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:
Nov. 12, 2019
Filed:
Feb. 09, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroshi Tomii, Kashiwa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a photosensitive member, a charging unit, an exposure unit, a developing unit, a transfer unit, and a controller configured to control the photosensitive member, the charging unit, the exposure unit, the developing unit, and the transfer unit to form a measurement image on the sheet, and acquire read data on the measurement image output from a reading device. The measurement image includes a first measurement image and a second measurement image. The controller forms the first measurement image based on a first image signal value and forms the second measurement image based on a second image signal value different from the first image signal value. The controller detects a streak included in the first measurement image or the second measurement image and determines an error based on a detection result.