The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1987
Filed:
Feb. 11, 1986
Applicant:
Inventors:
Frank E DeBruyn, Jr, Abington, MA (US);
Lucretia J Weed, Lexington, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430206 ; 430214 ; 430227 ; 430232 ; 430236 ; 430244 ; 430376 ; 430404 ; 430420 ; 430451 ; 430453 ;
Abstract
A scavenger-spreader element adapted for use with a photosensitive element to form a negative image is disclosed as well as methods for processing said photosensitive element to produce the negative image. The scavenger-spreader element comprises a support carrying a hydrophilic layer, a cross-linking agent for the polymeric thickener of the photographic processing composition, a barrier layer to control diffusion of said cross-linking agent and a layer adapted to possess substantial adhesion for the cross-linked polymeric thickening agent.