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	Semiconductor laser driver
	FUNAKI SHINSUKE; AKANABE YUUICHI; IKEDA HIROAKI; SHIYUDOU MASAHARU
	1983-05-31
著作权人	KONISHIROKU SHASHIN KOGYO KK
专利号	JP1983091474A
国家	日本
文献子类	发明申请
其他题名	Semiconductor laser driver
英文摘要	PURPOSE:To allow an electrophotographic copying machine which performs exposure by using a semiconductor to perform half-tone recording, by controlling a current through a resistance. CONSTITUTION:A photoreceptor 5 is exposed to light from a semiconductor laser 2 controlled on the basis of picture information 1, forming an electrophotographic picture. Transistors TR1-TR4 are turned on selectively according to 3-bit picture signals a1, a2, and a3 to vary the total resistance value of resistances R1-R4. Those resistances control a current supplied from a power source Vs to a semiconductor laser 15a, so the laser light output is varied stepwise to obtain gradations.
公开日期	1983-05-31
申请日期	1981-11-27
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/59282]
专题	半导体激光器专利数据库
作者单位	KONISHIROKU SHASHIN KOGYO KK
推荐引用方式 GB/T 7714	FUNAKI SHINSUKE,AKANABE YUUICHI,IKEDA HIROAKI,et al. Semiconductor laser driver. JP1983091474A. 1983-05-31.

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