Photographic light-sensitive elements

• US 5,378,577 A
• Filed: 10/30/1992
• Issued: 01/03/1995
• Est. Priority Date: 10/30/1992
• Status: Expired due to Term

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Smith, Dennis E., Muehlbauer, John L.
• Primary Examiner(s): Dote, Janis L.
• Application Number:
  US07/968,801
• Time in Patent Office: 795 Days
• Field of Search: 430/138, 430/950, 430/523, 430/537, 430/536, 430/631, 430/961, 430/220, 430/531, 430/107, 430/110
• US Class Current: 430/138
• CPC Class Codes: G03C 1/32 Matting agents see also G03C1/95
• 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 1/85 characterised by antistatic additives or coatings
• CPC Class Codes: G03C 1/95 rendered opaque or writable, e.g. with inert particulate additives G03C1/775 takes precedence
• CPC Class Codes: G03C 2001/7621 Antiabrasion
• CPC Class Codes: G03C 2001/7628 Back layer
• CPC Class Codes: Y10S 430/151 Matting or other surface reflectivity altering material
• CPC Class Codes: Y10S 430/162 Protective or antiabrasion layer

Abstract

Photographic elements having at least one light-sensitive layer and at least one layer having polymeric matte particles surrounded by a layer of colloidal inorganic particles.

Claims

1. A photographic element comprising at least one silver halide light-sensitive layer on a support, said element containing polymeric matte particles in at least one gelatin containing layer, said polymeric matte particles having a core surrounded by a layer of colloidal inorganic particles.

2. The photographic element of claim 1 wherein the polymeric matte particles have a mean particle diameter of from 0.5 to 10 micrometers.

3. The photographic element of claim 1 wherein the polymeric matte particles have a mean particle diameter of from 1 to 5 micrometers.

4. The photographic element of claim 1 wherein the polymeric matte particles have a mean particle diameter of from 1 to 3.5 micrometers.

5. The photographic element of claim 1 wherein the polymeric matte particle core is a polyaddition polymer.

6. The photographic element of claim 5 wherein the polyaddition polymer is polyvinyltoluene.

7. The photographic element of claim 1 wherein the polymeric matte particle core is a polycondensation polymer.

8. The photographic element of claim 1 wherein the colloidal inorganic particles are silica, alumina, tin oxide, titanium dioxide, zinc oxide or mixtures thereof.

9. The photographic element of claim 8 wherein the colloidal inorganic particles are silica.

10. The photographic element of claim 9 wherein the polymeric matte particles have a mean particle diameter of from 0.5 to 10 micrometers.

11. The photographic element of claim 9 wherein the polymeric matte particles have a mean particle diameter of from 1 to 5 micrometers.

12. The photographic element of claim 9 wherein the polymeric matte particles have a mean particle diameter of from 1 to 3.5 micrometers.

13. The photographic element of claim 9 wherein the polymeric particle core is a polyaddition polymer.

14. The photographic element of claim 13 wherein the polyaddition polymer is polyvinyltoluene.

15. The photographic element of claim 9 wherein the polymeric particle core is a polycondensation polymer.

16. The photographic element of claim 9 wherein the polymeric matte particles are prepared by limited coalesence.

18. The photographic element of claim 16 wherein the colloidal inorganic particles are silica.

17. A photographic element comprising at least one silver halide light-sensitive layer on a support, said element containing polymeric matte particles in an overcoat layer, said polymeric matte particles having a core surrounded by a layer of colloidal inorganic particles.