| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving method for a recording apparatus which fairly controls an allowable range of the number of recording elements driving simultaneously and gives stable and good printing quality, and a recording apparatus for the method. SOLUTION: An optional point in the range between PS and PL of an ink discharge speed correctly recorded when driving only one recording element is defined as a reference point. When defining an recording energy decreasing rate from the reference point to the lower limit PS in the range as a%, each resistance value of a plurality of recording elements as Rt, a resistance value of a common wiring connecting an end of the recording element and a power source generating a predetermined voltage as Rk, and the number of the recording elements to which the voltage is impressed simultaneously as n, they are made to satisfy an expression [(Rt+Rk)/(Rt+nRk)>=(1-a/100)1/2].
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