# US 5,707,791 A · Silver halide photographic light-sensitive material

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- Number: US 5,707,791 A
- Document ID: US5707791A
- Status: Granted
- Kind: A
- Application number: 08/585,488
- Filed: 1996-01-16
- Granted: 1998-01-13
- Earliest claimed: 1995-01-18
- Assignees: Konica Corporation
- Inventors: Mineko Ito; Koichi Saito; Chieko Uehara
- Web page: https://patentgrep.com/patent/US5707791A

## CPC

- G03C 5/14: combined with sound-recording (sound-recording in general G11B)
- 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 1/93: Macromolecular substances therefor
- G03C 11/02: Marking or applying text
- G11B 5/633: of cinematographic films or slides with integral magnetic track
- G03C 1/7954: {Polyesters}
- G03C 2001/7628: {Back layer}
- G03C 2200/10: Advanced photographic system
- 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)
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A silver halide photographic light-sensitive material is disclosed, comprising a polyester support having on one side thereof a silver halide emulsion layer, and on the other side of the support, a layer containing a polyester resin or polyurethane resin and further thereon a magnetic recording layer.

## Claims

### Claim 1

A silver halide photographic light-sensitive material comprising:
(a) a polyester support;
(b) a silver halide emulsion layer coated on one side of said polyester support;
(c) a resin layer coated on the other side of said polyester support, said resin layer comprising an antistatic agent selected from the group consisting of a conductive polymer and a metal oxide, and a resin selected from the group consisting of an aqueous-dispersible polyester resin and an aqueous-dispersible polyurethane resin; and
(d) a magnetic layer coated on said resin layer.

### Claim 2 (depends on 1)

The silver halide photographic material of claim 1, wherein said polyester resin or polyurethane resin is contained in the form of a solid particle dispersion.

### Claim 3 (depends on 1)

The silver halide photographic material of claim 1, wherein said polyester resin is a polyester comprising, as a copolymerizing component, a hydrophilic component selected from a component having a sulfonate group, diethylene glycol and polyalkylene ether glycol.

### Claim 4 (depends on 3)

The silver halide photographic material of claim 3, wherein said polyester resin is polyester comprising, as copolymerizing component, an aromatic dicarboxylic acid having a sulfonate group.

### Claim 5 (depends on 1)

The silver halide photographic light-sensitive material of claim 1, wherein said resin layer contains an aqueous polyester resin.

### Claim 6 (depends on 1)

The silver halide photographic material of claim 1, wherein said magnetic recording layer contains a cellulose ester selected from cellulose diacetate, cellulose acetatebutylate and cellulose acetatepropionate.

### Claim 7 (depends on 6)

The silver halide photographic material of claim 6, wherein said magnetic recording layer contains cellulose diacetate.

### Claim 8 (depends on 1)

The silver halide photographic material of claim 1, wherein said polyester support mainly comprises polyethylene-2,6-naphthalate.

### Claim 9 (depends on 1)

The silver halide photographic material of claim 1, wherein said layer containing the polyester resin or polyurethane resin is formed by coating a dispersion of solid particles of the polyester resin or polyurethane resin dispersed in an aqueous medium.

### Claim 10 (depends on 1)

The silver halide photographic material of claim 1, wherein said metal oxide is selected from the group consisting of ZnO, TiO.sub.2, SnO.sub.2, Al.sub.2 O.sub.3, In.sub.2 O.sub.3, SiO.sub.2, MgO, BaO, MoO.sub.2, V.sub.2 O.sub.5, HfO.sub.2, ThO.sub.2, ZrO.sub.2, CeO.sub.2 and a composite oxide thereof.

### Claim 11 (depends on 10)

The silver halide photographic material of claim 10, wherein said metal oxide is selected from the group consisting of ZnO, TiO.sub.2 and SnO.sub.2.