 100 μm (maximum height).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll-shaped photosensitive material package used for charging a bright room.

[0002]

2. Description of the Related Art In recent years, compact automatic developing apparatuses in which a so-called mini-lab and a developing machine are integrated have become widespread, and the installation place is a place where people such as supermarkets, game centers, retail stores and station squares gather. Wherever it is, it is becoming more of a place. As a result, the amount of photosensitive material used has increased, and the frequency of new loading has also increased. In order to newly load the photosensitive material into the apparatus, the photosensitive material is loaded into a dedicated magazine in a dark room which is shielded from light.However, recently, there are many amateurs such as part-time workers and part-time workers. Was hated. In addition, if the printing operation is performed unaware that the loading has failed, the photosensitive material in the apparatus may be clogged or cut off, and the delivery time may be lost or wasted due to trouble being dealt with. The cost of the photosensitive material is not negligible when viewed on a monthly basis, and there is a demand for a method of loading the photosensitive material into the apparatus without any failure so that anyone can load the photosensitive material in order to increase the profit even a little.

[0003] In response to these demands, in recent years, roll-shaped photosensitive material packages capable of being loaded in a bright room, so-called bright-room loaded roll-shaped photosensitive material packages (hereinafter, also referred to as bright-room loading packages) have been developed. Proposed. The light-room-packaging package is loaded in a magazine while maintaining its light-shielding property, and when the first exposure is performed, the light-shielding material is broken in the magazine to form a slit (opening) formed in the magazine. ), A belt-shaped photosensitive material is drawn out of the package, and such a bright room loading package is regarded as an important means for realizing a simple magazine loading means, and is excellent in that even an amateur can load it.

[0004] Conventionally, the following form is known as such a package for loading into a bright room. One is JP-A-10-111.
No. 546, a light-shielding leader is further wound around the outer periphery of the roll-shaped photosensitive material around the leading end of the roll-shaped photosensitive material wound around the core, and a part of the light-shielding leader is widened. Further, there is a bright room charging package in which a wide portion is folded over a side surface along a peripheral portion of a roll-shaped photosensitive material to shield the side surface from light. A drawback of these lightroom-filled packages is that, when used, the light-shielding leader is pulled out when the wide part that is folded over to the side is cut along the peripheral edge that is integral with the light-shielding leader. The same durable material makes it difficult to cut, and the cutout of the light-shielding leader is not straight, so that the light-shielding leader is caught by the processing machine, cannot be conveyed well, and causes a jamming failure. Further, from the viewpoint of storability, there is a danger that the performance will be deteriorated when stored in a minilab workplace for a long period of time because of lack of moisture proof properties of the side surface.

[0005] As another measure, as a countermeasure against the drawbacks of the package for charging a bright room, a roll wound around a core as disclosed in, for example, JP-A-2000-035634 and JP-A-8-314074. A light-shielding leader wound around the outer periphery of the roll-shaped photosensitive material at the end of the photosensitive material, and side light-shielding members made of a material different from the light-shielding leader on both sides of the roll-shaped photosensitive material. In addition, there is a bright room charging package in which the side light shielding member is folded along the outer peripheral surface at the outer peripheral edge portion of the roll-shaped photosensitive material. As the side light-shielding member of the package for loading the light room, first, paper is used as a base material so that the light-shielding reader is easily cut off, and aluminum foil is used to make it easy to bend from the light-shielding property, moisture-proof property and manufacturing side. ing. Further, polyethylene is laminated and used to prevent the paper from shrinking due to humidity. By using these materials, the drawbacks of the package for charging a bright room are improved, and a light-shielding leader wound around the outer peripheral surface of the roll-shaped photosensitive material is partially exposed in the bright room. After the loading package is loaded in the cartridge, it can be used by attaching the cartridge to the printer, so the workability has been greatly improved compared to the work conventionally performed in the dark room, so that anyone can load the cartridge. Significant improvement is recognized in the point that became.

[0006] However, it has been found that there is a new problem that the photosensitive material is fogged by static when the package for loading the light room is handled in a minilab. Since the presence or absence of these fogs can be determined only after the development process is completed, reprinting is performed if fogging occurs after looking at the finished print, but in some cases it may not be in time for delivery, The cost of the photosensitive material was not negligible when viewed on a monthly basis, and in order to increase profits even a little, there was a need for the development of a package for light room charging that can be used safely without fogging due to static. .

