| 摘要 |
<p>PURPOSE:To exclude the effect due to the accumulation of charge separate from the original data to a CCD element due to a dark current in a printing head driving device using an analogue shift register having a plurality of CCD elements in order to arrange printing data corresponding to the arrangement of a plurality of the printing elements of a printing head. CONSTITUTION:Earthing (GND) is performed prior to transferring printing data to capacitors CA1, CB1, CA2, CB2... accumulating charge corresponding to the printing data constituting CCD elements to perform discharge.</p> |
