| 摘要 |
PURPOSE:To prefent the disorder of pictures by a method in which the correlations of amplifying gain, charge code, and deflection amount is detected with regulation of deflection amounts at two points, and amplifying gain and charge code without bias of position with respect to all steps of deflection are set up. CONSTITUTION:At the time of setting deflection amounts, a deflection voltage power source circuit 42 is turned on by a micro computer 45, and charge code Scc of the lowest gain is set in a print charge voltage generation circuit 40, Reference is made to output POK of the charge detection circuit 43 for every time limit of a 10msec timer, and while increasing gain code, charge code Scc to be POK=0 is obtained. While increasing charge code Scc inversely, charge code of POK=1 is obtained likewise. During the recording, set gain is calculated and set in the charge voltage generator 40, and corrected amount of charge voltage is obtained for controlling recording. Since amplifying gain and charge code without bias of position can be set up, the disorder of pictures can be prevented even when the axis of ink injection is biased. |
