Invention Grant
US08811441B2 Laser driving device, optical scanning device, image forming apparatus, and laser driving method
有权
激光驱动装置，光学扫描装置，成像装置和激光驱动方法
- Patent Title: Laser driving device, optical scanning device, image forming apparatus, and laser driving method
- Patent Title (中): 激光驱动装置，光学扫描装置，成像装置和激光驱动方法
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Application No.: US13024572Application Date: 2011-02-10
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Publication No.: US08811441B2Publication Date: 2014-08-19
- Inventor: Masaaki Ishida , Atsufumi Omori
- Applicant: Masaaki Ishida , Atsufumi Omori
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Limited
- Current Assignee: Ricoh Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-033088 20100218
- Main IPC: H01S3/00
- IPC: H01S3/00
Abstract:
A laser driving device that drives a semiconductor laser based on a light-emitting signal includes an expansion circuit that expands a pulse width of the light-emitting signal based on a known difference between the pulse width of the light-emitting signal and a lighting pulse width of the semiconductor laser when the semiconductor laser emits light according to the light-emitting signal, and a driver that outputs a driving signal to the semiconductor laser according to an output signal of the expansion circuit.
Public/Granted literature
- US20110199657A1 LASER DRIVING DEVICE, OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, AND LASER DRIVING METHOD Public/Granted day:2011-08-18
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