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:
Dec. 25, 1990
Filed:
Jul. 17, 1989
Applicant:
Inventors:
Assignee:
Ricoh Company Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503226 ; 427152 ; 503200 ;
Abstract
A thermosensitive recording material is disclosed, which comprises (a) a heat insulating support having a foamed portion with minute voids therein, (b) an undercoat layer formed on the heat insulating support, comprising as the main component a film-forming polymeric material in an amount ranging from more than 50 wt. % to 100 wt. % of the entire weight of the undercoat layer, and (c) a thermosensitive coloring layer formed on the undercoat layer, comprising a leuco dye and a color developer for inducing color formation in the leuco dye upon application of heat thereto.