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:
May. 19, 2026

Filed:

May. 22, 2023
Applicant:

Fujifilm Business Innovation Corp., Tokyo, JP;

Inventors:

Daisuke Nakai, Kanagawa, JP;

Yutaka Kiuchi, Kanagawa, JP;

Tomohisa Suzuki, Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G03G 15/01 (2006.01); G03G 15/16 (2006.01);
U.S. Cl.
CPC ...
G03G 15/5054 (2013.01); G03G 15/0131 (2013.01); G03G 15/1605 (2013.01); G03G 15/5037 (2013.01); G03G 15/5058 (2013.01); G03G 15/75 (2013.01); G03G 15/751 (2013.01); G03G 2215/00059 (2013.01); G03G 2215/00063 (2013.01);
Abstract

An image forming apparatus includes: multiple intermediate-transfer-member density sensors that are disposed in the axial direction of an intermediate transfer member and that detect corresponding densities of a developer image having been subjected to first transfer onto the intermediate transfer member; and a processor configured to: in response to occurrence of a variation of density on a recording medium, if a relationship between the highest density value and the lowest density value among the density values detected by the respective intermediate-transfer-member density sensors indicates a first density state, output information indicating that the variation of density is caused in a process of or after a second-transfer process in which the developer image having been subjected to first transfer onto the intermediate transfer member is transferred onto the recording medium; and if the relationship indicates a second density state opposite to the first density state, output information indicating that the variation of density is caused in a process before the second-transfer process.


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