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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