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. 04, 2014

Filed:

Jul. 19, 2011
Applicants:

Hisashi Nakajima, Shizuoka, JP;

Kimitoshi Yamaguchi, Shizuoka, JP;

Shigenori Yaguchi, Shizuoka, JP;

Hitoshi Iwatsuki, Shizuoka, JP;

Toyoaki Tano, Shizuoka, JP;

Mariko Takii, Shizuoka, JP;

Minoru Masuda, Shizuoka, JP;

Koichi Sakata, Shizuoka, JP;

Saori Yamada, Shizuoka, JP;

Hiroyuki Kishida, Shizuoka, JP;

Inventors:

Hisashi Nakajima, Shizuoka, JP;

Kimitoshi Yamaguchi, Shizuoka, JP;

Shigenori Yaguchi, Shizuoka, JP;

Hitoshi Iwatsuki, Shizuoka, JP;

Toyoaki Tano, Shizuoka, JP;

Mariko Takii, Shizuoka, JP;

Minoru Masuda, Shizuoka, JP;

Koichi Sakata, Shizuoka, JP;

Saori Yamada, Shizuoka, JP;

Hiroyuki Kishida, Shizuoka, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/06 (2006.01); G03G 9/113 (2006.01); G03G 9/107 (2006.01);
U.S. Cl.
CPC ...
G03G 9/1075 (2013.01); G03G 9/1136 (2013.01); G03G 9/1137 (2013.01); G03G 9/107 (2013.01);
Abstract

The developing method includes developing an electrostatic latent image on an image bearing member with a two-component developer including a toner and a carrier and born on at least one developer bearing member, whose surface moves at a linear speed of from 300 mm/sec to 2,000 mm/sec. The carrier includes a particulate core material; and a cover layer located on a surface of the core material and including a crosslinked material obtained by crosslinking a resin including a first unit having a specific tris(trialkylsiloxy) silyl group and a second unit having a specific alkoxysilyl group having a crosslinking ability. Each of the first unit and the second unit is included in the resin in a molar ratio of from 0.1 to 0.9 based on all the units included in the resin.


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