In view of such a situation, the present inventors have conducted various studies on the occurrence of fog due to static of the package for loading in a bright room. Since it is concentrated at the top, the package for loading the light room is stored in a cartridge, the cartridge is attached to the printer, and during a series of operations for printing, the package is placed on the outer surface of the light-shielding reader. When pulling out the light-shielding leader while tearing off the peripheral edge of the side light-shielding member that is folded and adhered and fixed, succeeded in finding out that the light-shielding leader is caused by a discharge generated between the light-shielding leader and the roll-shaped photosensitive material, The present invention has been completed.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a roll-shaped photosensitive member having side light-shielding members made of a material different from that of the light-shielding leader on both side surfaces, and pulling out the light-shielding leader while tearing the peripheral edge of the side light-shielding member. In material packaging,
An object of the present invention is to provide a roll-shaped photosensitive material package that can be used without any fogging due to static.

[0009]

The above objects of the present invention can be achieved by the following components.

1) a roll-shaped photosensitive material wound around a core;
A light-shielding leader joined to the leading end of the roll-shaped photosensitive material and wound on the outer circumferential surface of the roll-shaped photosensitive material; and the light-shielding leader folded over the outer circumferential surface along the outer circumferential edge of the roll-shaped photosensitive material. In a roll-shaped photosensitive material package having on both sides a side light-shielding member that is adhered and fixed to the outer peripheral surface of the leader and separated from the light-shielding leader when opened, the surface of the light-shielding leader on the side in contact with the roll-shaped photosensitive material A roll-shaped photosensitive material package having a roughness of 5 to 100 μm (the maximum height specified in JIS B0601).

2) a roll-shaped photosensitive material wound around a core;
A light-shielding leader joined to the leading end of the roll-shaped photosensitive material and wound around the outer peripheral surface of the roll-shaped photosensitive material; and a light-shielding leader folded over the outer peripheral surface along the outer peripheral edge of the roll-shaped photosensitive material. In a roll-shaped photosensitive material package having on both sides a side light-shielding member that is adhered and fixed to the outer peripheral surface of the light-shielding leader and separated from the light-shielding leader when opened, the surface resistivity of the light-shielding leader on the side in contact with the roll-shaped photosensitive material A roll-shaped photosensitive material package having a ratio of 1 × 10 ⁵ to 1 × 10 ¹³ Ω.

3) a roll-shaped photosensitive material wound around a core;
A light-shielding leader joined to the leading end of the roll-shaped photosensitive material and wound around the outer peripheral surface of the roll-shaped photosensitive material; and a light-shielding leader folded over the outer peripheral surface along the outer peripheral edge of the roll-shaped photosensitive material. In a roll-shaped photosensitive material package having side light-shielding members on both sides that are adhered and fixed to the outer peripheral surface of the light-shielding leader and are separated from the light-shielding leader when opened, the side of the side light-shielding member that is in contact with the roll-shaped photosensitive material side surface A roll-shaped photosensitive material package having a surface resistivity of 1 × 10 ⁵ to 1 × 10 ¹³ Ω.

4) The surface resistivity of the light-shielding reader in contact with the roll-shaped photosensitive material is 1 × 10 ⁵ to 1 × 10 ¹³ Ω.
3. The roll-shaped photosensitive material package according to 3) above,

5) The light-shielding reader is made by a hot-melt laminating method.
Item 14. A roll-shaped photosensitive material package according to item 8.

6) The roll-shaped photosensitive material package according to any one of 1) to 4), wherein the light-shielding leader is made by an extrusion lamination method.

7) The side light-shielding member is a multilayer material including paper as a base material and including one aluminum foil layer.
6) The roll-shaped photosensitive material package according to any one of the above 6).

The present invention will be described in more detail with reference to the drawings. FIG. 1 is a schematic diagram of a roll-shaped photosensitive material package in which a side light-shielding member is folded over an outer peripheral surface along an outer peripheral edge portion of the roll-shaped photosensitive material, and is adhered and fixed to an outer peripheral surface of the light-shielding reader. In the drawing, reference numeral 1 denotes a roll-shaped photosensitive material package. Reference numeral 2 denotes a light-shielding leader wound on the outer peripheral surface of a roll-shaped photosensitive material wound around a core, and 201 denotes a tapered portion for forming a narrow portion 202 at the tip of the light-shielding reader 2. Reference numeral 203 denotes a wide portion of the light-shielding reader 2. Details of the shape of the tip of the light-shielding reader 2 will be described later.

