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:
Mar. 09, 2004
Filed:
May. 23, 2002
Takeshi Naka, Susono, JP;
Yuichi Mizoo, Toride, JP;
Satoshi Matsunaga, Mishima, JP;
Masami Azuma, Toride, JP;
Takashige Kasuya, Shizuoka-ken, JP;
Tadashi Dojo, Numazu, JP;
Tsuneo Nakanishi, Mishima, JP;
Nene Shibayama, Mishima, JP;
Katsuhisa Yamazaki, Numazu, JP;
Yusuke Hasegawa, Numazu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A toner contains at least a bonding resin and a coloring agent, and has a weight mean particle size from 5 &mgr;m to 12 &mgr;m; not less than 90% by number of particles not less than 3 &mgr;m have a circularity “a” not less than 0.900; a cut ratio Z and a weight mean size X of the toner are related as: cut ratio Z≦5.3×X; and a relationship of particles Y having a circularity of not less than 0.950 and a weight mean size X is Y≧e ×X where X is 5 to 12 &mgr;m.