Optical writing unit, a driving method thereof, and an image forming apparatus
US7068295B2 · kind B2 · utility
16Cited by
19References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Jun 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/1903
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical writing unit is capable of producing a high-quality image in which the formation of white stripes and black stripes, due to uneven intervals between light emitting devices, is suppressed. The unevenness, often occurring at the junction part of two-light emitting diode array chips, is compensated for by increasing or decreasing the light volume of light emitting devices that are located on and near the edge of a light emitting device array chip, such that a property value concerning an exposure intensity distribution falls within a predetermined range for an effective image domain in its entirety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.