Reference numeral 3 denotes a side light-shielding member that covers the side surface of the roll-shaped photosensitive material package 1 and shields the light, and is provided on both side surfaces. The side surface light-shielding member 3 is formed in a thin donut shape having a hole formed in the center portion. Although not shown in this drawing, the side surface light-shielding member 3 is attached to the end surface of the core by an emulsion adhesive, an adhesive tape, heat bonding, or the like. Glued. The inner diameter of the side light-shielding member 3 is formed so as to be equal to or slightly larger than the inner diameter of the winding core, and the outer diameter is not shown in the drawing, but is preferably 10 to 50 mm larger than the outer diameter of the roll-shaped photosensitive material. Has a surplus portion so as to be 15 to 30 mm larger than the outer diameter of the roll-shaped photosensitive material. Numeral 301 denotes a portion where the surplus portion of the side light-shielding member 3 is folded over the outer peripheral surface of the light-shielding reader 2 along the outer peripheral edge of the roll-shaped photosensitive material, and this portion is adhered and fixed to the outer peripheral surface of the light-shielding reader 2. ing. As shown in FIG. 1, the outer peripheral surface of the light-shielding reader 2 to which the portion 301 of the side light-shielding member 3 that is folded over the outer peripheral surface of the light-shielding reader 2 is fixed.
Of the light-shielding reader 2 is adhered and fixed so as to partially cover the tapered portion 201 of the light-shielding reader 2. 302
Indicates an edge portion of the side light shielding member 3.

Reference numeral 4 denotes a terminal label formed of a removable adhesive tape. The front end of the light-shielding reader 2 is fixed to the outer peripheral surface of the light-shielding reader 2 to prevent unwinding. Note that this terminal label 4
Although not shown in the drawing, a symbol such as an arrow indicating the setting direction to the magazine, and a design such as data indicating a winding length and a width may be applied to the.

FIG. 2 is a schematic exploded view of the rolled photosensitive material package shown in FIG. In the figure, reference numeral 6 denotes a roll-shaped photosensitive material, 601 denotes a peripheral portion of the roll-shaped photosensitive material 6, and the roll-shaped photosensitive material 6 is a belt-shaped photosensitive material 6 on an outer peripheral surface of a core 7.
02 is wound up in a roll shape. Examples of the belt-shaped photosensitive material 602 include ordinary photographic films, for example, color negative films, color papers, printing plate making films and papers. Although the material of the core 7 is not particularly limited, it is preferable to use paper as a base material. In addition, the entire core 7 may be made of only resin.
The inner diameter of the core 7 is set to an inner diameter that matches the printer to be used. The length of the winding core 7 in the width direction is a band-shaped photosensitive material 6.
It is preferably equal to or slightly shorter than the width of 02. In addition, the core 7 is generally formed by winding a band-like material and solidifying it, and further has a light-shielding property. However, if a thermoplastic resin layer is inserted in the layer constituting the core, the adhesive with the side light-shielding member 3 is formed. This is preferable because the property is improved. Further, since the side surface light shielding member 3 is fixed to the end face of the core 7, the thickness of the core 7 is 2 to 10 mm.
Is preferable, and 5-7 mm is more preferable.

The wide portion 203 of the light-shielding reader 2 is a band-shaped member having a width equal to or slightly smaller than the width of the band-shaped photosensitive material 602 and a length equal to or larger than the outer periphery of the roll-shaped photosensitive material 6. Is bonded to an end of a belt-shaped photosensitive material 602 wound around a core 7 by a splice tape 8. Moreover, you may join by ultrasonic welding.

On the other hand, on the tip side of the light-shielding reader 2,
A narrow portion 2 having a narrow shape through a tapered portion 201 whose width is gradually narrowed from both side ends near the distal end toward the distal end.
02 is formed. The tapered portion 201 is preferably linear, and the angle θ formed with the edge of the light-shielding reader 2 is preferably 30 to 60 °, and most preferably 45 °. When the light-shielding leader 2 is pulled out when the angle is less than 30 ° or when the angle exceeds 60 °, the portion 3 of the side light-shielding member 3 that is folded over the outer peripheral surface of the light-shielding leader 2
01 cannot be easily torn.

Reference numeral 5 denotes a backing material for the side light shielding member 3. The backing material 5 is used to prevent leakage of light from the side light-shielding member 3 when a pinhole, a tear, or the like occurs.
It is provided below. The backing material 5 is the side light shielding member 3
5 to 10 mm smaller than the outer diameter of the hole, the hole formed at the center is 5 to 10 mm larger than the hole of the side light shielding member 3, and has the same shape as the side light shielding member 3; It is fixed and is folded over the outer peripheral surface of the light-shielding reader 2 together with the surplus portion of the side light-shielding member 3.

FIG. 3 is a schematic view showing the use state of the roll-shaped photosensitive material package 1. FIG. 3A shows the end label 4
5 is a schematic diagram showing a state in which the narrow width portion 202 at the tip of the light-shielding leader is pulled out in a free state. FIG.
(B) is a schematic diagram showing a state where the light-shielding reader 2 has been pulled out. It should be noted that the magazine in which the roll-shaped photosensitive material package 1 is loaded is omitted for easy understanding of the state of use.

