Drive for semiconductor laser

OPT OpenIR > 半导体激光器专利数据库

	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.

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