| 摘要 |
<p>PURPOSE:To perform the correction processing of printing at a high speed, by inputting the serial output of a shift register to which serial data is inputted at first to an operation apparatus due to hardware and again inputting the output thereof. CONSTITUTION:The data inputted to a shift register 11 are shifted in the shift register 11 in synchronous relation to a clock 19. After the shift register 11 is subjected to shift operation n-times and data al-an are set, the data are latched in a latch 13 by the output signal of a counter 26 and the heat generating time of each heat generating resistor 17 is controlled on the basis of the output signal of a counter 26 by an NAND gate 15 and the ink of an ink sheet is thermally transferred to paper. After the data are latched in the latch 13, the data of the shift register 11 in a head 10 are successively outputted to serial output 22 from the head data a1 in synchronous relation to the clock 19 to be inputted to an operation circuit 21. The output of the operation circuit 21 is again inputted to the shift register 11 of the head 10 through a selection circuit 26 which in turn selectively outputs the output 23 of the operation circuit 21 on the basis of a selection control signal 25.</p> |