First, when the terminal label 4 is peeled off and the narrow portion 202 at the tip of the light-shielding reader is pulled out in a free state, as shown in FIG. Starts to tear the portion 301 folded over the outer peripheral surface of the light-shielding reader 2
Further, as the light-shielding leader 2 is pulled out, the edge portion 302 of the side light-shielding member 3 is torn while being guided by the tapered portion 201, and then the side end of the light-shielding leader 2 is moved to the edge portion 302 of the side light-shielding member 3. Along the peripheral edge 601 of the roll-shaped photosensitive material 6. When the light-shielding leader 2 is further pulled out, the portion 301 adhered and fixed to the outer peripheral surface of the light-shielding leader 2 is completely separated from the side light-shielding member 3 as shown in FIG. It is torn in a substantially circular shape and remains on both side surfaces of the roll-shaped photosensitive material package 1.

As described above, as a result of examining the fact that fogging due to static is generated in the light room charging package according to the present invention, the generated static marks are concentrated on the leading portion of the roll-shaped photosensitive material 6. Therefore, in a series of operations described above, the light-shielding reader 2 is pulled out while tearing the portion 301 of the side-surface light-shielding member 3 that is adhesively fixed to the outer peripheral surface of the light-shielding leader 2 and the edge 302 of the side-surface light-shielding member 3. At times, it was presumed to be caused by discharge between the light-shielding reader 2 and the roll-shaped photosensitive material 6.

The material structure and physical characteristics of the light-shielding reader 2 used in the present invention will be described below. Shading reader 2
Has a function as a light shielding member for protecting the peripheral surface of the roll-shaped photosensitive material 6 from light, moisture, dust and the like. Therefore, the material used for the light-shielding reader 2 has a sufficient light-shielding property, moisture-proof property and physical strength to tear the side light-shielding member 3, and is not particularly limited as long as it does not adversely affect the photosensitive material such as fog. It is not limited and various packaging film materials can be used. For example, new developments in functional packaging materials include laminated materials described in Toray Research Center Co., Ltd. and JP-A-8-179473. Specifically, a light-shielding polyethylene film containing carbon black or a laminated film obtained by combining a light-shielding polyethylene film containing carbon black with nylon, polyester, or the like is preferable. The total thickness of the light-shielding reader 2 is preferably about 100 to 200 μm.

The light-shielding reader of the present invention can be produced by a general laminating method. For example, Convertec 1990.5, pp. 40-48, 199
3.3 Methods described on pages 40-48.
However, among the various methods, the dry lamination method is not preferable in the present invention because the polyurethane adhesive used inhibits the effect of the antistatic agent, and the extrusion lamination method and the hot melt lamination method without using the polyurethane adhesive are preferred. Is preferred.

When the light-shielding leader 2 is pulled out while tearing the portion 301 of the side-surface light-shielding member 3 adhered and fixed to the outer peripheral surface of the light-shielding leader 2 and the edge portion 302 of the side-light-shielding member 3, the light-shielding leader 2 and the roll-shaped photosensitive material 6 are pulled out. In order to prevent discharge occurring between the light-shielding members 602, the surface resistivity of the surface of the light-shielding reader 2 which is in contact with the belt-shaped photosensitive material 602 is 1 × 10 ⁵ to
It is preferably 1 × 10 ¹³ Ω. If it is less than 1 × 10 ⁵ Ω, metal powder, a metal layer and the like must be added, which is expensive and is not preferable. In the case of an additive, the additive exudes to the surface, which is not preferable. If it exceeds 1 × 10 ¹³ Ω, there is no antistatic effect, which is not preferable. The surface resistivity can be measured using a teraohm meter manufactured by Kawaguchi Electric Co., Ltd. according to the method described in JIS K6911.

As a means for keeping the surface resistivity of the light-shielding reader 2 within the range of the present invention, it is preferable to use an antistatic agent. As the antistatic agent to be used, for example, it is preferable to include the antistatic agents described in JP-A-62-286042 and JP-A-2000-98545, and as the preferable antistatic agent, various surfactants can be used. it can. For example, representative examples of the nonionic surfactant are shown below. Polyethylene glycol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkylamine, polyoxyethylene alkylamine fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene alkylphenyl ether, polyoxyethylene Glycerin fatty acid ester, polyoxyethylene fatty amine, sorbitan monofatty acid ester, fatty acid ventaerythrit, fatty alcohol ethylene oxide adduct, fatty acid ethylene oxide adduct,
Fatty acid amino or fatty acid amide ethylene oxide adduct, alkylphenol ethylene oxide adduct, alkyl naphthol ethylene oxide adduct,
An ethylene oxide adduct of a partial fatty acid ester of a polyhydric alcohol, polyoxyethylene alkyl amide,
Alkylamine derivatives, other JP-B-63-26697
And various non-ionic antistatic agents. Representative examples of the anionic surfactant are shown below. Ricinoleic acid sulfate soda salt, various fatty acid metal salts, silinoleic acid ester sulfuric acid ester soda salt, sulfated ethyl aniline sulfate, olefin sulfate ester salt, oleyl alcohol sulfate soda salt, alkyl sulfate ester salt,
Fatty acid ethyl sulfonate, alkyl sulfate,
Alkyl phosphate, alkyl sulfonate, alkyl naphthalene sulfonate, alkyl benzene sulfonate, succinate sulfonate, phosphate ester salt and the like. Representative examples of the cationic surfactant are shown below. Examples include amphoteric surfactants such as primary amine salts, tertiary amine salts, quaternary ammonium salts, trialkylbenzylammonium salts, and pyridine derivatives. Further, it is possible to select and use a kind and an addition amount from various antistatic agents disclosed on pages 776 to 778 of the Plastic Data Handbook (published by the KK Industrial Research Association on April 5, 1984).

