| 摘要 |
PURPOSE:To make always supply of toner in a proper quantity possible by providing action where even if a plural number of dots is printed simultaneously, the total of printed dots is counted and toner is supplied at stated number. CONSTITUTION:Dot signals DOT1-DOTM are counted with counters 1-1-1-M respectively a carry at N counts (N>=M>=Z) is generated and it is latched at latches 2-1-2-M. The latches 2-1-2-M are read in series by a parallel-series conversion circuit successively and counted with a counter 4. Through the process, the counter 4 obtains the number of dotted printing obtained by totaling respective dotted printing, and when the number of this dotted printing reaches to the stated number, a driver 5 outputs a driving signal for stated time to drive a motor 6 with supply of toner. |
