发明授权
- 专利标题： Light emitting apparatus, optical printhead, and image forming apparatus
- 专利标题（中）： 发光装置，光学打印头和图像形成装置
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申请号： US12318119申请日： 2008-12-22
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公开(公告)号： US08089501B2公开(公告)日： 2012-01-03
- 发明人: Akira Nagumo
- 申请人： Akira Nagumo
- 申请人地址： JP Tokyo
- 专利权人： Oki Data Corporation
- 当前专利权人： Oki Data Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Rabin & Berdo, P.C.
- 优先权： JP2007-334678 20071226
- 主分类号： B41J2/435
- IPC分类号： B41J2/435 ; B41J2/47
摘要：
A light emitting apparatus includes optical thyristors, a driver circuit that supplies a drive current to the thyristors so that the thyristors emit light, and a control circuit that controls the thyristors. Each thyristor includes an anode, a cathode connected to the ground, and a gate. The thyristor emits light when the drive current flows therethrough. The control circuit controls the gate, causing a control current to flow from the anode to the gate to turn on the thyristors. The control circuit applies a control voltage to the gate, the control voltage being higher than a voltage appearing across the gate and the cathode when the thyristor remains turned on.
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