| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suspend the power distribution of a thermal head by detecting an abnormality when the thermal head is in the abnormality due to a malfunction or the like. <P>SOLUTION: This protection circuit 13 operates to detect an abnormality based on a voltage level of a head input signal line L1 for supplying an electrifying signal to the thermal head 15 and stops the supplying of the voltage by controlling a driving voltage supply circuit 14 when an abnormality is detected. <P>COPYRIGHT: (C)2003,JPO</p> |
