发明名称 |
Image forming apparatus and light emitting apparatus |
摘要 |
A light emitting apparatus including a photosensitive member and an exposure device including a light emitting device array made up of a plurality of light emitting devices arranged in a direction of main scan across a moving direction of the photosensitive member and a switching device array made up of a plurality of switching devices arranged and connected to the light emitting devices in one-to-one relation. The switching device array is divided into a plurality of groups, a first group of leads connected in common to first terminals of the switching devices for each of the plural groups of switching devices, a second group of leads connected to second terminals of each of the switching devices, and a third group of leads, each of the third group of leads connected to third terminals of each switching device in a respective group of switching devices. The apparatus further includes a drive device for operating the simultaneous light emitting circuits to apply a first scan signal to the first group of leads, a voltage signal with one polarity to the third group of leads in synch with the first scan signal, and a discharge signal to the second group of leads, thereby causing capacitors to be discharged.
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申请公布号 |
US6121994(A) |
申请公布日期 |
2000.09.19 |
申请号 |
US19980219749 |
申请日期 |
1998.12.23 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KURIBAYASHI, MASAKI;KOUMURA, NOBORU;NAGASE, YUKIO;NARITA, IZUMI;MASHIMO, SEIJI |
分类号 |
B41J2/44;B41J2/45;B41J2/455;G03G15/01;G06K15/12;(IPC1-7):B41J2/47 |
主分类号 |
B41J2/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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