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:
Jan. 18, 2022
Filed:
Aug. 06, 2020
Akio Kosuge, Kanagawa, JP;
Yuji Suzuki, Tokyo, JP;
Daisuke Takahashi, Kanagawa, JP;
Shinichi Akatsu, Kanagawa, JP;
Daisuke Ito, Kanagawa, JP;
Akio Kosuge, Kanagawa, JP;
Yuji Suzuki, Tokyo, JP;
Daisuke Takahashi, Kanagawa, JP;
Shinichi Akatsu, Kanagawa, JP;
Daisuke Ito, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image forming apparatus includes a photoconductor, a charger, a charge remover, and control circuitry. The charger is configured to charge the photoconductor. The charge remover is configured to remove charge from a surface of the photoconductor by light and electric discharge. The control circuitry is configured to: estimate a surface potential that the photoconductor has after the photoconductor is charged by the charger, based on a characteristic value of the photoconductor and a value of a current flowing through the charger after the charge remover removes charge from the photoconductor; and control a charging bias applied to the charger, based on the surface potential estimated.