| 摘要 |
<p>PURPOSE:To reduce manufacturing cost in the heat sensitive head for the facsimile having a plurality of continuous heaters by adding clamping circuit to common group circuits, and connecting information driving devices to lead wires located at symmetrical positions with the heaters being held. CONSTITUTION:In the heat sensitive head for the facsimile having a plurality of continuous resistive heaters r1-r10, group separating diodes for separating element are not used, the clamp circuits comprising a clamping power source V2 and the like are added to the common group circuits, and the driving transistors 3 are connected to the lead wires A1-A4 and B1-B4 which are symmetrically located with the heaters being held. When the heaters r1, r2, r5, and r6 and the like are heated, a group identifying switch S1 is driven. When the heater r3, r4, r7, and r8 and the like are heated, an identifying switch S2 is driven. In this way, since the clamping circuits are used for switching the groups without using the separating diodes, the cost can be reduced.</p> |
