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:
Feb. 06, 2007
Filed:
Feb. 24, 2004
Kazuhiko Umemura, Shizuoka, JP;
Satoshi Mochizuki, Shizuoka, JP;
Yasuaki Iwamoto, Shizuoka, JP;
Yasuo Asahina, Shizuoka, JP;
Hideki Sugiura, Shizuoka, JP;
Tomoyuki Ichikawa, Shizuoka, JP;
Shinya Nakayama, Shizuoka, JP;
Koichi Sakata, Shizuoka, JP;
Tomoko Utsumi, Shizuoka, JP;
Kazuhiko Umemura, Shizuoka, JP;
Satoshi Mochizuki, Shizuoka, JP;
Yasuaki Iwamoto, Shizuoka, JP;
Yasuo Asahina, Shizuoka, JP;
Hideki Sugiura, Shizuoka, JP;
Tomoyuki Ichikawa, Shizuoka, JP;
Shinya Nakayama, Shizuoka, JP;
Koichi Sakata, Shizuoka, JP;
Tomoko Utsumi, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner for electrophotography contains a binder resin, a colorant and a releasing agent and has a viscosity, a storage modulus (G') and a loss modulus (G″), in which the viscosity is 1×10Pa·s or more and a loss tangent (tan δ) as the ratio of G′ to G″ is 0.4 or more at temperatures from 140° C. to 170° C.