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. 13, 2002
Filed:
Nov. 13, 2000
Hideyuki Ueda, Shizuoka-ken, JP;
Shohichi Sugimoto, Shizuoka-ken, JP;
Satoru Miyamoto, Shizuoka-ken, JP;
Osamu Uchinokura, Shizuoka-ken, JP;
Kumi Hasegawa, Shizuoka-ken, JP;
Tamotsu Kajihara, Shizuoka-ken, JP;
Yoshihiro Suguro, Shizuoka-ken, JP;
Noboru Kuroda, Shizuoka-ken, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner including toner particles including at least a binder resin having a first melting point and a first solubility parameter, a colorant and a particulate release agent having a second melting point lower than the first melting point and a second solubility parameter different from the first solubility parameter, wherein the particulate release agent dispersed in the toner particles has an average needle-shape degree LD/SD of not less than 1.6, where LD is a diameter of a particle of the release agent dispersed in the toner in a major axis direction thereof and SD is a diameter of the particle in a minor axis direction.