JP3044392B2 - Magazine for photographic photosensitive materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magazine for photographic light-sensitive material having a light-shielding member, and more particularly to a magazine for photographic light-sensitive material in which a light-shielding member having a pile attached to an entrance / exit portion of a photographic light-sensitive material of a magazine body is improved. About.

[0002]

2. Description of the Related Art At present, photographic light-sensitive materials are used in a variety of magazines for photographic light-sensitive materials so that they can be handled in bright places except for processes such as exposure and development processing. The most commonly known magazine for photographic light-sensitive materials is patrone for 135-size films. As shown in FIG. 1, this 135-size film cartridge has one end attached to the shaft of a spool shaft 1 and a film 2 wound in a cylindrical shape with the emulsion surface inside, and the other end having a film entrance 3 From the outside. The magazine outer cylinder 4 of this patrone has a cylindrical shape made of a plastic or metal plate, and a film entrance 3 is formed at a joint portion of both ends. Light-shielding members 5a and 5b are adhered to the film entrance 3 so that light does not enter the inside of the magazine outer cylinder 4. The film cartridge loaded in the camera draws out the film 2 and shoots, and the shooting ends. And the film 2 are rewound into the film cartridge, taken out of the camera and developed.

[0003] As another magazine for photographic light-sensitive materials, there is a film cartridge, which is disclosed in JP-A-62-235946.
No. 62-23040, No. 62-57255, JP 60-15605
It is also used for wide photographic light-sensitive materials as described in No. 8, etc. FIG. 2 shows a typical example.

In FIG. 2, a package body 21 includes an inner body 22 and an outer body 23 enclosing the inner body 22. A supporting member 2 capable of supporting both ends of the winding tube 24 of the film 2
The support members 25 and 26 are rotatably supported by a stack of cardboard and punched in a disk shape, but the material is not limited. As long as the drawing load is not unnecessarily large, it may be fixed. The package body 21 is provided with an outlet 27 for the film 2, and the outlet 27 is provided with a light shielding means 28. Next, the light shielding means 28 will be described. Passage forming members 29a and 29b for passing the film 2 are installed facing the inner surface of the outlet 27, and a light shielding cloth 30a is provided on the opposing surfaces of the passage forming members 29a and 29b to prevent external light from entering. , 30b are attached. The passage forming members 29a and 29b are preferably formed in an oblique shape as shown in view of light shielding, and the passage forming members 29a and 29b are preferably reinforced so as not to be deformed by a working method. Normally, the leading end of the film 2 is seen through the outlet 27, and preparation for exposure is made.

[0005] Normally, in order to prevent light from entering the inside of the magazine at the film entrance / exit portion of the magazine for photographic light-sensitive materials, to facilitate taking-in / out of the light-sensitive material, a scratch is formed on the back side surface of the film when the light-sensitive material is taken in / out. A light-shielding member having a pile is stuck so as not to be attached.

In recent years, with the spread of high-speed automatic winding and rewinding cameras, static electricity generated by contact between a light-shielding member attached to the entrance and exit of a magazine for photographic photosensitive material and a film during operation of the camera is discharged. However, only the discharge portion is exposed to light, and various contaminated portions such as dendrites, clouds, and cotton may appear due to the development process. (Hereinafter, these contaminated portions are referred to as “static marks”.) In order to improve such troubles caused by electrostatic charge and discharge, Japanese Patent Publication No. 62-40696 discloses a flocculent polymer containing an inorganic conductive material. A technique using conductive fibers dispersed in a fiber-forming polymer in a streak form is also described in
In Japanese Patent Publication No. 18 (JP-A-18), a technique using a conductive fiber having a conductive film formed on the surface of a chemical fiber is reported. Also, Japanese Patent Application
No. 63-245808 discloses a technique using a composite fiber,
Nos. 41 and 62-286042 describe techniques using various antistatic agents. However, the static mark cannot be completely prevented only by the neutralizing action of the normal conductive fiber by corona discharge.

Further, the film itself has been improved in order to reduce even a small amount of electrostatic charge caused by contact with the light shielding member. For example, the film may be subjected to an antistatic treatment, an antistatic layer may be provided on the back surface of the film, or the sliding property may be improved.

