Image forming apparatus with a control unit that controls a charging bias voltage
US8023845B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2007 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Jun 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/021
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a movable image bearing member; charging means for electrically charging the image bearing member; voltage applying means for applying to the charging means an oscillating voltage including an oscillating component and a constant component in one cycle; discharging means for selectively discharging an electrically charged surface of the image bearing member to form an electrostatic latent image; and changing means for changing an application time of the constant component during the one cycle depending on a spatial frequency, with respect to a movement direction of the image bearing member, of the electrostatic latent image to be formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.