Among the above surfactants, it is particularly preferable to use a nonionic (nonionic) surfactant as an antistatic agent because it has a small adverse effect on photographic properties and human body and a large effect of preventing static marks.

The content of the antistatic agent is preferably 0.01 to 20% by mass, more preferably 0.05 to 10% by mass, and most preferably 0.10 to 1.0% by mass. When the content is less than 0.01% by mass, there is no effect of addition and only the kneading cost increases. On the other hand, when the total content exceeds 20% by mass, there is no effect of increasing the amount, and only the cost is increased. Furthermore, the amount of bleed-out increases with time, and the surface of the packaging material for photographic light-sensitive materials becomes sticky, which is not preferable. The method of adding these antistatic agents is not particularly limited, but is preferably kneaded into the light-shielding reader 2, for example, Convertec 1992.7 59-6.
It is possible by the method described on page 1.

As another means for suppressing the charging of the light-shielding reader 2, it is possible to change the surface roughness of the light-shielding reader 2. For example, if the surface roughness of the light-shielding reader 2 is 5 to
100 μm (maximum height), preferably 10 to 30 μm
(Maximum height) is possible. Maximum height 5
If it is less than μm, there is no antistatic effect and the maximum height is 100μ
When m exceeds m, a thin portion is formed and light-shielding properties are lost, which is not preferable. The surface roughness of the light-shielding reader 2 is 5 to 10
The method for processing to 0 μm (maximum height) is not particularly limited, and for example, it can be processed by the method described in Plastic Processing Technology Handbook, Nikkan Kogyo Shimbun, pages 836 to 854.

The surface roughness of the present invention is determined according to JIS B0601.
Represents the maximum height (Ry) specified in
Using a measuring machine manufactured by Tokyo Seimitsu Surfcom, JIS
It can be measured according to the measurement method described in B0601.

A specific layer configuration of the light-shielding reader 2 having a layer containing an antistatic agent will be described with reference to the drawings. FIG. 4 is a schematic sectional view of an example of the light-shielding reader 2 manufactured by the extrusion lamination method. In the drawing, reference numeral 9 denotes a light-shielding layer containing carbon black. 11 indicates a reinforcing layer, and 10 indicates an adhesive layer. In this drawing, the light-shielding layer is provided in the uppermost layer and the lowermost layer, but is not limited to these, and is not limited thereto.
It is also possible to include carbon black in the reinforcing layer 11 to form a light shielding layer. The amount of carbon black to be added is preferably 4 to 6% by mass, and it is most effective to include the antistatic agent in the lowermost layer on the side in contact with the roll-shaped photosensitive material. As the thermoplastic resin used for the light-shielding layer 9 shown in this figure, low-density polyethylene is preferable, and the thickness is 30 to 50 μm. As the low-density polyethylene to be used, low-density polyethylene (LDPE) using a metallocene catalyst or linear low-density polyethylene (LLDP)
E) is preferred. The reinforcing layer 11 is made of polyethylene terephthalate (PET) having a thickness of 45 to 55 μm. Reference numeral 10 denotes a thickness of 18 to 22 μm for laminating the light shielding layer 9 and the reinforcing layer 11.
m shows a polyethylene layer.

The material composition and electrical characteristics used for the side light shielding member 3 and the backing material 5 of the present invention will be described below. The side light-shielding member 3 has a function of protecting the side surface of the roll-shaped photosensitive material 6 from light, moisture, dust, and the like, has a physical strength that can be easily torn by the light-shielding reader 2 when opened, and There is no particular limitation as long as it has no adverse effect such as fog. Further, the backing material 5 has a function of preventing fogging of the roll-shaped photosensitive material 6 due to light leakage from the pinhole when a pinhole is generated in the side surface light shielding member 3, and has an adverse effect on the photosensitive material such as fog. It is not particularly limited as long as it does not exert any effect, and various packaging film materials can be used. For example, Convertech 1991.
4, 1991.11 110-114, 1992.
1 65-68, 1992.2 70-74 199
2.3 168 to 172 can be appropriately used in combination. For example, as the side light shielding member 3, a laminated material composed of paper and aluminum foil,
As the backing material 5 of the side light shielding member 3, a laminated material composed of paper and polyethylene (PE) can be used. In use, the paper layer surface of the side light-shielding member 3 and the paper surface of the backing material 5 of the side light-shielding member 3 are bonded to each other with an adhesive, and the total thickness is 200 μm or less, such as aluminum foil, paper, polyethylene film, or the like. It is possible to manufacture it by changing the thickness.