[0008]

However, the tendency of recent films is, for example, ISO1000, ISO1600, IS
Those with extremely high sensitivity, such as O3200, and more high-quality ones have come to be used. For the purpose of improving mechanical strength and dimensional stability, a polyester film which is excellent in mechanical strength and dimensional stability but easily generates static electricity has been used as a base for photosensitive materials. Therefore, when a camera having an automatic winding and rewinding mechanism is used only with the conventional means for preventing the film from being charged, the occurrence of static marks during high-speed photographing cannot be completely prevented.

The present invention has been made in view of the above points, and an object of the present invention is to impart smoothness to a pile constituting a light-shielding member and increase a contact area in high-speed photographing and high-speed storage of a photographic light-sensitive material. Another object of the present invention is to provide a magazine for a photographic light-sensitive material capable of suppressing the generation of static electricity by reducing the frictional force with the film and thereby preventing the generation of static marks.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magazine for a photographic material in which a light-shielding member having a base cloth and a pile is attached to an entrance and exit of the photographic material. Alternatively, the present invention is achieved by a magazine for photographic light-sensitive materials, which has a filament having a cross-sectional shape including at least a part of a concave portion, and contains or adheres a polyorganosiloxane and / or a modified product thereof.

Hereinafter, the present invention will be described in more detail.

The base fabric thread used in the light shielding member according to the present invention is preferably a synthetic fiber made of a thermoplastic resin. As the thermoplastic resin, for example, polyethylene, polypropylene,
Polyolefins such as vinyl chloride and polystyrene, polyamides such as nylon 6, nylon 66 and nylon 12, polyesters such as polyethylene terephthalate and polybutylene phthalate, polyvinyl alcohols, polyvinylidene chloride, polyvinyl chloride and polyacrylonitrile And poly (vinylidene cyanide), polyfluoroethylene and polyurethane. The above-mentioned thermoplastic resins may be used in combination of two or more kinds, but a thermoplastic resin having a fiber-forming property is particularly preferable.

As the pile constituting the light-shielding member according to the present invention, it is preferable that the photographic light-sensitive material is stored in a low moisture state, and the pile is mechanically used in the light-shielding member manufacturing process or at the time of sticking the light-shielding member to the magazine. Considering that strength is required, it is preferable to use synthetic fibers having a lower moisture content than natural fibers and excellent physical properties. It is preferable that the same thermoplastic resin as the base fabric yarn is used for the synthetic fiber used for the pile yarn. In the present invention, the pile yarn is usually a bundle of several tens of single fibers (hereinafter sometimes referred to as “filament”), and the tip of the pile yarn, that is, the portion where the pile comes into contact with the film is a single yarn. Each fiber is in a state of being separated.

In order to increase the contact area between the pile and the film constituting the light-shielding member and to disperse the frictional force, a method of increasing the implantation density of the pile and using as many filaments as thin as possible is used. However, the use of a large number of fine filaments leads to high costs, the filaments are liable to be cut, and the production stability cannot be expected. However, it is difficult to make the height constant, so that there is a disadvantage that the light shielding is not complete. In the present invention, a pile having a cross-sectional shape including at least part of a flat portion and / or a concave portion is used as a pile constituting a light shielding member.

In the present invention, it is preferable that the filaments of the nap fibers are mixed or copolymerized with a leveling agent, or that the filaments are processed with resin and adhered. Usually, examples of the leveling agent include polyalkylene ethers, esters or metal salts thereof, and fluorine compounds. In the present invention, at least a polyorganosiloxane excellent in processability without adversely affecting a photographic material or the like is used. As polyorganosiloxane, There is no particular limitation as long as it has the basic skeleton structure of the above. However, it is preferable to use dimethylpolysiloxane as a main component and to substitute a methyl group with an alkyl group (for example, one having 1 to 12 carbon atoms) or an aryl group. In order to improve processability and heat resistance, those having an amino group, an epoxy group, a hydroxyl group, an alkoxy group, a carboxyl group, or the like on a side chain or a terminal may be used. However, when the resin is applied to the pile by applying a resin process, it is necessary to select a resin in consideration of water dispersibility, film forming property, film strength, and solvent resistance. For example, amino-modified silicone, epoxy-modified silicone, polydiorganosiloxane diol having a hydroxyl group in a side chain or those having an unsaturated bond are preferable because they can be easily crosslinked by heating.
The amount of the smoothing agent used is 0.1 to
It is preferably 1% by weight, and preferably 0.1 to 3% by weight when the resin is applied to the pile by resin processing. The use of a leveling agent can reduce the coefficient of friction to 80% or less without addition.

