| 摘要 |
PURPOSE:To perform stable printing regardless of the number of recording electrodes, by providing a current control means for controlling the current supplied to a drive circuit and controlling the current supplied to the drive circuit corresponding to the number of the recording electrodes to which a current is simultaneously supplied. CONSTITUTION:When a printing signal is applied to a printing control circuit 10, a transistor 9 preliminarily selected on the basis of printing data is turned ON and the current corresponding to the number of data to be simultaneously printed is supplied to a drive circuit 8 by a current control circuit 13. The current supplied to the drive circuit 8 passes the transistor 9 being turned ON and the recording electrodes 6 connected thereto in series and further through the resistance layer 2 and conductive layer 3 directly under the recording electrodes 6 and the resistance layer 2 directly under a return path electrode roller 7 to flow to the return path electrode roller 7. By this mechanism, the resistance layer 2 generates heat and the ink of an ink layer 4 is melted to be transferred to recording paper 12. At this time, the current supplied to the drive circuit 8 is distributed by the current control circuit 13 corresponding to the number of the recording electrodes 6 simultaneously driven to flow. Therefore, stable printing can be performed regardless of the number of the recording electrodes 6 simultaneously driven. |
