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. 02, 1986
Filed:
Dec. 13, 1983
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A thermosensitive image transfer medium consisting of (i) an image transfer sheet having an image transfer layer consisting essentially of a leuco dye, and (ii) an acceptor sheet having an acceptor layer consisting essentially of a color developer which induces color formation in the leuco dye, the color developer being a mixture of a bisphenol derivative of the following formula and a p-hydroxybenzoic acid ester with a melting point of 100.degree. C. or less, and, of the image transfer layer and said acceptor layer, at least one layer containing a porous filler having an oil absorption of 50 ml/100 g or more as measured in accordance with the Japanese Industrial Standard K 5101, ##STR1## wherein X.sup.1 and X.sup.2 each represent a lower alkyl group or halogen, R.sup.1 and R.sup.2 each represent hydrogen or an alkyl group having 1 to 6 carbon atoms, and m and n each represent an integer of 0 through 4.