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. 13, 2021
Filed:
Feb. 25, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Yukihiro Abe, Kashiwa, JP;
Motoya Yamada, Matsudo, JP;
Toshiyasu Shirasuna, Moriya, JP;
Hironori Owaki, Kashiwa, JP;
Jun Ohira, Moriya, JP;
Yuu Nishimura, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided a method for controlling an electrophotographic apparatus including forming a first measurement image by performing first halftone processing on image data, forming a second measurement image by performing second halftone processing different from the first halftone processing on the image data, measuring densities of the first measurement image and the second measurement image, calculating a density difference between each of densities of the measurement images, determining whether the density difference satisfies a predetermined reference value, and applying a surface treatment on an electrophotographic photosensitive member if the density difference does not satisfy the reference value, during a non-image formation period.