| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a self-scan type light emitting element array chip which is used in an optical writing head operable with a small number of external wiring, can light a plurality of emission points, and can interrupt writing of data in the halfway. <P>SOLUTION: At a shifting part 1, a cathode of an odd-numbered thyristor is connected to aψ1 wiring line 16, and a cathode of an even-numbered thyristor is connected to aψ2 wiring line 17. A gate of each thyristor is connected via a coupling diode 43 to a gate of the next thyristor on the right, and connected via a gate load resistance 42 to a power supply wiring line 15. Moreover, gates of first to fourth thyristors are connected to a gate of a thyristor 45 of a light emitting part 2 via a coupling diode 44. On the other hand, fifth and sixth shifting part thyristors have no corresponding light emitting part thyristors to be connected with. Since the corresponding light emitting part thyristors are not set, writing of data can be interrupted. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
