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:
Aug. 26, 2008
Filed:
Aug. 17, 2005
Hajime Motoyama, Moriya, JP;
Hajime Kaji, Abiko, JP;
Naoto Yamada, Kawasaki, JP;
Yoshitaka Yamazaki, Toride, JP;
Junichi Noguchi, Toride, JP;
Takayuki Kawakami, Hakusan, JP;
Satoshi Ogawara, Abiko, JP;
Yushi Oka, Abiko, JP;
Akihito Mori, Toride, JP;
Hajime Motoyama, Moriya, JP;
Hajime Kaji, Abiko, JP;
Naoto Yamada, Kawasaki, JP;
Yoshitaka Yamazaki, Toride, JP;
Junichi Noguchi, Toride, JP;
Takayuki Kawakami, Hakusan, JP;
Satoshi Ogawara, Abiko, JP;
Yushi Oka, Abiko, JP;
Akihito Mori, Toride, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus generates a PWM signal corresponding to input image data and controls a timing of a light source to emit a light beam based on the PWM signal in order to perform tone reproduction. The image forming apparatus includes a data processing unit configured to generate the PWM signal for one pixel based on image data for continuous two pixels in the image data. The data processing unit selects an origin of pulse growth in generation of the PWM signal for one pixel in accordance with the image data for the two pixels to generate the PWM signal.