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:
Jul. 18, 2023
Filed:
Sep. 02, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Atsushi Sano, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes an exposure unit provided with a rotatable polygon mirror including a plurality of reflecting surfaces for scanning a light beam emitted from a light source to expose a photosensitive member with the light beam according to image information. A determining unit determines an end of lifetime of the exposure unit based on a detecting result of density of a toner image detected by two detecting units at a first timing and a detecting result of density of the toner image detected by the two detecting units at a second timing after the first timing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile