Silver halide photographic elements

• US 6,174,661 B1
• Filed: 12/28/1998
• Issued: 01/16/2001
• Est. Priority Date: 12/28/1998
• Status: Expired due to Fees

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Keyes, Gregory W., Chen, Janglin, Wang, Yongcai, Castle, Richard A.
• Primary Examiner(s): Schilling, Richard L.
• Application Number:
  US09/221,776
• Time in Patent Office: 750 Days
• Field of Search: 430/523, 430/527-531, 430/533, 430/536, 430/950, 430/961
• US Class Current: 430/533
• CPC Class Codes: G03C 1/76 Photosensitive materials characterised by the base or auxiliary layers
• CPC Class Codes: 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
• CPC Class Codes: G03C 1/95 rendered opaque or writable, e.g. with inert particulate additives G03C1/775 takes precedence
• CPC Class Codes: Y10S 430/151 Matting or other surface reflectivity altering material
• CPC Class Codes: Y10S 430/162 Protective or antiabrasion layer

Abstract

The present invention is a photographic element containing a support, at least one light sensitive emulsion layer superposed on the first side of the support, and an outermost lubricant layer superposed on the support. The outermost layer includes more than 80 percent by weight of a composite wax particle. The composite wax particle includes a wax phase and a non-crosslinked polymer phase. The wax phase is greater than 80 percent by weight of a wax which has a melting point of greater than 30° C. In one embodiment the lubricant layer contains a fluoro containing compound. It is envisioned that the lubricant layer overlies a transparent magnetic layer. The total coating weight of the composite wax particle in the lubricant layer is in the range of from 1 to 300 mg/m². Preferably, the fluoro compound contains at least one type of an ionic group or a nonionic group.

Claims

1. A photographic element comprising:

a support;

at least one light sensitive emulsion layer superposed on said support;

an outermost lubricant layer superposed on said support comprising more than 80 percent by weight of a composite max particle, the composite wax particle consisting essentially of a wax phase and a non-crosslinked polymer phase, the wax phase comprising greater than 80 percent by weight of a wax which has a melting point of greater than 30°

C.

2. The photographic element of claim 1 wherein the outermost layer comprises a dry coating weight of from 1 to 300 mg/m².

3. The photographic element of claim 1 wherein the support comprises cellulose ester, cellulose triacetate, cellulose diacetate, cellulose acetate propionate, polyesters, polyimides, polyamides, polycarbonates, polystyrene, polyolefins, polysulfones, polyarylates or polyether imides.

4. The photographic element of claim 1 wherein the wax particle comprises a mean size smaller than 1 micron.

5. The photographic element of claim 1 wherein the wax phase of the wax particle further comprises dispersants/surfactants or water.

6. The photographic element of claim 1 wherein the wax comprises animal waxes, plant waxes, paraffin waxes, microcrystalline waxes, Fischer-Torpsch waxes, polyethylene waxes or polypropylene waxes.

7. The photographic element of claim 1 wherein the noncrosslinked polymer phase is free of chemically bonded acid groups and is prepared from monomers comprising acrylic monomers, hydroxyalkyl esters of acrylic monomers, nitrites of acrylic monomers, amides of acrylic monomers, vinyl acetate, poly(ethylene glycol)(meth)acrylates, N-vinyl-2-pyrrolidone, vinylimidazole vinyl propionate, vinylidene chloride, vinyl chloride, vinyl aromatic compounds, dialkyl maleates, dialkyl itaconates, dialkyl methylene malonates, isoprene or butadiene.

9. The photographic element of claim 1 wherein the outermost lubricant layer further comprises surfactants or coating aids.

10. The photographic element of claim 1 further comprising one or more conducting layer superposed on the first or second side of said support.

8. A photographic element comprising:

a support;

at least one light sensitive emulsion layer superposed on said support; and

an outermost lubricant layer superposed on said support comprising a fluorocompound and more than 80 percent by weight of a composite wax particle, the composite wax particle comprising a wax phase and a non-crosslinked polymer phase, the wax phase comprising greater than 80 percent by weight of a wax which has a melting point of greater than 30°

C.

11. A photographic element comprising:

a support having a first side and a second side;

at least one light sensitive emulsion layer superposed on the first side of said support;

a transparent magnetic layer comprising magnetic particles and a film forming binder; and

an outermost lubricant layer overlying the transparent magnetic layer comprising more than 80 percent by weight of a composite wax particle, the composite wax particle consisting essentially of a wax phase and a non-crosslinked polymer phase, the wax phase comprising greater than 80 percent by weight of a wax which has a melting point of greater than 30°

C.

12. The photographic element of claim 11 wherein the outermost layer comprises a dry coating weight of from 1 to 300 mg/m².

13. The photographic element of claim 11 wherein the magnetic particles comprise ferromagnetic iron oxides, surface treated or ferromagnetic chromium dioxides, or halogen atoms in solid solution.

14. The photographic element of claim 11 wherein the film forming binder comprises cellulose, polyacrylates, sulfonates, polyesters, polyurethanes, urea resins, melamine resins, urea-formaldehyde resins, polyacetals, polybutyrals, polyvinyl alcohol, epoxies, phenoxy resins, polycarbonates, vinyl chloride-vinyl acetate copolymers, vinyl chloride-vinyl acetate-vinyl-alcohol copolymers, vinyl chloride-vinyl acetate-maleic acid polymers, vinyl chloride-vinylidene chloride copolymers, vinyl chloride-acrylonitrile copolymers, acrylic ester-acrylonitrile copolymers, acrylic ester-vinylidene chloride copolymers, methacrylic ester-styrene copolymers, butadiene-acrylonitrile copolymers, acrylonitrile-butadiene-acrylic or methacrylic acid copolymers, or styrene-butadiene copolymers.

15. The photographic element of claim 11 wherein the transparent magnetic layer further comprises filler particles dispersing agents coating aids or surfactants.