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:
Apr. 08, 2025

Filed:

Mar. 28, 2022
Applicant:

Kyocera Document Solutions Inc., Osaka, JP;

Inventor:

Ryo Yamada, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/08 (2006.01); B01D 39/16 (2006.01); G03G 21/20 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0891 (2013.01); B01D 39/16 (2013.01); G03G 15/0898 (2013.01); G03G 21/206 (2013.01);
Abstract

A developing device (-) is provided with a development container (), a first stirring conveyance member (), a second stirring conveyance member (), and a developer carrier (). The development container () has a first conveyance chamber (), a second conveyance chamber (), and a communication portion (). The first stirring conveyance member () includes a first rotation shaft () and a first stirring blade (). The second stirring conveyance member () includes a second rotation shaft () and a second stirring blade (). The developer carrier () is opposed to the second stirring conveyance member (). The first rotation shaft () includes, at least in a partial region in an axial direction of the first rotating shaft (), a tapered portion () of which a shaft diameter increases toward a downstream side in a developer conveyance direction in the first conveyance chamber ().


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