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:
May. 29, 2018
Filed:
Jul. 06, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Satoru Yamamoto, Noda, JP;
Toshiyuki Miyake, Abiko, JP;
Katsuya Nakama, Nagareyama, JP;
Koji Yumoto, Toride, JP;
Riki Fukuhara, Kashiwa, JP;
Akihiro Kawakita, Abiko, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an image forming apparatus having high usability and securing both image quality and productivity. The image forming apparatus changes a rotational speed of a secondary transfer member depending on a basis weight of a sheet. The image forming apparatus performs digital sub-scanning scaling of correcting image data and polygon sub-scanning scaling of controlling a scanning speed during image formation so as to cancel out image deformation caused by change in rotational speed of the secondary transfer member. When giving priority to image quality, the image forming apparatus performs processing of the digital sub-scanning scaling and the polygon sub-scanning scaling, and when giving priority to productivity, the image forming apparatus performs only processing of digital sub-scanning scaling.