发明授权
US5912694A Laser diode driving circuit, semiconductor integrated circuit for
driving laser diode, and image recording apparatus
失效
激光二极管驱动电路,用于驱动激光二极管的半导体集成电路和图像记录装置
- 专利标题: Laser diode driving circuit, semiconductor integrated circuit for driving laser diode, and image recording apparatus
- 专利标题(中): 激光二极管驱动电路,用于驱动激光二极管的半导体集成电路和图像记录装置
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申请号: US923968申请日: 1997-09-05
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公开(公告)号: US5912694A公开(公告)日: 1999-06-15
- 发明人: Hiroyuki Miyake , Chikaho Ikeda
- 申请人: Hiroyuki Miyake , Chikaho Ikeda
- 申请人地址: JPX Tokyo
- 专利权人: Fuji Xerox Co., Ltd.
- 当前专利权人: Fuji Xerox Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX8-239040 19960910
- 主分类号: H01S5/00
- IPC分类号: H01S5/00 ; B41J2/47 ; H01S5/042 ; H01S5/062 ; H01S5/068 ; H01S5/0683 ; H01S3/00 ; H01S3/096
摘要:
The present invention relates to a laser diode driving circuit for supplying a drive current to a laser diode, a semiconductor integrated circuit for driving the laser diode, and an image recording apparatus in which a step of executing a scanning on a predetermined member to be scanned with a laser beam holding image information is included in an image recording step. The laser diode is certainly kept in a no light emitting state at a timing when the laser diode should be kept in the no light emitting state and is allowed to emit a laser beam of the light quantity faithfully corresponding to the drive current at a timing when the drive current is supplied to the laser diode. A bias current out of the bias current and a drive current which are supplied to a laser diode 1 is further divided into a first bias current and a second bias current. Normally, only the first bias current is supplied to the laser diode. The second bias current is supplied and stopped in a manner similar to the drive current.