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:
Nov. 09, 2010
Filed:
Mar. 16, 2007
Katsunori Kurose, Takarazuka, JP;
Chiyoshi Nozaki, Otsu, JP;
Tsuyoshi Nozaki, Ikeda, JP;
Atsushi Yamamoto, Kawanishi, JP;
Mitsuyo Matsumoto, Ibaraki, JP;
Katsunori Kurose, Takarazuka, JP;
Chiyoshi Nozaki, Otsu, JP;
Tsuyoshi Nozaki, Ikeda, JP;
Atsushi Yamamoto, Kawanishi, JP;
Mitsuyo Matsumoto, Ibaraki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention aims at providing non-magnetic toner which is excellent in fixing property and charge property and capable of inhibiting occurrence of scumming, as well as an image forming apparatus and a process cartridge using the non-magnetic toner. A non-magnetic toner comprising: a toner base particle which comprises a binding resin, and a colorant; and external additives, wherein a surface of the toner base particle contains at least a resin having at least silanol group, and the external additives contain at least particles composed of silicon oxide.