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. 03, 2017
Filed:
Mar. 02, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Yusuke Jota, Suntou-gun, JP;
Atsushi Toda, Fuji, JP;
Masahito Kato, Gotemba, JP;
Kenta Shibukawa, Mishima, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Voltages are applied to an image bearing member using at least three application voltage values which are larger than a discharge start voltage value and which have different magnitudes, at least one of the application voltage values having a value at which a direction of a current corresponding to the one of the application voltage values is reverse to those of currents corresponding to the other application voltage values. A relation between the application voltage value and the detection current value in a discharge area is calculated based on at least three application voltage values V, V, Vand at least three detection current values I, I, Idetected by a current detection portion in relation to at least three application voltage values V, V, Vand a voltage value Vat which the detection current value is zero is calculated based on the relation in the discharge area.