# US 4,394,441 A · Photographic sensitive materials

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- Number: US 4,394,441 A
- Document ID: US4394441A
- Status: Granted
- Kind: A
- Application number: 06/339,798
- Filed: 1982-01-15
- Granted: 1983-07-19
- Earliest claimed: 1981-01-14
- Assignees: Fuji Photo Film Co., Ltd.
- Inventors: Hideo Kawaguchi; Takayuki Inayama; Masaaki Takimoto; Yoshihiro Ono
- Web page: https://patentgrep.com/patent/US4394441A

## CPC

- G03C 1/853: {Inorganic compounds, e.g. metals}
- G03C: PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES (for photomechanical purposes G03F); PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in subclass G03B, see G03B; photomechanical production of textured or patterned surfaces G03F; electrophotography, magnetography G03G)

## Abstract

A photographic sensitive material is described comprising at least one photographic sensitive layer provided on a plastic film base through a subbing layer, wherein the improvement comprises said subbing layer containing fine particles of at least one electrically conductive crystalline metal oxide selected from ZnO, TiO.sub.2, SnO.sub.2, Al.sub.2 O.sub.3, In.sub.2 O.sub.3, SiO.sub.2, MgO, BaO, and MoO.sub.3, or a compound oxide thereof having a volume resistivity of 10.sup.7 .OMEGA. cm or less.

## Claims

### Claim 1

A photographic sensitive material comprising at least one silver halide sensitive layer provided on a plastic film base through a subbing layer, wherein the improvement comprises said subbing layer containing fine particles of at least one electrically conductive crystalline metal oxide selected from ZnO, TiO.sub.2, SnO.sub.2, Al.sub.2 O.sub.3, In.sub.2 O.sub.3, SiO.sub.2, MgO, BaO, and MoO.sub.3, or a compound oxide thereof having a volume resistivity of 10.sup.7 .OMEGA. cm or less, dispersed in an organic polymer binder.

### Claim 2 (depends on 1)

A photographic sensitive material as in claim 1, wherein the volume resistivity of the particles is 10.sup.5 .OMEGA. cm or less.

### Claim 3 (depends on 1, 2)

A photographic sensitive material as in claim 1 or 2, wherein the particle size is from 0.01 to 0.7.mu..

### Claim 4 (depends on 1, 2)

A photographic sensitive material as in claim 1 or 2, wherein the particle size is from 0.02 to 0.5.mu..

### Claim 5 (depends on 1, 2)

A photographic sensitive material as in claim 1 or 2, wherein the electrically conductive fine particles constitute from 5 to 75% of the volume of the subbing layer and have an area concentration of from 0.05 g/m.sup.2 to 20 g/m.sup.2.

### Claim 6 (depends on 1, 2)

A photographic sensitive material as in claim 1 or 2, wherein the electrically conductive fine particles constitute from 10 to 70% of the volume of subbing layer and have an area concentration of from 0.1 g/m.sup.2 to 10 g/m.sup.2.

### Claim 7 (depends on 3)

A photographic sensitive material as in claim 3, wherein the electrically conductive fine particles constitute from 5 to 75% of the volume of the subbing layer and have an area concentration of from 0.05 g/m.sup.2 to 20 g/m.sup.2.

### Claim 8 (depends on 3)

A photographic sensitive material as in claim 3, wherein the electrically conductive fine particles constitute from 10 to 70% of the volume of subbing layer and have an area concentration of from 0.1 g/m.sup.2 to 10 g/m.sup.2.

### Claim 9 (depends on 1)

A photographic sensitive material as in claim 1, wherein the metal oxide is ZnO, TiO.sub.2 or SnO.sub.2.

### Claim 10 (depends on 1)

A photographic sensitive material as in claim 1, wherein said subbing layer is formed by coating a dispersion of the at least one electrically conductive crystalline metal oxide, the organic polymer binder and a solvent.

### Claim 11 (depends on 1)

A photographic sensitive material as in claim 1, wherein the volume content of the at least one electrically conductive fine particle is from 5 to 75% of the volume of the subbing layer.

### Claim 12 (depends on 1)

A photographic sensitive material as in claim 1, wherein said subbing layer consists essentially of the at least one electrically conductive crystalline metal oxide and the organic polymer binder.