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. 25, 1992
Filed:
May. 11, 1990
Applicant:
Inventors:
Peter A Gemmell, Bentley, GB;
Carol Leliaert, Great Dunmow, GB;
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ; B41M / ;
U.S. Cl.
CPC ...
503227 ; 8471 ; 428195 ; 428480 ; 428913 ; 428914 ;
Abstract
A thermal transfer printing sheet suitable for the printing of black images in a dye diffusion thermal transfer printing process. The sheet comprises a substrate having a coating comprising a black dye mixture comprising from 5 to 60% of a dye of Formula 1, from 5 to 60% of Formula 2, from 5 to 60% of a dye of Formula 3 and/or from 1 to 60% of a dye of Formula 4.