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. 28, 2017

Filed:

Mar. 13, 2017
Applicant:

Kyocera Document Solutions Inc., Osaka-shi, Osaka, JP;

Inventors:

Tamotsu Shimizu, Osaka, JP;

Eiji Gyotoku, Osaka, JP;

Akihiro Watanabe, Osaka, JP;

Norio Kubo, Osaka, JP;

Minoru Wada, Osaka, JP;

Ryo Taniguchi, Osaka, JP;

Yasushi Imanishi, Osaka, JP;

Takahiro Okubo, Osaka, JP;

Assignee:

KYOCERA DOCUMENT SOLUTIONS INC., Osaka-Shi, Osaka, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/08 (2006.01); G03G 15/09 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0889 (2013.01); G03G 15/0907 (2013.01);
Abstract

A developing device includes a developing roller, a conveyor roller, a developer stirring unit and a development bias applying unit. The developing roller is arranged to face a photoconductive drum at a predetermined developing position and supplies the toner. The conveyor roller is arranged to face the developing roller at a predetermined facing position and supplies the developer to the developing roller. The development bias applying unit applies development biases to the first sleeve of the developing roller and the second sleeve of the conveyor roller during a developing operation of developing the electrostatic latent image on the photoconductive drum with the toner. The development bias applying unit applies the development biases such that a shifting electric field to move the toner on the first sleeve of the developing roller toward the second sleeve of the conveyor roller is formed at the facing position during the developing operation.


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