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.

Date of Patent:
Nov. 11, 2014

Filed:

Aug. 17, 2010
Applicants:

Katsumi Nukada, Kanagawa, JP;

Wataru Yamada, Kanagawa, JP;

Tsuyoshi Miyamoto, Kanagawa, JP;

Kenya Sonobe, Kanagawa, JP;

Takatsugu Doi, Kanagawa, JP;

Inventors:

Katsumi Nukada, Kanagawa, JP;

Wataru Yamada, Kanagawa, JP;

Tsuyoshi Miyamoto, Kanagawa, JP;

Kenya Sonobe, Kanagawa, JP;

Takatsugu Doi, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G03G 5/147 (2006.01); G03G 9/097 (2006.01); G03G 9/08 (2006.01); G03G 21/00 (2006.01); G03G 5/06 (2006.01); G03G 5/07 (2006.01); G03G 9/087 (2006.01);
U.S. Cl.
CPC ...
G03G 21/0011 (2013.01); G03G 5/14791 (2013.01); G03G 9/09775 (2013.01); G03G 9/0827 (2013.01); G03G 9/0819 (2013.01); G03G 5/0616 (2013.01); G03G 5/071 (2013.01); G03G 9/0825 (2013.01); G03G 9/08782 (2013.01); G03G 9/08795 (2013.01); G03G 5/0614 (2013.01); G03G 9/09733 (2013.01); G03G 2215/00957 (2013.01); G03G 9/08797 (2013.01); G03G 5/075 (2013.01); G03G 5/076 (2013.01);
Abstract

The present invention provides an image forming apparatus including: an electrophotographic photoreceptor; a charging unit; an electrostatic latent image forming unit that forms an electrostatic latent image; a developing unit that develops the electrostatic latent image formed at the electrophotographic photoreceptor by a developer to form a toner image, the developing unit storing the developer containing a toner having toner particles containing a crystalline resin and having a shape factor SF1 of from 100 to 150, a volume average particle diameter of from 3 to 6 μm, and fluorocarbon-based resin particles as an external additive; a transfer unit; and a cleaning unit that cleans the surface of the electrophotographic photoreceptor with a blade containing urethane rubber, the blade disposed applying a pressure to the electrophotographic photoreceptor surface of 0.20 mN/mm or more.


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