| 发明名称 | Drive circuit, light print head, and image forming apparatus | ||
| 摘要 | A drive circuit is provided for supplying a drive current to drive a plurality of driven elements. The drive circuit includes a switch circuit having an input terminal for receiving a drive signal alternately changing between an on state and an off state, and an output terminal connected to the driven elements; and a constant current circuit connected to the switch circuit for adjusting the drive current at a constant level. The constant current circuit is formed of a depletion type MOS transistor. | ||
| 申请公布号 | US8866866(B2) | 申请公布日期 | 2014.10.21 |
| 申请号 | US201313956552 | 申请日期 | 2013.08.01 |
| 申请人 | Oki Data Corporation | 发明人 | Nagumo Akira |
| 分类号 | B41J2/435;B41J2/45;B41J2/47;G03G15/04;G03G15/043;H05B33/08 | 主分类号 | B41J2/435 |
| 代理机构 | Kubotera & Associates, LLC | 代理人 | Kubotera & Associates, LLC |
| 主权项 | 1. A drive circuit for supplying a drive current to drive a plurality of driven elements each having a cathode terminal, an anode terminal, and a control terminal, comprising: a switch circuit having an input terminal for receiving a drive signal alternately changing between an on state and an off state, and an output terminal connected to the anode terminals of the driven elements; and a constant current circuit connected to the switch circuit for adjusting the drive current at a constant level, wherein said constant current circuit includes a depletion type MOS transistor, and said cathode terminals are connected to a power source with a first potential. | ||
| 地址 | Tokyo JP | ||