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. 08, 2009
Filed:
May. 21, 2007
Hitoshi Shimbo, Shizuoka, JP;
Tadafumi Tatewaki, Shizuoka, JP;
Shin Yamamoto, Osaka, JP;
Kunio Hayakawa, Shizuoka, JP;
Shinya Kawahara, Shizuoka, JP;
Hitoshi Shimbo, Shizuoka, JP;
Tadafumi Tatewaki, Shizuoka, JP;
Shin Yamamoto, Osaka, JP;
Kunio Hayakawa, Shizuoka, JP;
Shinya Kawahara, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The reversible thermosensitive recording medium according to the present invention comprises a support, a thermosensitive layer and a protective layer in order, the thermosensitive layer comprises an electron-donating coloring compound and an electron-accepting compound and reversibly changes the color depending on temperatures, and the protective layer comprises a reactive heterocyclic compound, and inorganic fine particles of which surface is at least partially treated into hydrophobic, alternatively the protective layer comprises inorganic fine particles of which number-average particle size is 100 nm or less and of which surface is at least partially coated with organic silane compounds.