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	Optical scanning apparatus and color image forming apparatus therewith
	NAKAHATA, HIROSHI
	2014-05-27
著作权人	CANON KABUSHIKI KAISHA
专利号	US8736651
国家	美国
文献子类	授权发明
其他题名	Optical scanning apparatus and color image forming apparatus therewith
英文摘要	An optical scanning apparatus that is capable of increasing use life of a semiconductor laser by decreasing the emission time for sensors that are independently provided for synchronous control, light control, and focus control. A laser beam emitted from a light source is deflected by a deflector, and scans a photoconductor. A beam splitter arranged between the light source and the deflector separates the laser beam, which is detected by a first detection unit. A second detection unit arranged in a non-image forming area detects the deflected laser beam to detect defocus amount. A focusing unit focuses the scanning laser beam based on a detection result of the second detection unit. A control unit controls the light amount of the laser beam applied to an image forming area based on a detection result of the first detection unit at the timing when the second detection unit detects the laser beam.
公开日期	2014-05-27
申请日期	2013-01-24
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/32993]
专题	半导体激光器专利数据库
作者单位	CANON KABUSHIKI KAISHA
推荐引用方式 GB/T 7714	NAKAHATA, HIROSHI. Optical scanning apparatus and color image forming apparatus therewith. US8736651. 2014-05-27.

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