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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.

Patent No.:

US 12436481 B1

PDFFull Text
Date of Patent:
Oct. 07, 2025

Filed:

Nov. 17, 2023

Image forming apparatus with control of plural power sources

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Yusuke Shimizu, Kanagawa, JP;

Tomoo Akizuki, Kanagawa, JP;

Norihiro Shirahata, Tokyo, JP;

Yusuke Sakamoto, Tokyo, JP;

Shunsuke Mizukoshi, Tokyo, JP;

Assignee:

Canon Kabushiki Kaisha, Tokyo, JP;

Attorney:

Venable LLP

Primary Examiner:

Hoang X Ngo

Int. Cl.
CPC ...
G03G 15/02 (2006.01); G03G 15/043 (2006.01); G03G 15/06 (2006.01);
U.S. Cl.
CPC ...
G03G 15/065 (2013.01); G03G 15/0266 (2013.01); G03G 15/043 (2013.01); G03G 2215/021 (2013.01);
Abstract

In an image forming apparatus, rotation of an image bearing member is started and stopped in a contact state between the image bearing member and a developing member. During a post-rotation operation, a controller ends application of a charging voltage after changing the charging voltage stepwisely to first and second charging voltages. The controller ends application of a developing voltage after changing the developing voltage stepwisely at a developing position to first and second developing voltages in synchronism with the first and second charging voltages. A potential difference between each of surface potentials of first and second regions and an associated one of the first and second developing voltages is maintained within a predetermined range. The controller carries out control so that an absolute value of the surface potential of at least one of the first and second regions is made low by passing a current under application of a transfer voltage.

Find Patent Forward Citations

Shimizu, Yusuke. (2025). Image forming apparatus with control of plural power sources (U.S. Patent No. 12436481). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12436481

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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