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:
Feb. 02, 2016
Filed:
May. 12, 2014
Ryusuke Mase, Kanagawa, JP;
Taichi Urayama, Kanagawa, JP;
Tomoko Takahashi, Kanagawa, JP;
Shotaro Hoshi, Kanagawa, JP;
Ryuji Yoshida, Kanagawa, JP;
Hiroyuki Sugiyama, Kanagawa, JP;
Masahiko Shakuto, Kanagawa, JP;
Hideki Zemba, Kanagawa, JP;
Takamasa Ozeki, Kanagawa, JP;
Yoshinori Nakagawa, Kanagawa, JP;
Ryusuke Mase, Kanagawa, JP;
Taichi Urayama, Kanagawa, JP;
Tomoko Takahashi, Kanagawa, JP;
Shotaro Hoshi, Kanagawa, JP;
Ryuji Yoshida, Kanagawa, JP;
Hiroyuki Sugiyama, Kanagawa, JP;
Masahiko Shakuto, Kanagawa, JP;
Hideki Zemba, Kanagawa, JP;
Takamasa Ozeki, Kanagawa, JP;
Yoshinori Nakagawa, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming apparatus includes a latent image carrier, a charging device, a latent image forming device, a developing device, a transfer device, a toner amount detector, and a control circuit to execute an imaging condition determination process. The control circuit obtains a linear approximation formula of a developing potential and an amount of toner according to an exposure potential of the patch pattern and a detected amount of toner to calculate a developing gamma and a developing start voltage according to a gradient of the linear approximation formula, determines target charging potential, exposure potential and developing bias according to the developing gamma and the developing start voltage, determines an amount of a background potential to be corrected according to a difference between the developing start voltage and a target developing start voltage obtained according to environmental information, and corrects the target charging potential.