The smoothness of the fiber is evaluated by the coefficient of friction measured as follows. The sample (filament) was thoroughly washed with a benzene / methanol (1/1) mixed solution,
Heat treated at 0 ° C for 20 minutes is used. As the friction body, a round rod having a diameter of about 1 cm and wound with a film is used. The yarn is run at a speed of 15 cm / sec while making contact with the film at 180 °, and the tensions T ₁ and T ₂ before and after the friction body are measured (adjust T ₁ to 10 g with a tension adjuster). The friction coefficient is calculated by the following equation (1).

[0017]

(Equation 1) The pile yarn preferably contains 0.1% by weight or more of an antistatic fiber or a conductive conjugate fiber having an electric resistivity of 10 ¹⁰ Ω · cm or less. If the mixing ratio of the antistatic fiber or the conductive composite fiber having an electric resistivity of 10 ¹⁰ Ω · cm or less is less than 0.1% by weight, static electricity removal and discharge of the charged static electricity cannot be sufficiently performed. Electric resistivity
An antistatic fiber or a conductive composite fiber of 10 ¹⁰ Ωcm or less is generally prepared by a known method, for example, by mixing, adsorbing, or adhering an antistatic compound and / or a conductive substance to the thermoplastic resin described above. Alternatively, it can be obtained by copolymerizing an antistatic compound with the above-mentioned thermoplastic resin. The electrical resistivity of the fiber is measured at 25 ° C. and 43% RH by applying a DC voltage of 1000 V.

As the antistatic compound, a known antistatic compound having hydrophilicity or surface activity as described in "Practical Handbook of Additives for Plastics and Rubber" published by Chemical Industry Co., Ltd. 1970 is used. . For example, alkyl ether ester type, alkyl amine type, phosphate ester type, alkyl ether type and the like can be mentioned. The compounding amount or copolymerization amount is usually 0.2 to 6% by weight,
0 a ⁶ to 10 of ¹⁰ Omega · cm thermoplastic resin.

Examples of the conductive substance include known conductive carbon black, metal, conductive metal oxide and metal compound,
Alternatively, particles having these films can be used. The particle size of the particles having the coating is usually 2 μm or less, and preferably 0.5 μm or less in order to prevent damage to the photosensitive material. The amount of the conductive substance used when mixed with the antistatic compound is usually 3 for carbon black.
4545 wt%, and usually 10-85 wt% for metals, conductive metal oxides and metal compounds. When the charge is removed by corona discharge by imparting conductivity to the thermoplastic resin, that is, when the electrical resistivity of less than 10 ⁶ Ωcm is added, the amount of the conductive substance to be added is 10 to 45 in carbon black. %, Preferably 15 to 40% by weight, and 30 to 85% by weight, preferably 50 to 80% by weight for metals, conductive metal oxides and metal compounds. When imparting conductivity, moldability and physical properties are reduced as it is, and therefore, it is preferable to use a composite fiber bonded to a non-conductive protective component resin.

