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:
Jul. 20, 1993
Filed:
May. 09, 1991
Applicant:
Inventors:
Assignee:
Imperial Chemical Industries PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ; B41M / ;
U.S. Cl.
CPC ...
503227 ; 428195 ; 428447 ; 428480 ; 428913 ; 428914 ;
Abstract
In a thermal transfer print, the ready diffusion of dyes through the receiver layer, which is necessary for effecting their thermal transfer from a dyesheet during printing, can also lead to subsequent diffusion within the print, with consequent degradation of print quality. This form of print instability is now countered by using a receiver layer comprising a dye-receptive polymer composition doped with a print stabilizer consisting of a toluene sulphonamideformaldehyde condensation product.