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:
Oct. 31, 2006
Filed:
Jan. 21, 2004
Hiroto Higuchi, Shizuoka, JP;
Masami Tomita, Shizuoka, JP;
Fumihiro Sasaki, Shizuoka, JP;
Shigeru Emoto, Shizuoka, JP;
Naohito Shimota, Shizuoka, JP;
Maiko Kondo, Shizuoka, JP;
Takahiro Honda, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Shinichiro Yagi, Shizuoka, JP;
Toshiki Nanya, Shizuoka, JP;
Tadao Takikawa, Aichi, JP;
Hiroto Higuchi, Shizuoka, JP;
Masami Tomita, Shizuoka, JP;
Fumihiro Sasaki, Shizuoka, JP;
Shigeru Emoto, Shizuoka, JP;
Naohito Shimota, Shizuoka, JP;
Maiko Kondo, Shizuoka, JP;
Takahiro Honda, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Shinichiro Yagi, Shizuoka, JP;
Toshiki Nanya, Shizuoka, JP;
Tadao Takikawa, Aichi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A toner for developing latent electrostatic images is in the form of particles prepared by dissolving or dispersing each component of a composition in an organic solvent to form a solution or dispersion, the composition containing at least a resin reactive with a compound having an active hydrogen group, a compound having an active hydrogen group, a coloring agent, a releasing agent, and a graft polymer C of a polyolefin resin A on which a vinyl resin B has been at least partially grafted; dispersing the solution or dispersion in an aqueous medium; reacting the reactive resin with the compound having an active hydrogen group; removing the organic solvent during or after the step of reacting; and washing and drying particles formed by removing the organic solvent.