Further, at least 30% by weight of the pile used in the present invention has a flat portion and / or a concave portion in cross section,
In addition, the filament is preferably a filament containing or having a polyorganosiloxane and / or a modified product thereof attached. Here, the flat portion is a circumscribed circle radius of 1.5 in the fiber cross section.
It refers to an outer peripheral portion having a radius of curvature of twice or more (preferably 2.0 times or more). A fiber having such a shape can be obtained by using a spinneret having a known cross section in a spinning method such as melt spinning, wet spinning, and dry spinning. For example, FIG. 3-A or FIG. 3-F by a T-shaped base, FIG. 3-C by a rectangular base, FIG. 3-D, Y by two adjacent circular bases
It can be manufactured by spinning into a desired cross-sectional shape as shown in FIG. FIG. 3-G
Conductive thermoplastic resin 91 and non-conductive protective resin 92 such as
(Preferably, a thermoplastic resin having antistatic properties is used.)
The composite fiber and the like are spun by using a die for joining and discharging a plurality of polymers by a known composite spinning device. Also as shown in Figure 3-H for example, electrical resistivity 10 ¹⁰
First, a composite fiber having a circular cross section in which a thermoplastic resin (101) of Ω · cm or less and a thermoplastic resin 102 which is easily decomposed or dissolved by a solvent is spun, and then the thermoplastic resin 102
By removing or decomposing or dissolving with a solvent,
A fiber having a concave portion and / or a flat portion can also be obtained.

In the present invention, it is preferable that 30% by weight or more of the pile is composed of such specific fibers, and it is further preferable that 50% by weight or more of the pile is composed of such specific fibers. This can reduce the frictional force of the pile in contact with the film and significantly reduce the triboelectric charge.

The light-shielding member having a pile according to the present invention comprises:
For example, JP-A-62-27734, Japanese Patent Application No. 60-267000, JP-A-6-27734
No. 2-201432, No. 59-104143, No. 51-127737, No. 57
Nos. -32948, 45-86944, JP-A-60-208751, 54-36
No. 923 and No. 53-105222. The ends of the yarns for the base cloth and the pile used in the light-shielding member according to the present invention and the surface of the light-shielding member are described in JP-A-62-283.
No. 331, No. 62-286041, No. 62-286042, JP-B-46-2821
No. 8, the processing described in JP-B-53-25893 or the like may be applied.

As a method of sticking the light-shielding member used in the present invention to a metal magazine body, Japanese Patent Application Laid-Open No. 49-96049,
53-105219, 53-105220, 53-105221, 54-49
No. 32, JP-A-61-233738, JP-A-62-27733, 61-21
The method described in No. 0347 can be applied. In the case of a magazine other than a metal magazine, it can be attached by any known bonding method using a solvent-type adhesive, a double-sided adhesive tape, or the like. The positions where these light-shielding members are attached may be provided not only at the entrance / exit portion of the film of the magazine but also throughout the interior of the magazine.

Examples of the metal forming the magazine body of the magazine for photographic light-sensitive materials of the present invention include, for example, JP-A-62-14002.
The steels, zincs, aluminums, coppers or alloys thereof described in No. 1 are used. In addition, the surface of these metals can be subjected to metal surface treatment by a phosphate film formation method, an iron oxide film formation method, a chromate film formation method, a chromic acid oxide film formation method, a chromate diphosphate phosphate film formation method, or the like. May be applied.

When the magazine body is formed of paper, paperboard, cardboard or the like is used. Also, the surface of the metal
JP-A Nos. 60-26061, 60-26062, 60-26063, 61
-113643, Japanese Patent Application No. 60-75207, and the like. Paints preferably used,
Examples of inks include alkyd resin, amino-alkyd resin, vinyl resin, acrylic resin, epoxy resin, polyurethane resin, polyester resin, various rust preventive paints, water-based paints, paints such as cellulose derivatives, inks, etc. Is mentioned. In addition, JP-A-60-26061
No. 60-26062, No. 60-26063, No. 61-113643 and the like, and can be used in combination.

In the present invention, a filler can be used so that the pile used for the light shielding member does not fall off from the base cloth and the adhesive does not penetrate into the pile portion. As fillers used in the present invention, for example, JP-A-60-118472, JP-A-62-27733, Japanese Patent Application No. 60-2113
No. 72, Japanese Patent Application No. 60-195635, and JP-A-63-49756.

