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:
Nov. 18, 2008
Filed:
Nov. 01, 2005
Applicants:
Hiroki Kuboyama, Mishima, JP;
Satoshi Arai, Numazu, JP;
Tadafumi Tatewaki, Shizuoka-ken, JP;
Satoru Sampei, Numazu, JP;
Inventors:
Hiroki Kuboyama, Mishima, JP;
Satoshi Arai, Numazu, JP;
Tadafumi Tatewaki, Shizuoka-ken, JP;
Satoru Sampei, Numazu, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M 5/337 (2006.01);
U.S. Cl.
CPC ...
Abstract
A reversible thermosensitive recording medium including a substrate, and a thermosensitive layer including an electron donating coloring compound, an electron accepting compound, and a phenol anti-oxidation agent containing one or more sulfur atoms having an alkyl group on one side. In addition, the thermosensitive layer reversibly changes its color tone depending on temperature to reversibly record and erase an image thereon.