JPS6010849Y2 - laminated film - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a laminated film using an insulating organic polymer film as a base material, and provides a laminated film that prevents generation of static electricity during film operation.

Conventionally, there have been many laminated films using a base film made of an insulating organic polymer, and the one shown in FIG. 1 is known as a typical example of the structure.

In the figure, 1 is a film made of a flexible insulating organic polymer, 2 is a conductive layer, and 3 is a dielectric layer and/or photoconductive layer made of an organic resin having a charge retention function.

However, in conventional laminated films based on such insulating organic polymer films, static electricity is generated during film operations such as winding and handling before and after coating the dielectric layer and/or photoconductive layer. This caused the adhesion of dust and the like to the molecular film, which not only impaired the commercial value of the laminated film, but also caused the following problems.

(1) Pyramid-shaped unevenness occurs in the laminated film due to dust mixed in the roll film.

(2) When the laminated film is loaded onto a drum or the like and used, the drum or the like may be scratched due to dust or the like.

(3) When used as a mask film for copying machines, facsimile machines, etc., scratches occur due to brushes and blades during cleaning.

(4) It is difficult to control the air gap when non-contact electrodes are used in electrostatic recording equipment.

(5) Dust and the like may adhere to or be mixed into the dielectric layer and/or the photoconductive layer, causing a so-called lightning phenomenon, for example, when corona is applied, resulting in problems such as missing images.

As a result of the above-mentioned problems, the mask film has to be replaced more frequently, which is a major practical obstacle, especially in the case of equipment using plain paper, where speeding up is desired.

The purpose of this invention was made in view of the above drawbacks,
In particular, it is an object of the present invention to provide a laminated film that does not attract dust due to static electricity and can withstand long-term use in copying machines and the like.

In order to achieve the above object, the present invention has the following structure, in which each layer of an insulating organic polymer film A1, a conductive layer B, a dielectric layer and/or a photoconductive layer C is arranged in the order of B/A/B/C. It is characterized by a laminated film formed by laminating layers.

Next, one embodiment of the present invention will be described based on the drawings.

FIG. 2 is a sectional view of the laminated film of the present invention.

In the figure, 11 is an insulating organic polymer film A112
The conductive layer B113 is a dielectric layer and/or a photoconductive layer C, and the same figure shows a laminated layer in which each layer is laminated in the order of 12/11/12/13, that is, in the order of B/A/B/C. It shows the film.

Preferred insulating organic polymers constituting the insulating organic polymer film A of the present invention include polyester polymers such as polyethylene terephthalate, polybutylene terephthalate, polyethylene-2,6-naphthalene dicarboxylate, polyethylene, polypropylene, etc. Polyolefin 2, so-called nylon-6, nylon-1
Polyamides such as 2, polyimides having five-membered ring imide bonds in the polymer main chain, cellulose derivatives such as cellulose esters, polystyrene, polycarbonates, acrylic ester copolymers, methacrylic ester copolymers,
These include polyvinyl chloride, polyether, polyester ether, etc., and include, but are not limited to, copolymers and blends thereof.

These insulating organic polymers can be stretched, especially biaxially.

Stretching improves mechanical properties, thermal properties, optical properties, dimensional stability, etc., and may be preferable.

The conductive layer B is formed by plating, vacuum deposition, chemical vapor deposition, sputtering, coating, lamination, or the like.

Preferred compositions constituting the conductive layer B include, for example,
Metals and/or metals described in Utility Model Publication No. 1677
Alternatively, metal compounds, inorganic conductive pigments such as carbon black and graphite, polymer electrolytes such as quaternary ammonium salts, sulfonates, and polyalcohols can be effectively used, but the present invention is not limited to these.

Further, the B layer may have the same composition or different compositions between the upper and lower layers with the A layer interposed therebetween, or may be a laminate of two or more layers.

The surface resistance value of the B layer depends largely on the characteristics of the 0 layer, so it cannot be determined unconditionally, but it is preferably 10 12 Ω/or less, and for the B layer sandwiched between the A layer and the 0 layer, the surface resistance value is 10 8 Ω. / mouth or less is desirable.

Preferred compositions constituting the dielectric layer and/or photoconductive layer C include, for example, polyester, polyether,
Polycarbonate, polyamide, polyurethane, polyimide having a five-membered ring imide bond in the polymer main chain, acrylic ester copolymer, methacrylic ester copolymer,
Insulating resins such as polystyrene-butadiene copolymer, vinyl acetate-vinyl chloride copolymer, polyvinyl acecool, chlorinated polyolefin, ethylene-vinyl acetate copolymer, alkyd resin, xylene resin, ketone resin, epoxy resin, etc. 1973-111734 and Utility Model No. 111734
-53443, and inorganic compounds such as cadmium sulfide, zinc oxide, selenium, anthracene, benzidine, oxazole, triazine, pyrazoline, azomethine, anthraquinone and its derivatives, and even polyinden , polyacenaphthene, polyvinylquinoline, polyvinylcarbazole and its derivatives, and many other photoconductive layers.

