# US 4,399,213 A · Silver halide photosensitive photographic material

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- Number: US 4,399,213 A
- Document ID: US4399213A
- Status: Granted
- Kind: A
- Application number: 06/312,136
- Filed: 1981-10-16
- Granted: 1983-08-16
- Earliest claimed: 1978-01-09
- Assignees: Konishiroku Photo Industry Co., Ltd.
- Inventors: Yoshikazu Watanabe; Motoaki Tanaka
- Web page: https://patentgrep.com/patent/US4399213A

## CPC

- G03C 1/7614: {Cover layers; Backing layers; Base or auxiliary layers characterised by means for lubricating, for rendering anti-abrasive or for preventing adhesion (characterised by the inert particulate additive G03C1/95)}
- G03C 1/32: Matting agents {(see also G03C1/95)}
- G03C 1/385: {containing fluorine}
- Y10S 430/142: Dye mordant
- Y10S 430/151: Matting or other surface reflectivity altering material
- 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)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A silver halide photosensitive material comprising a support, a silver halide photosensitive layer, and a protective layer formed on said support. The protective layer is essentially composed on a plurality of non-photosensitive hydrophilic colloidal layers at least one of which contains oil particles. The outermost layer of the hydrophilic colloidal layers contains a matting agent in the form of colloidal particles and has a thickness of not more than one fourth of the average size of the matting agent particles and wherein the density of the oil particles in said outermost layer does not exceed 0.2 by volume of the binder, and that of the oil particles in the protective layers other than the outermost layer is in the range of 0.1 to 0.8.

## Claims

### Claim 1

A silver halide photosensitive material comprising a support, and a silver halide photosensitive layer and a protective layer formed on said support in this order, the protective layer being essentially composed of a plurality of non-photosensitive hydrophilic colloidal layers at least one of which contains oil particles, the outermost layer of the hydrophilic colloidal layers containing a matting agent in the form of colloidal particles and having a thickness not more than 1/4 times an average size of the matting agent particles and wherein the density of the oil particles in the outermost layer is the range not exceeding 0.2 by volume of the binder, and that of the oil particles in the protective layers other than the outermost layer is in the range of 0.1-0.8.

### Claim 2 (depends on 1)

A silver halide photosensitive material according to claim 1, wherein said matting agent is polymethacrylate or silica and has an average particle size of 1 to 8.mu..

### Claim 3 (depends on 1)

A silver halide photosensitive material according to claim 1, wherein the outermost layer is not more than 1.mu. in thickness.

### Claim 4 (depends on 1)

A silver halide photosensitive material according to claim 1, wherein the density of the oil particles in the outermost layer is not the highest among the oil particle densities of the other hydrophilic colloidal layer or layers.

### Claim 5 (depends on 1)

A silver halide photosensitive material according to claim 1, wherein the oil particles in the outermost layer comprises a slipping agent as its principal component.

### Claim 6 (depends on 1)

A silver halide photosensitive material according to claim 1, wherein at least one of the hydrophilic colloidal layers comprises an organic fluoro compound.

### Claim 7 (depends on 6)

A silver halide photosensitive material according to claim 6, wherein said organic fluoro compound is contained in an amount of 0.1-500 mg per m.sup.2 of the at least one layer.