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:
Aug. 15, 2023
Filed:
May. 27, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Yuya Nagatomo, Ibaraki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a photosensitive member, a charging member configured to charge a surface of the photosensitive member, a power supply configured to apply the DC voltage to the charging member, a current detection unit configured to detect a current value flowing from the charging member to the photosensitive member, a calculation unit configured to calculate a first voltage value based on applied voltages with different voltage values and detected current values, and a setting unit configured to set a second voltage value to be applied to the charging member during forming of an image. The setting unit sets the second voltage value by adding the first voltage value, a target voltage value, and a correction value corresponding to a peripheral speed of the photosensitive member during forming of the image.