Photographic light-sensitive elements

• US 5,288,598 A
• Filed: 10/30/1992
• Issued: 02/22/1994
• Est. Priority Date: 10/30/1992
• Status: Expired due to Fees

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Smith, Dennis E., Fant, Alfred B., Kestner, Melvin M., Visconte, Gary W., Sterman, Melvin D.
• Primary Examiner(s): Bowers, Jr., Charles L.
• Assistant Examiner(s): NEVILLE, THOMAS
• Application Number:
  US07/968,720
• Time in Patent Office: 480 Days
• Field of Search: 430/496, 430/523, 430/539, 430/536, 430/531, 430/627, 430/628, 430/950, 430/961
• US Class Current: 430/496
• 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

Photographic elements containing at least one layer containing polymeric particles surrounded by a layer of colloidal inorganic particles and separate particles of colloidal silica.

Claims

1. A photographic element comprising at least one light-sensitive layer on a support said element containing in at least one layer, a first particulate material and a second particulate material, said first particulate material being polymeric particles having a core surrounded by a shell of colloidal inorganic particles and said second particulate material being colloidal silica.

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

3. The photographic element of claim 1 wherein the polymeric particle core has a mean diameter of from 1 to 5 micrometers.

4. The photographic element of claim 1 wherein the polymeric particle core has a mean diameter of from 1 to 3.5 micrometers.

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

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

7. The photographic element of claim 4 wherein the polyaddition polymer is polyvinyltoluene.

8. The photographic element of claim 1 wherein the polymeric particles are included in the top-most layer.

9. The photographic element of claim 1 wherein the polymeric particles are included in an overcoat layer.

10. The photographic element of claim 1 wherein the second particulate material has a particle size of less than 50 nm.

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

12. The photographic element of claim 11 wherein the colloidal inorganic particles are silica.