Examples of the adhesive used for sticking the light shielding member having the pile and the magazine body include JP-A-63-123041, JP-A-63-49756, and JP-A-63-124048.
No. 61-289347 and polyolefins such as polyethylene, vinyl acetate copolymers such as ethylene-vinyl acetate copolymer, acrylate copolymers such as ethylene-ethyl acrylate and ethylene-isobutyl acrylate, nylon 6, Nylon 66, Nylon 10, Nylon 12, N-methoxymethylated nylon and other polyamides, terephthalic acid and other polyesters, polyvinyl butyral, polyvinyl acetate, acetate, methyl cellulose, acetate butyrate and other cellulose derivatives. System, polymethacrylates such as polymethyl methacrylate, polyvinyl ethers such as polyvinyl methyl ether, polyurethanes, polycarbonates, styrene block copolymers such as styrene-ethylene-butylene-styrene, styrene Emissions butadiene, isoprene,
Examples thereof include one or a mixture of two or more selected from synthetic rubbers such as butyl rubber, special rubbers not included therein, and acrylic copolymers not included above.

In the present invention, for example, as described in Japanese Patent Application No. 63-29825, conductive carbon black or carbon fiber powder is mixed into a filler resin and / or an adhesive to make the resin conductive. Preferably.

When the light shielding member is attached to the magazine of the paper cartridge, a commercially available double-sided adhesive tape may be used.

[0030]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

Preparation of Pile Yarn (Examples 1-5, Comparative Examples 1-2) Example 1 Ethylene oxide / propylene oxide adduct of glycerin (addition polymerization ratio (weight) 80/20, average molecular weight 7000)
Products of dimethyl terephthalate and polymethylphenylsiloxane (Shin-Etsu Chemical, KF54) were quantitatively injected into a nylon 66 melt at 2.0% by weight and 0.3% by weight using a gear pump, and were uniformly mixed with a static mixer 20 elements. The obtained polymer composition was melt-spun at 285 ° C. and 900 m / min using a die having a cross-sectional shape shown in FIG. 4-a, and then stretched at 3.25 times to produce antistatic fibers of 288 denier 96 filaments. did. This fiber is 4.6g / d, 41% strong elongation, 5 × 10 ⁷ Ω
It had an electric resistivity of 0.3 cm, a friction coefficient of 0.38 (0.59 when no silicone oil was added), and a cross-sectional shape as shown in FIG. 3-A (the ratio of the radius of curvature of the flat portion to the radius of the circumscribed circle was 1.6).

Example 2 An antistatic fiber having a cross-sectional shape as shown in FIG. 3-C (a flat portion with respect to the radius of a circumscribed circle) was formed in the same manner as in Example 1 except that a die having a cross-sectional shape shown in FIG. Radius of curvature ratio of 2.3)
It was created.

Example 3 An antistatic fiber having a cross-sectional shape having two concave portions as shown in FIG. 3-D was prepared in the same manner as in Example 1 except that a die having a cross-sectional shape shown in FIG. 4-c was used. did.

Comparative Example 1 A nylon 66 fiber was prepared using a die having a circular cross section (pore diameter 0.25 mm) and not mixing the antistatic agent and the smoothing agent.

Comparative Example 2 A circular anti-static fiber having a circular cross section was prepared in the same manner as in Comparative Example 1 except that a die having a circular cross section was used and a smoothing agent was not mixed.

Example 4 A nylon 66 fiber having a flat cross-sectional shape was prepared in the same manner as in Example 3 except that the antistatic agent was not mixed.

Next, these Examples 1 to 4 and Comparative Example 1
Fibers No. 2 to No. 2 were staples having a fiber length of 51 mm, and spun yarns of 60/2 were used as pile yarns.

[0038] Filling resin Mixed resin of acrylic resin, ethylene vinyl acetate copolymer resin AX-2433 (manufactured by Daicel Chemical Industries, Ltd.) and acrylic resin W-6008 (Diakint Industries, Ltd.) (8: 2) Using the above-mentioned materials, the sample was stuck on a cartridge for 135 film size, and the film was used as a sample. The film used was a high-sensitivity film. Each sample was checked for the presence of a static mark according to the following test method. Table 1 shows the results.

