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:
Oct. 10, 2017

Filed:

Jul. 29, 2016
Applicant:

Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;

Inventor:

Satoru Suzuki, Kasugai, JP;

Assignee:

Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G03G 21/20 (2006.01); G03G 15/02 (2006.01); G03G 15/06 (2006.01);
U.S. Cl.
CPC ...
G03G 21/203 (2013.01); G03G 15/0266 (2013.01); G03G 15/065 (2013.01); G03G 15/50 (2013.01); G03G 15/5008 (2013.01);
Abstract

An image forming apparatus, including a photosensitive member, a charger configured to charge the photosensitive member, a developer roller configured to contact the photosensitive member and supply a developer agent to the photosensitive member, a humidity sensor configured to detect humidity, and a controller is provided. The controller is configured to a voltage-application controlling process, in which the controller controls the photosensitive member and the developer roller to rotate, applies a charger-voltage to the charger, and applies a developer-voltage to the developer roller. In the voltage-application controlling process, the controller controls a voltage difference between the charger-voltage and the developer-voltage based on a peripheral velocity ratio of the developer roller with respect to the photosensitive member and the humidity.


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