| 摘要 |
<p>PURPOSE:To prevent the shear of print dots at recording of each line, by equally setting a process speed almost equal to that of a recording line, as to all white lines of a prescribed number positioned just before the recording line. CONSTITUTION:A heat sensing recording head 1 is provided with a heater 11 and lead electrodes 12 are connected to a synchronous driver 14 via gate circuits 131-134. Lead electrodes 16 are switchingly connected from a source driver 2 via diodes 17A, 17B, and the driver 2 controls the gates 131-134. A control section 3 receives a control signal 4 and a picture data 5, controls a selector 6 and operates a line buffer 9 via an address counter 8. The buffer 9 is provided with a full white discrimination circuit and outputs a normal speed sub-scanning signal for the full white line of a prescribed number just before a recording line and a high speed skip signal for other full white lines. Thus, printing can be attained without the generation of the shear of print dots.</p> |
