| 摘要 |
PURPOSE:To minimize the frequency of cleaning operations of a recording head by performing an inference according to a measuring output of a measuring means for measuring a quantity of state pertaining to a discharge condition of the recording head to control a cleaning means. CONSTITUTION:A control section 40 inputs a moisture signal of a recording head 1 involved as detected by a moisture detection means 52 to calculate an optimum driving interval To by a fuzzy inference from the number of sheets to be recorded brought in from a counter 53 and moisture according to a membership function and a rule read out of an RAM 43. When printing time (t) of four recording head 11-14 detected from a timing signal to be outputted from a timer 44 is larger than the optimum driving interval To calculated, a block drive means 51 is operated to perform a cleaning operation. |
