Light source driving device with relationship-based drive signal generating circuit, optical scanning device, and image forming apparatus
US8270026B2 · kind B2 · utility
3Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2009 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | May 31, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04789
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A write control circuit includes a first data switching circuit that sets a correspondence relationship between signals from line buffers and input signals to a delay circuitry, based on a signal from a CPU; and a second data switching circuit that sets a correspondence relationship between output signals of the delay circuitry and drive signals, based on a signal from the CPU. This enables a plurality of light emitting sections to be driven properly, regardless of a main scanning direction and an arrangement of a plurality of light spots being in any of CASE-1 to CASE-4 in an optical scanning device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.