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. 22, 2018
Filed:
Jan. 12, 2017
Kyocera Document Solutions Inc., Osaka, JP;
Tetsuya Toichi, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
An image forming apparatus includes a photosensitive drum, a primary transfer roller, first and second voltage applicators, first and second voltage controllers, a current detector, and a charging roller. The first voltage controller controls a voltage applied to the primary transfer roller through the first voltage applicator. The current detector detects a current value of a current flowing through the primary transfer roller. The second voltage controller controls a voltage applied to the charging roller through the second voltage applicator. The second voltage controller causes a voltage having a smaller absolute value than a dark potential of the photosensitive drum to be applied to the photosensitive drum during a transfer voltage control period. During the transfer voltage control period, the first voltage controller causes a voltage to be applied to the primary transfer roller, and the current detector detects the current value.