发明名称 |
Light beam scanner unit with passing position and power control and image forming apparatus |
摘要 |
A light beam scanner unit includes a light beam generating unit for generating light beams at a fixed power, a polygon mirror for reflecting light beams generated from the light beam generating means toward a surface to be scanned, thereby scanning it, and a light beam power sensing unit for sensing light beam power for scanning a surface to be scanned with the polygon mirror. This light beam scanner unit further has a mirror contamination sensing unit for sensing contamination of the polygon mirror by comparing a sensing result obtained from the light beam power sensing unit when light beams are emitted by the light beam generating unit with a preset reference value.
|
申请公布号 |
US6344866(B1) |
申请公布日期 |
2002.02.05 |
申请号 |
US20010923343 |
申请日期 |
2001.08.08 |
申请人 |
TOSHIBA TEC KABUSHIKI KAISHA |
发明人 |
KOMIYA KENICHI;TANIMOTO KOJI;IDE NAOAKI;SAKAKIBARA JUN |
分类号 |
G02B26/12;(IPC1-7):G03G15/04 |
主分类号 |
G02B26/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|