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:
Apr. 28, 2026
Filed:
Sep. 26, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A region of an image bearing member facing a developer bearing member at a developing portion is set as a first region, a region of the image bearing member facing the developer bearing member at the developing portion after a region of the developer bearing member facing the first region makes one revolution is set as a second region, and a region of the image bearing member between the first region and the second region is set as a third region. A first pattern for performing exposure and a second pattern for not performing exposure or for performing exposure with an exposure amount smaller than an exposure amount used for the first pattern is formed in the third region. A length of the second pattern is larger than a length of the first pattern in a rotational direction, and the first pattern and the second pattern are repetitively formed.