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:
Mar. 18, 2025

Filed:

May. 03, 2023
Applicant:

Brother Kogyo Kabushiki Kaisha, Nagoya, JP;

Inventors:

Ayaka Komori, Nagoya, JP;

Keita Suzuki, Nishio, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 21/20 (2006.01); G03G 15/16 (2006.01);
U.S. Cl.
CPC ...
G03G 21/203 (2013.01); G03G 15/1665 (2013.01);
Abstract

A transfer nip is formed between a transfer member and a photosensitive drum. The transfer member is configured to transfer a toner image formed on the photosensitive drum to a sheet that passes through the transfer nip. A humidity sensor is configured to detect humidity. A sheet sensor is arranged upstream of the transfer member in a sheet conveyance direction. The sheet sensor is configured to detect a trailing end of the sheet. A controller is configured to: in response to an elapse of a particular period after the sheet sensor detects the trailing end of the sheet, change a transfer bias to be applied to the transfer member from a first transfer bias to a second transfer bias, the second transfer bias having a smaller absolute value than the first transfer bias; and change the particular period based on the humidity detected by the humidity sensor.


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