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. 06, 2006
Filed:
Aug. 22, 2003
Masami Tomita, Shizuoka, JP;
Toshiki Nanya, Shizuoka, JP;
Fumihiro Sasaki, Shizuoka, JP;
Shigeru Emoto, Shizuoka, JP;
Shinichiro Yagi, Shizuoka, JP;
Hiroto Higuchi, Shizuoka, JP;
Naohiro Watanabe, Shizuoka, JP;
Tadao Takikawa, Aichi, JP;
Masami Tomita, Shizuoka, JP;
Toshiki Nanya, Shizuoka, JP;
Fumihiro Sasaki, Shizuoka, JP;
Shigeru Emoto, Shizuoka, JP;
Shinichiro Yagi, Shizuoka, JP;
Hiroto Higuchi, Shizuoka, JP;
Naohiro Watanabe, Shizuoka, JP;
Tadao Takikawa, Aichi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention is directed to a toner for electrophotography that exhibits excellent hot offset resistance, storability, and glossiness and can obtain a high image-resolution and highly detailed images when used for energy saving apparatuses or as a color toner. The present invention is also directed to a developer, image-forming apparatus, and process cartridge containing such toner, and image-forming process using such toner. The toner of the present invention contains a resin and wax. The wax is dispersed within the resin in a shaped of fine particles to form a toner particle. In the toner particle, more dispersed wax particles are existed in a surface portion of the toner particle than a centric portion of the toner particle.