As a method for producing the side light-shielding member and the backing material of the present invention, it is preferable to produce it by the same method as that for producing the light-shielding reader.

The state when the side light shielding member 3 is used will be described with reference to the drawings. FIG. 5 shows a schematic layer configuration in which the side light shielding member 3 and the backing material 5 and the backing material 5 are laminated on the side light shielding member 3. FIG.
5A shows a schematic cross-sectional view of an example of the side light shielding member 3, and FIG. 5B shows a schematic cross-sectional view of an example of the backing material 5.
(C) is a schematic cross-sectional view in which the side light-shielding member 3 and the backing material 5 during use are laminated with an adhesive. 12 in the figure is a thickness of 60 to 7
0 .mu.m, shows a paper layer having a basis weight 68~74g / m ^2, 13 denotes an aluminum foil layer having a thickness of 6～7Myuemu. The lamination of the paper layer 12 and the aluminum foil layer 13 was performed with a vinyl acetate adhesive. 14 is a paper layer containing carbon black, 15 is a low density polyethylene (LDPE), a linear low density polyethylene (LLDP)
E) shows a thermoplastic resin layer. Lamination of the paper layer 14 and the thermoplastic resin layer 15 was performed by extrusion lamination of a thermoplastic resin. Reference numeral 16 denotes an adhesive layer for laminating the paper layer of the side light shielding member 3 and the paper layer of the backing material 5.

By laminating in this manner, a member having excellent moisture-proof properties can be obtained, and it is possible to prevent moisture permeation from the side surface of the roll-shaped photosensitive material 6. In use, the thermoplastic resin layer 15 is made to be on the side surface of the roll-shaped photosensitive material 6. Of course, carbon black for light shielding may be included in the paper layer 12 and the thermoplastic resin layer 15.

[0040] The surface resistivity of the thermoplastic resin layer 15 is preferably ^{1 × 10 5 ~1 × 10 13} Ω, the metal powder of less than 1 × 10 ⁵ Ω, must put a metal layer or the like Expensive and undesirable. In the case of an additive, the additive exudes to the surface, which is not preferable. If it exceeds 1 × 10 ¹³ Ω, there is no antistatic effect, which is not preferable. As a means for keeping the surface resistivity within the range of the present invention, it is preferable to use the antistatic agent used for the light-shielding reader 2.

[0041]

EXAMPLES The present invention will be described below with reference to examples, but is of course not limited thereto.

Example 1 <Preparation of used material> (Roll-shaped photosensitive material) Konica Color Q having a width of 127 mm
A paper (QAA7 type, surface quality: glossy) was wound 175 m around a 6 mm thick paper core to obtain a roll-shaped photosensitive material.

(Light shielding reader) LDPE 45 μm / PE 20 μm / P
A laminated material of ET 50 μm / PE 20 μm / LDPE 45 μm was produced. DFD-0111 manufactured by Nippon Unicar was used as the upper and lower LDPEs, and carbon black was added in an amount of 5.0% by mass to form a light-shielding reader. When a light-shielding reader was manufactured, a roll having a predetermined surface roughness was used for the LDPE layer, and a light-shielding reader having a surface roughness changed as shown in Table 1 by calendering was manufactured.

(Side light-shielding member) A 7 μm-thick aluminum foil is laminated on a paper having a basis weight of 71 g / m ² and a thickness of 65 μm using a vinyl acetate adhesive, and is 30 mm from the outer diameter of the roll-shaped photosensitive material.
The side surface light-shielding member was manufactured by making a circle so as to be large and making a hole in the center so as to match the axis of the winding core.

(Backing material) Chemical pulp 100%, basis weight 7
LDPE is laminated to a paper containing 0 g / m ² , a thickness of 80 μm, and a carbon concentration of 9 mass% by an extrusion method so as to have a thickness of 15 μm.
A backing material was manufactured by making a circle as small as about 0 mm and making a hole 6 mm larger in the center than the hole made in the center of the side light shielding member.

(Terminal Label) An acrylic adhesive was applied to cas-coated paper having a basis weight of 230 g / m ² to prepare a terminal label.

