Exposure device, exposure system, light-emitting element circuit board and image forming apparatus
US7954917B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2007 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Feb 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1242
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure device includes a circuit board, a light-emitting element member, a driving signal generating unit and a first voltage supply unit. The light-emitting element member is disposed on the circuit board. The light-emitting element includes plural light-emitting elements arranged in a line and plural switching elements disposed so as to correspond to the plural light-emitting elements. When the plural switching elements sequentially set the respective light-emitting elements to be in a state where the respective light-emitting elements can turn on, the respective light-emitting elements turn on sequentially. The driving signal generating unit is disposed on the circuit board. The driving signal generating unit generates driving signals for driving the respective light-emitting elements arranged in the light-emitting element member. The first voltage supply unit is disposed on the circuit board. The voltage supply unit supplies a first predetermined voltage to the light-emitting element member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.