Image formation device having determination of charge voltage
US9846383B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2016 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Dec 13, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0266
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.