发明名称 |
Optical writing device and image forming apparatus |
摘要 |
A first beam separation device is arranged either to allow the light beams to enter and pass or to reflect the light beams in accordance with a direction of entrance of the light beams. A second beam separation device is provided either to allow or to reflect the light beams having passed through the first beam separation device in accordance a wavelength thereof. The light beam passing through the second beam separation device scans one of plural scan objectives and the light beam reflected by the second beam separation device is further reflected by the first beam separation device and then scans the other one of the plural scan objectives. A first imaging device is provided to correct a f-theta (f&thetas;) performance and a curvature of an imaging plane to enable the light beams to scan the plural scan objectives at a constant speed. The first imaging device is integral with the first beam separation device.
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申请公布号 |
US7880760(B2) |
申请公布日期 |
2011.02.01 |
申请号 |
US20090396140 |
申请日期 |
2009.03.02 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
BANNAI KAZUNORI;IMAKI DAISUKE |
分类号 |
B41J2/435;B41J2/47;G02B26/10 |
主分类号 |
B41J2/435 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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