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:
Dec. 19, 2017
Filed:
Dec. 13, 2016
Konica Minolta, Inc., Tokyo, JP;
Hisashi Murata, Toyohashi, JP;
KONICA MINOLTA, INC., Tokyo, JP;
Abstract
An image formation device in which an image carrier is charged by a charging member includes: a power source configured to supply a charge voltage to the charging member, the charge voltage being formed such that an AC voltage is superimposed on a DC voltage; a detection unit configured to detect an alternating current value flowing through the charging member; and a control unit configured to control a peak-to-peak voltage value of the AC voltage, wherein the control unit executes: first processing of sequentially supplying a plurality of charge voltages from the power source to the charging member in non-image formation; second processing of obtaining, from an alternating current value detection result, a third approximate function indicating a difference value between a first approximate function and a second approximate function; and third processing of determining one of different predetermined ranges and determining a peak-to-peak voltage value in image formation.