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.:
Date of Patent:
Jun. 23, 2026
Filed:
Feb. 21, 2025
Canon Kabushiki Kaisha, Tokyo, JP;
Nobuhiko Tanaka, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus comprises a photosensitive drum, an exposure head and a control unit. The control unit can execute a first mode and a second mode in which the drum is rotated at a second rotational speed that is a/b times of the first rotational speed of the first mode. In exposure of the second mode, the control unit controls a cycle of a light emission timing at a cycle of b/a times of a cycle of the first mode, controls the light-emitting units to cause, among n rows, the light-emitting units of (n×((d−c)/d)) rows to not emit light, and sets a drive current so that an amount of light matches (a×d)/(b×c) times of the first mode.