Photographic film with base containing polymeric antistatic material

• US 6,207,361 B1
• Filed: 12/27/1999
• Issued: 03/27/2001
• Est. Priority Date: 12/27/1999
• Status: Expired due to Fees

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Majumdar, Debasis, Laney, Thomas M., Greener, Jehuda
• Primary Examiner(s): Schilling, Richard L.
• Application Number:
  US09/472,486
• Time in Patent Office: 456 Days
• Field of Search: 430/527, 430/529, 430/531
• US Class Current: 430/527
• CPC Class Codes: G03C 1/7954 Polyesters
• CPC Class Codes: G03C 1/89 Macromolecular substances therefor

Abstract

The invention relates to a photographic film imaging material comprising at least one silver halide layer and a base material comprising at least one extruded layer comprising a polymeric anti-static material.

Claims

1. A photographic film imaging element comprising at least one silver halide layer applied onto a film support, wherein said support comprises at least one extruded layer comprising a polymeric antistatic material that is integral with at least one other layer of said support.

2. The imaging element of claim 1 wherein said at least one extruded layer further comprises a polymeric matrix material for said polymeric antistatic material.

3. The imaging element of claim 1 wherein said polymeric antistatic material comprises at least one material selected from the group consisting of polyetheresteramide, polyether block copolyamide, and segmented polyether urethane.

4. The imaging element of claim 1 wherein said polymeric antistatic layer is on the side of the base layer opposite the side of the silver halide emulsion.

5. The imaging element of claim 1 wherein said film support comprises a polymer base layer having an antistatic material integrally formed onto the bottom side.

6. The imaging element of claim 1 wherein said film support comprises a polymer base layer selected from the group consisting of polyesters, polycarbonates, polystyrenes, acrylics, and polyamides.

7. The imaging element of claim 1 wherein said imaging material has a surface electrical resistivity on the bottom of said film support that is less than 13 log ohm/square.

8. The imaging element of claim 2 further comprising a compatibilizer to aid in dispersion of said polymeric antistatic material in said matrix polymer.

9. The imaging element of claim 8 wherein said compatibilizer comprises polymers that are independently miscible with the matrix polymer and the antistatic polymer.

10. The imaging element of claim 2 wherein said matrix polymer comprises a polyester.

11. The imaging element of claim 2 wherein said matrix polymer comprises at least one member selected from the group consisting of polycarbonates, polyurethanes, acrylics, polyamides, and polystyrenes.

12. The imaging element of claim 1 wherein said base material comprises an oriented polymer film.

13. The imaging element of claim 1 wherein said antistatic layer is translucent or transparent.

14. The imaging element of claim 1 wherein said antistatic layer is polyaniline or other inherently conductive polymer that is processable in the melt state without losing its electro-conductive properties.