| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid injection apparatus capable of allowing a wiping device to perform wiping at an appropriate frequency, and decreasing an abrasion speed of a nozzle formation surface of a liquid injection head to accompany the wiping.SOLUTION: Ink droplets are injected from color-specific nozzle groups formed on a liquid injection head, and a white base layer and a color image layer are printed. At this time, print data is determined (S11), and a value Wup (weighting coefficient for white) per discharge (dot) is added to a count value WR of a counter if the print data indicates white printing (S12). If the print data indicates color printing, a value Cup (weighting coefficient for color (CMYK)) (<Wup) per discharge (dot) is added to the count value WR of the counter (S13). If the count value WR of the counter, that is, a sum of values obtained by multiplying discharge counts of the respective nozzle groups by the weighting coefficients is equal to or greater than a specified value (WR≥specified value), a wiping operation is performed (S14, S15). |
