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:
Mar. 29, 2016
Filed:
Oct. 31, 2014
Hiroyuki Sugiyama, Kanagawa, JP;
Takamasa Ozeki, Kanagawa, JP;
Tomoko Takahashi, Kanagawa, JP;
Yoshinori Nakagawa, Kanagawa, JP;
Masahiko Shakuto, Kanagawa, JP;
Ryuji Yoshida, Kanagawa, JP;
Taichi Urayama, Kanagawa, JP;
Ryusuke Mase, Kanagawa, JP;
Shotaro Hoshi, Kanagawa, JP;
Hiroyuki Sugiyama, Kanagawa, JP;
Takamasa Ozeki, Kanagawa, JP;
Tomoko Takahashi, Kanagawa, JP;
Yoshinori Nakagawa, Kanagawa, JP;
Masahiko Shakuto, Kanagawa, JP;
Ryuji Yoshida, Kanagawa, JP;
Taichi Urayama, Kanagawa, JP;
Ryusuke Mase, Kanagawa, JP;
Shotaro Hoshi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a latent image bearing member, a charging unit, a charging power source, a latent image writing unit, a development unit, a transfer unit, a toner detector, and a controller. The controller causes a background fog pattern to be formed on a surface of the latent image bearing member. In addition to the background fog pattern, the controller causes a latent image to be developed to form a toner image used for position identification on the surface of the latent image bearing member. The controller identifies a time when the toner image used for position identification has entered a detection range of the toner detector based on a change in outputs of the toner detector to determine a time when each of sections of the background fog pattern enters the detection range based on the identified time.