Example 5 Except for not mixing polymethylphenylsiloxane,
After producing flat antistatic fibers in the same manner as in Example 3,
Similarly, a light shielding member was prepared. Then, amino-modified polydimethylsiloxane / epoxysilane (adhesion amount 0.3 /
(0.1% by weight) was applied to the pile surface of the light-shielding member using a roller, and then subjected to a drying heat treatment at 120 ° C. for 3 minutes. Thereafter, a sample was similarly prepared, and the presence or absence of a static mark was examined in accordance with the following test method. Table 1 shows the results.

Test method Test conditions: Camera used Nikon F-1 motor drive Film feed speed 6 frames / sec Temperature and humidity conditions: 5 ° C./10% RH After filming, the film was developed and static marks were generated. The presence or absence was determined by the following criteria.

Judgment Criteria: X: Occurrence is clearly observed in the screen △: Occurrence of static mark is slightly observed O: Almost no occurrence of static mark is observed ◎: Occurrence of static mark is observed at all Can't

[0042]

[Table 1] As is clear from Table 1, the light-shielding member using the pile fiber according to the present invention was found to be effective in preventing the occurrence of static marks. Also, the filler resin used
Acrylic resin type W-6008 DIABOND INDUSTRY CO., LTD.
Made, acrylic / styrene resin GD-11 Kanebo N
SC / Ltd-styrene / butadiene resin LX-41
5A Nippon Zeon Co., Ltd., ethylene vinyl acetate-based vinyloglue B-11, vinyloglue B-3L, manufactured by Tohatsu Kasei Kogyo Co., Ltd., and olefin-based cranbetter X-1430 manufactured by Kurashiki Boseki Co., Ltd. Polyurethane L-Fan UH203 Nippon Matai Co., Ltd., L-Fan UH2
04 Nippon Matai Co., Ltd., polyamide L-Fan N
T100 Nippon Matai Co., Ltd., ELFAN TN120 Nippon Matai Co., Ltd., polyester SP-170 Nippon Synthetic Chemical Co., Ltd., LP-011 Nippon Synthetic Chemical Co., Ltd.
PES-120 A similar test was performed instead of Toa Gosei Chemical Industry Co., Ltd. and adding 10% by weight of Mitsubishi Chemical Industry Co., Ltd. # 10 as conductive carbon to the resin. Indicated.

Preparation of Pile Yarn (Examples 6 to 9) Example 6 Nylon 66 containing 35% by weight of conductive carbon black
A conductive thermoplastic resin 91 made of the above and 0.2% by weight of the polymethylphenylsiloxane used in Example 1 were quantitatively injected into a melt of nylon 66 with a gear pump and uniformly mixed with a static mixer 20 element. After joining with the protective resin 92, 285 ° C., 9
Melt conjugate spinning was performed at 00 m / min to obtain an undrawn conjugate fiber (CF4) having 65 denier and 6 filaments. However, two filaments are spun mixed fibers composed of conductive fibers in the bonding form shown in FIG. 3-G and the remaining four filaments composed of fibers having the shape as shown in FIG. 3-C.

Next, a flat antistatic anti-stretched yarn (AF4) obtained in the same manner as in Example 3 except that 260 denier and 36 filaments are used, and the yarn is heat-stretched. A denier 42 filament mixed yarn was prepared.

Example 7 A flat unstretched yarn (AF5) obtained in the same manner as AF4 except that the antistatic agent was not mixed was combined with CF-4, stretched with heat, and entangled with air. A mixed yarn of 100 denier 42 filaments was prepared.

Example 8 Except that the antistatic agent was not mixed and had a circular cross section,
The undrawn yarn (AF6) obtained in the same manner as AF4 was converted to CF-4.
Then, the resultant was hot-drawn, and then entangled with air to prepare a mixed fiber of 100 denier and 42 filaments.

Using the mixed yarns of Examples 6 to 8 for a pile, light-shielding members were prepared according to the following conditions.

Example 9 A light-shielding member was prepared according to the following conditions by using the mixed yarns of Example 6 and Example 8 in a pile at a ratio of 1: 1.

Example 10 A light-shielding member was prepared according to the following conditions by using the mixed yarns of Example 6 and Example 8 in a pile at a ratio of 1: 3.

