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:
Jun. 11, 2002
Filed:
Aug. 31, 2000
Shinichi Kuramoto, Shizuoka-ken, JP;
Mitsuo Aoki, Shizuoka-ken, JP;
Hiroshi Yamashita, Shizuoka-ken, JP;
Fumihiro Sasaki, Shizuoka-ken, JP;
Tomio Kondou, Shizuoka-ken, JP;
Masahide Yamashita, Shizuoka-ken, JP;
Kazuhito Watanabe, Shizuoka-ken, JP;
Takashi Okada, Kanagawa-ken, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner including a resin and a colorant which is dispersed in the toner and which has an average major particle diameter not greater than about 0.5 &mgr;m, wherein the following relationships are satisfied: Ta≦100 (° C.), and (Tb−Ta)≧7.0 (° C.), wherein Ta represents a temperature at which the toner has a melt viscosity of 50,000 Pa·sec and Tb represents a temperature at which the toner has a melt viscosity of 5,000 Pa·sec.