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	Drive for semiconductor laser
	NAGASEKI KIYOTO; ASADA KENICHIRO
	1990-01-10
著作权人	RICOH CO LTD
专利号	JP1990006161A
国家	日本
文献子类	发明申请
其他题名	Drive for semiconductor laser
英文摘要	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.
公开日期	1990-01-10
申请日期	1988-06-24
状态	失效
内容类型	专利
源URL	[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. 1990-01-10.

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