These may be used alone or in a mixed system of two or more.

It may also contain a polymer binder. In the present invention, inorganic and/or
Alternatively, organic particles may be added.

In the present invention, the method of adding the 0 layer includes film attachment, brush coating, dip coating, knife coating, roll coating, spray coating, flow coating, rotary coating (spinner, whaler, etc.), etc. Although any coating method can be easily used, each method is effective regardless of the method.

The thickness of the zero layer is not particularly limited, but is preferably 1 to 100 microns.

Further, a protective layer may be provided on the zero layer.

In this invention, B/A,
Other polymers or the like may be added between A/B and B/C for the purpose of improving adhesion, but the thickness thereof is preferably 20 μm or less, particularly preferably 5 μm or less.

Although the present invention is characterized by the above-mentioned laminated film, a plasticizer can be used in the same way as with general polymeric materials in order to improve the mechanical strength of the zero layer.

As the plasticizer, for example, chlorinated paraffin, chlorinated biphenyl, phosphate plasticizer, phthalate plasticizer, etc. can be used.

An embodiment of the present invention will be described below based on an example.

However, the present invention is not limited to this embodiment.

Example 1 1ooo of AI was applied to one side of a 100μ biaxially oriented polyethylene terephthalate film (Toshiku+Eki “Lumirror”)
Vacuum evaporated.

Furthermore, PT was applied to the opposite side of the A1 vapor deposition surface of the biaxially oriented polyethylene terephthalate film with a surface resistance value of 5XICF'.
A conductive film was obtained by sputtering to give a value of Ω/mm.

On top of this conductive film PT, a paint prepared by dissolving polycarbonate resin in a 1/1 mixed solvent of monochlorobenzene/dichloroethane so that the solid content is 10% is applied so that the film thickness after drying is 5μ. It was coated using a roll coater, dried at 150°C for 1 minute, and then continuously wound up.

An electrostatic recording film with excellent workability and almost no adhesion of dust was obtained.

Comparative Example 1 A laminated film having the same structure as in Example 1 except for the absence of the A1 vapor deposited layer was produced, but due to dust that adhered during film transportation, countless pyramid-shaped irregularities were generated on both sides of the laminated film, which caused electrostatic recording. It was inappropriate as a film.

Example 2 A conductive film was obtained by sputtering P on both sides of a 50 μm biaxially oriented polyethylene terephthalate film (Toshikushiki Kirimirror) so that the surface resistance value was 2×ICPΩ/hole.

An adhesion promoting layer containing an acrylic ester copolymer as a main ingredient was provided on one side of the conductive film so that the film thickness after drying was 1 μm, and then 100 parts by weight of polyvinicarbazole, 2.4.7- h 5 parts of dinitrofluorenone and 5 parts of polycarbonate resin are dissolved in a mixed solvent of tetrahydrofuran/dichloroethane = 1/1 so that the solid content is 10%. After drying, the film thickness becomes 15μ. The film was coated using a roll coater as described above, dried at 100'C for 5 minutes, and then continuously wound up.

The photosensitive mask thus obtained was loaded onto an A1 drum, and an image forming test was conducted using a commercially available copying machine.

As a result, there were no missing images and no scratches caused by the blade during cleaning.

Comparative Example 2 A photosensitive mask having the same structure as in Example 2 was manufactured except that Pa was sputtered only on one side of the biaxially oriented polyethylene terephthalate film (Toshiki Kikki "Lumirror").

This film was loaded into the A1 drum in the same manner as in Example 2,
An image forming test was conducted using a copying machine.

As a result, the drum was not only scratched due to dust that adhered to the back surface during film transport, but also the mask film was scratched by the plate during cleaning, and had to be replaced more frequently than the mask film of Example 2. Ta.

Further, due to dust adhering to or entering the photoconductive layer surface, a so-called lightning strike phenomenon (insulative breakdown) occurred, resulting in image loss.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a laminated film according to the prior art. FIG. 2 is a sectional view of the laminated film of the present invention. 1.11: Insulating organic polymer film, 2,12: Conductive layer, 3.13: Dielectric layer and/or photoconductive layer.

Claims (1)

[Scope of utility model registration request] A laminated film in which each layer of an insulating organic polymer film A, a conductive layer B, a dielectric layer and/or a photoconductive layer C is laminated in the order of B/A/B/C.