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:
May. 23, 1989
Filed:
Oct. 04, 1988
Kiyoyasu Hashimoto, Nara, JP;
Takashi Omura, Hyogo, JP;
Yasuyuki Suzuki, Osaka, JP;
Yoshiaki Hayashi, Osaka, JP;
Sumitomo Chemical Company Limited, Osaka, JP;
Abstract
A yellow dye-donor element for thermal dye transfer and having good characteristics for ink formation, and a thermal transfer sheet made using the yellow dye-element, having adequate sublimatability or vaporizability, good coloring, with a high printing density on receiving papers, and high storage stability and light stability of printing image, and employable as a yellow color among the three primary colors are provided. The above yellow color-element comprises a yellow dye dispersed or dissolved in a polymeric binder, which is represented by the formula (I): ##STR1## wherein R.sub.1 is an alkyl group of C.sub.1 -C.sub.12, an allyl group or a crotyl group; X is hydrogen, halogen or a C.sub.1 -C.sub.4 lower alkyl or C.sub.1 -C.sub.4 lower alkoxy group; Y is a C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.1 -C.sub.4 alkoxy, phenyl, tolyl, or phenoxy group; and A is --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 O--, or --CH.sub.2 CH.sub.2 CH.sub.2 --.