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:
Sep. 17, 2024

Filed:

Jun. 09, 2023
Applicant:

Kyocera Document Solutions Inc., Osaka, JP;

Inventors:

Kenichi Tamaki, Osaka, JP;

Hiroshi Yamazaki, Osaka, JP;

Junichi Nakagawa, Osaka, JP;

Takuji Watanabe, Osaka, JP;

Tamotsu Shimizu, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 21/20 (2006.01); G03G 15/08 (2006.01); G03G 15/09 (2006.01);
U.S. Cl.
CPC ...
G03G 21/206 (2013.01); G03G 15/0848 (2013.01); G03G 15/0898 (2013.01); G03G 15/0921 (2013.01);
Abstract

Provided is an image forming apparatus in which, while image formation is prevented from being performed, scattered toner that has dropped from a filter and adhered to an outer peripheral surface of a developer carrying member is recovered. A fixed magnet of the developer carrying member has a first pole that is arranged to face the filter, and a second pole and a third pole on a downstream side relative to the first pole. The first pole and the second pole have polarities opposite to each other, and the second pole and the third pole have a same polarity. A length of a gap between the developing container and an area where the developing sleeve faces the second pole among areas of the developing sleeve is smaller than a length between the developing sleeve and the filter.


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