(Splice Tape) A splice tape was prepared by applying a rubber-based adhesive to polypropylene (PP) having a thickness of 60 μm so as to have a thickness of 30 μm.

<Production of Rolled Photosensitive Material Package> The rolled photosensitive material package shown in FIG. 1 was produced by the following method using the various materials produced above. After joining the tapered end of the light-shielding leader to the paper end of the roll-shaped photosensitive material using splice tape, wrap the light-shielding leader around the outer periphery of the roll-shaped photosensitive material and attach the end label to the leading end of the reader. Prevents the shading reader from unwinding. On both sides of the roll-shaped photosensitive material, an acrylic solvent-type adhesive containing carbon black is applied in a thickness of 20 μm on the paper layer side of the side light-shielding member,
A member prepared by laminating the paper layer side of the backing material on this surface so as to be substantially concentric is adhered to the end face of the roll core of the roll-shaped photosensitive material so as to be substantially concentric. The portion protruding beyond the outer diameter of the material is folded along the outer peripheral edge of the roll-shaped photosensitive material onto the outer peripheral surface of the light-shielding leader covering the outer peripheral surface of the roll-shaped photosensitive material, and is adhered and fixed. The body was made.

(Evaluation method) After loading the roll-shaped photosensitive material package into a magazine and pulling out the leader, a developing process specified by Konica Corporation was performed without exposing the paper, and static fog was generated on a white paper. Table 1 shows the results of visually confirming the presence or absence.

The surface roughness was measured using a measuring instrument JIS-B060.
The values measured by Surf Co., Ltd., manufactured by Tokyo Seimitsu Co., Ltd. according to 1.

[0051]

[Table 1]

Example 2 When manufacturing the light-shielding reader used in Example 1,
As shown in Table 2, the surface specific resistance of the PE layer was changed by using a light-shielding reader that was changed by changing the amount of addition of an electrostripper (non-ionic) manufactured by Kao Corporation as an antistatic agent.
Other than the above, the roll-shaped photosensitive material package shown in Table 2 was produced in the same manner as in Example 1. In addition, the calendar processing of the light-shielding leader was not performed, and the L of the backing material of the used side protection member was used.
The surface resistivity of the DPE layer was 5 × 10 ¹³ Ω. After mounting the roll-shaped photosensitive material package on a magazine and pulling out the leader, the developing process specified by Konica Corporation was performed without exposing the paper, and the occurrence of static fog was visually checked on a white background paper. Table 2 shows the results. The measurement of the surface resistivity is a value measured by a tera ohm meter manufactured by Kawaguchi Electric Co., Ltd. according to JIS K6911.

[0053]

[Table 2]

Rolled photosensitive material package No. In the case of 207, the antistatic agent exuded on the surface of the light-shielding reader, and the experiment could not be performed.

It should be noted that the hot melt laminating method
DPE45μm / EVA20μm / PET50μm / E
A light-shielding reader having a layer configuration of VA 20 μm / LDPE 45 μm was prepared, and the above test was performed under the same conditions except that this product was used. As a result, the results shown in Table 2 were obtained.
EVA refers to an ethylene / vinyl acetate copolymer.

Example 3 When the backing material used in Example 1 was produced, LDPE was used.
As shown in Table 3, the surface resistivity of the layer was changed as shown in Table 3 by using a light-shielding reader changed by changing the amount of addition of an electrostripper (nonionic type) manufactured by Kao Corporation as an antistatic agent. The roll-shaped photosensitive material package shown in Table 2 was produced by the production method. The light-shielding reader was not calendered, and the LDPE layer of the light-shielding reader used had a surface resistivity of 3 × 10 ¹³ Ω. After mounting the roll-shaped photosensitive material package on a magazine and pulling out the leader, the developing process specified by Konica Corporation was performed without exposing the paper, and the occurrence of static fog was visually checked on a white background paper. Table 3 shows the results. The measurement of the surface resistivity is a value measured by a tera ohm meter manufactured by Kawaguchi Electric Co., Ltd. according to JIS K6911.

[0057]

[Table 3]

Rolled photosensitive material package No. In the case of 307, the antistatic agent exuded on the surface of the light-shielding reader, and the experiment could not be performed.

Example 4 The surface resistivity of the LDPE layer of the backing material and the LDPE layer of the light-shielding reader used in Example 1 were determined by adding the amount of an electrostripper (nonionic) manufactured by Kao Corporation as an antistatic agent. Was changed as shown in Table 4, and the other manufacturing methods were the same as those in Example 1 to produce a roll-shaped photosensitive material package shown in Table 4. After mounting the roll-shaped photosensitive material package on a magazine and pulling out the leader, the developing process specified by Konica Corporation was performed without exposing the paper, and the occurrence of static fog was visually checked on a white background paper. Table 4 shows the results. The measurement of the surface resistivity is a value measured by a tera ohm meter manufactured by Kawaguchi Electric Co., Ltd. according to JIS K6911.

