Xi'an Institute of Optics and Precision Mechanics,CAS
Drive for semiconductor laser | |
其他题名 | Drive for semiconductor laser |
NAGASEKI KIYOTO; ASADA KENICHIRO | |
1990-01-10 | |
专利权人 | RICOH CO LTD |
公开日期 | 1990-01-10 |
授权国家 | 日本 |
专利类型 | 发明申请 |
摘要 | PURPOSE:To express an excellent gradation without deteriorating the resolution of a picture image by generating pulses in response to a picture data by a fist modulation means, driving a semiconductor laser and modulating the amplitude of pulses in response to the picture data by a second modulation means. CONSTITUTION:Modulating beams emitted from a laser diode 22 are changed into parallel beams by a collimator lens 26, and deflected repeatedly by a deflecting system 28 turned and driven by a motor 27. Modulating beams from the deflecting system 28 are scanned on a photosensitive drum 30 through a condenser lens 29, and the photosensitive drum 30 is rotated and driven by the motor and charged uniformly by a charger, and exposed by modulating beams, thus forming an electrostatic latent image. The electrostatic latent image is developed by a developing machine, and transferred onto transfer paper by a transfer device. Beams from the condenser lens 29 are reflected by a mirror 31 on the outside of a picture region and detected by a photo-detector 32, and the modulation of the laser diode 22 is started synchronized with the output signal of the photo-detector 32. |
其他摘要 | 目的:通过用第一调制装置响应图象数据产生脉冲,驱动半导体激光器并响应图象数据通过第二调制来调制脉冲的幅度,从而表现出良好的层次而不降低图象的分辨率手段。构成:由激光二极管22发射的调制光束被准直透镜26转换成平行光束,并且被由马达27转动和驱动的偏转系统28反复偏转。来自偏转系统28的调制光束在感光鼓上被扫描30通过聚光透镜29,感光鼓30被马达驱动旋转并被充电器均匀充电,并被调制光束曝光,从而形成静电潜像。静电潜像由显影机显影,并通过转印装置转印到转印纸上。来自聚光透镜29的光束被图像区域外侧的反射镜31反射并由光电检测器32检测,并且激光二极管22的调制开始与光电检测器32的输出信号同步。 |
申请日期 | 1988-06-24 |
专利号 | JP1990006161A |
专利状态 | 失效 |
申请号 | JP1988156370 |
公开(公告)号 | JP1990006161A |
IPC 分类号 | B41J2/44 | B41J3/00 | G03G15/04 | H01S5/06 | H04N1/23 | H04N1/405 | H01S3/103 |
专利代理人 | - |
代理机构 | - |
文献类型 | 专利 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/69000 |
专题 | 半导体激光器专利数据库 |
作者单位 | RICOH CO LTD |
推荐引用方式 GB/T 7714 | NAGASEKI KIYOTO,ASADA KENICHIRO. Drive for semiconductor laser. JP1990006161A[P]. 1990-01-10. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
JP1990006161A.PDF(310KB) | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 |
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