[0050] Further, in order to prevent pile removal, an acrylic / styrene-based resin (GD-11, manufactured by Kanebo NSC Co., Ltd.) was used as a sealing resin at 40 g / m ² , and an olefin-based adhesive (# 750).
0, manufactured by Hirodyne Industrial Co., Ltd.) to a thickness of 70 μm, and then subjected to a dyeing / finishing process to produce a light-shielding material.

Then, the film was attached to the entrance of the photographic film magazine in the same manner as in Examples 1 to 3, and the presence or absence of a static mark was examined by the same test method and criteria as in Example 1. Table 2 shows the results.

[0052]

[Table 2] Example 11 Nylon whose filament cross-sectional shape is shown in FIG. 3-A, FIG. 3-C, FIG.
66 pile yarns (sample Nos. 1, 2, 3, and 4) were prepared, and light shielding member cloths were prepared under the following conditions.

[0053] After performing the shearing and dyeing treatment steps on the light-shielding member cloth, the pile surface is dispersed in water with a phosphate compound-based antistatic agent (Electro-Stripper K, manufactured by Kao Corporation) and the silicon-based smoothing agent used in Example 5. The solution was treated.

An acrylic / styrene resin system (GD-11, Kanebo NSC) to which 20% by weight of conductive carbon black has been added in order to further prevent pile removal.
Co., Ltd.) as a sealing resin, and a light-shielding material No. 1 to
4 were prepared.

The surface of the obtained light-shielding member was brought into frictional contact with the film surface (load: 100 g / m ² , speed: 10 m / min), and the charged voltage of the film was measured. Table 4 shows the results.

[0056]

[0057]

[Table 4] As is evident from Table 4, the light-shielding member using the pile fiber according to the present invention reduced the charged voltage of the film, and generation of static marks was not recognized.

[0058]

As described in detail above, the magazine for photographic light-sensitive material of the present invention is excellent in static electricity elimination effect due to static electricity elimination and suppression of static electricity generated at the time of high-speed shooting and high-speed storage of the photosensitive material, The generation of static marks was prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a magazine for photographic light-sensitive materials.

FIG. 2 is a partially cutaway perspective view of a cartridge type magazine for photographic light-sensitive materials.

FIG. 3 is a diagram showing an example of a cross-sectional shape of a fiber that can be used for an A to H pile.

FIG. 4 is a sectional view of a die for spinning ac fibers.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Spool shaft 2 Photosensitive material 3 Photosensitive material entrance / exit 4 Outer cylinder 5a, 5b Light shielding member 21 Package body 22 Inner body 23 Outer body 24 Winding tube 25, 26 Support member 27 Outlet 28 Light shielding means 29a, 29b Passage forming member 30a, 30b Shielding cloth 91 Conductive thermoplastic resin 92 Protective component resin 101 Thermoplastic resin decomposed and removed by alkali treatment 102 Thermoplastic resin remaining by alkali treatment

Continuation of the front page (56) References JP-A-62-235946 (JP, A) JP-A-62-23040 (JP, A) JP-A-60-156058 (JP, A) JP-A-62-286041 (JP) JP-A-62-260042 (JP, A) JP-A-4-124657 (JP, A) JP-A-2-6556 (JP, A) JP-A-63-318553 (JP, A) JP-A-2-242855 (JP, A) JP-A-63-282379 (JP, A) JP-A-63-175172 (JP, A) JP-A-61-19877 (JP, A) JP-A-2-261835 (JP, A) A) JP-A-2-227482 (JP, A) JP-A-1-287169 (JP, A) JP-A-62-57255 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) G03C 3/00

Claims (2)

(57) [Claims] 1. A magazine for a photographic light-sensitive material in which a light-shielding member having a base cloth and a pile is stuck to an entrance and exit of the photographic light-sensitive material, wherein the pile has a cross-sectional shape including at least a part of a flat portion and / or a concave portion. A magazine for photographic light-sensitive materials, comprising a filament and containing or adhering a polyorganosiloxane and / or a modified product thereof. 2. The magazine according to claim 1, wherein the pile has antistatic fibers or conductive composite fibers.