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:
Jul. 06, 2010
Filed:
Jun. 28, 2007
Masataka Kawahara, Mishima, JP;
Hiroki Uematsu, Suntoh-gun, JP;
Akio Maruyama, Tokyo, JP;
Harunobu Ogaki, Suntoh-gun, JP;
Atsushi Ochi, Numazu, JP;
Akira Shimada, Suntoh-gun, JP;
Kyoichi Teramoto, Abiko, JP;
Toshihiro Kikuchi, Yokohama, JP;
Akio Koganei, Ichikawa, JP;
Takayuki Sumida, Kawasaki, JP;
Masataka Kawahara, Mishima, JP;
Hiroki Uematsu, Suntoh-gun, JP;
Akio Maruyama, Tokyo, JP;
Harunobu Ogaki, Suntoh-gun, JP;
Atsushi Ochi, Numazu, JP;
Akira Shimada, Suntoh-gun, JP;
Kyoichi Teramoto, Abiko, JP;
Toshihiro Kikuchi, Yokohama, JP;
Akio Koganei, Ichikawa, JP;
Takayuki Sumida, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming method is disclosed having a charging step, an exposure step, a developing step and a transfer step. This method uses a toner which includes toner particles containing a binder resin and a colorant, and inorganic fine powder, and uses a photosensitive member which has on its surface depressed portions which are independent of one another. The depressed portions have openings having an average minor-axis diameter Lpc satisfying the relationship of Dg<Lpc<Dt (Dt represents the weight-average particle diameter of the toner, and Dg represents the maximum number-average particle diameter among number-average particle diameter(s) of one or two or more types of inorganic fine powder constituting the inorganic fine powder, and the toner has an average circularity of from 0.925 to 0.995.