[0060]

[Table 4]

Rolled photosensitive material package No. In the case of 408, the antistatic agent exuded on the surface of the light-shielding reader, and the experiment could not be performed.

[0062]

According to the present invention, a light-shielding leader is provided in a roll-shaped photosensitive material package having side light-shielding members made of a material different from that of the light-shielding leader on both side surfaces, and pulling out the light-shielding leader while tearing the peripheral edge of the side light-shielding member. Pull it out,
When the light-shielding state is released, static fog caused by the electrification of the light-shielding reader is eliminated, and the light-shielding reader can be used safely.

[Brief description of the drawings]

FIG. 1 is a schematic view of a roll-shaped photosensitive material package in which a side light-shielding member is folded over an outer peripheral surface side along an outer peripheral edge portion of a roll-shaped photosensitive material and is adhered and fixed to an outer peripheral surface of a light-shielding leader.

FIG. 2 is a schematic exploded view of the rolled photosensitive material package shown in FIG.

FIG. 3 is a schematic diagram illustrating a use state of a roll-shaped photosensitive material package.

FIG. 4 is a schematic sectional view of an example of a light-shielding reader manufactured by an extrusion lamination method.

FIG. 5 shows a schematic layer configuration of a side light shielding member and a backing material, and a backing material laminated on the side light shielding member.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 roll-shaped photosensitive material package 2 light-shielding reader 201 tapered portion 202 narrow width portion 203 wide width portion 3 side light-shielding member 301 portion folded over outer peripheral surface 302 edge portion 5 backing material 6 roll-shaped photosensitive material 601 peripheral edge portion 602 belt shape 9 Light shielding layer 11 Reinforcement layer 12, 14 Paper layer 13 Aluminum foil layer 15 Thermoplastic resin layer 16 Adhesive layer

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B65D 85/672 B65D 85/672 G03C 3/02 G03C 3/02 A

Claims (7)

[Claims] 1. A roll-shaped photosensitive material wound around a core, a light-shielding leader joined to an end of the roll-shaped photosensitive material and wound around an outer peripheral surface of the roll-shaped photosensitive material, A roll-shaped photosensitive material package having on both sides side light-shielding members that are folded over on the outer peripheral surface along the outer peripheral edge portion thereof, adhered and fixed to the outer peripheral surface of the light-shielding leader, and are separated from the light-shielding leader when opened. 3. The roll-shaped photosensitive material package according to claim 1, wherein the surface roughness of the light-shielding reader on the side in contact with the roll-shaped photosensitive material is 5 to 100 [mu] m (the maximum height specified in JIS B0601). 2. A roll-shaped photosensitive material wound around a core, a light-shielding leader joined to an end of the roll-shaped photosensitive material and wound around an outer peripheral surface of the roll-shaped photosensitive material, A roll-shaped photosensitive material package having side light-shielding members on both sides that are folded over on the outer peripheral surface side along the outer peripheral edge portion, adhered and fixed to the outer peripheral surface of the light-shielding leader, and separated from the light-shielding leader when opened. A rolled photosensitive material package, wherein the light-shielding reader has a surface resistivity of 1 × 10 ⁵ to 1 × 10 ¹³ Ω on the side in contact with the roll-shaped photosensitive material. 3. A roll-shaped photosensitive material wound around a core, a light-shielding leader joined to an end of the roll-shaped photosensitive material and wound around an outer peripheral surface of the roll-shaped photosensitive material, A roll-shaped photosensitive material package having side light-shielding members on both sides that are folded over on the outer peripheral surface side along the outer peripheral edge portion, adhered and fixed to the outer peripheral surface of the light-shielding leader, and separated from the light-shielding leader when opened. A roll-shaped photosensitive material package, wherein the side surface light-shielding member has a surface resistivity of 1 × 10 ⁵ to 1 × 10 ¹³ Ω on a side contacting the side surface of the roll-shaped photosensitive material. 4. The roll-shaped photosensitive material package according to claim 3, wherein the light-shielding reader has a surface resistivity of 1 × 10 ⁵ to 1 × 10 ¹³ Ω on the side in contact with the roll-shaped photosensitive material. body. 5. The light-shielding reader according to claim 1, wherein the light-shielding leader is made by a hot melt laminating method.
Item 14. A roll-shaped photosensitive material package according to item 8. 6. The roll-shaped photosensitive material package according to claim 1, wherein the light-shielding leader is made by an extrusion lamination method. 7. The side light-shielding member is a multi-layered material including paper as a base material and one aluminum foil layer.
7. The roll-shaped photosensitive material package according to any one of items 1 to 6.