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:
Aug. 27, 1985
Filed:
Nov. 28, 1984
Applicant:
Inventors:
Nobuhiro Takigawa, Numazu, JP;
Hideo Watanabe, Numazu, JP;
Kanzirou Kawasaki, Numazu, JP;
Keishi Kubo, Yokohama, JP;
Minoru Hakiri, Numazu, JP;
Eiichi Kawamura, Numazu, JP;
Assignee:
Ricoh Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
346209 ; 346207 ; 346208 ; 427150 ; 427151 ;
Abstract
This invention relates to a heat-sensitive transfer medium comprising a transfer sheet having a transfer layer containing a leuco dye as the main component and a receiving sheet having a receiving layer containing a developer for said leuco dye as the main component, characterized in that said receiving layer contains porous filler having an oil absorption amount of at least 50 ml/100 g and a phenolic compound expressed by the general formula, ##STR1## wherein R represents an alkylene group and X represents hydrogen or a halogen atom.