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:
Feb. 09, 1982
Filed:
Sep. 11, 1980
Applicant:
Inventors:
John G Scott, Maldon, GB;
Anthony K Harvey, Stisted, Nr. Braintree, both, GB;
Assignee:
Ciba Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430365 ; 430382 ; 430384 ; 430385 ; 430386 ; 430388 ; 430389 ; 430505 ; 430544 ; 430549 ; 430552 ; 430553 ; 430554 ; 430556 ; 430557 ;
Abstract
Color photographic material is described in which a yellowish image is formed which can be used to print black and white prints. Also present in the layer is a small amount of a more reactive coupler which produces a colored image to which black and white paper is not sensitive. This more reactive coupler reduces the fog in the highlight areas. Most preferably small amounts of other couplers are present which result in a green or brown image which makes it easier for the operator to focus the image.