| 摘要 |
<P>PROBLEM TO BE SOLVED: To more properly correct a drive voltage for piezoelectric elements and eject fluid more accurately. <P>SOLUTION: An ink temperature t is calculated on the basis of the ink viscosity μ (S310), if the calculated ink temperature t belongs to a zone where the ink temperature t is less than 15°C, a first value K1 is set to a proportionality coefficient K (S330), if the calculated ink temperature t belongs to a zone where the ink temperature t is equal to or higher than 15°C and less than 25°C, a second value K2 is set to the proportionality coefficient K (S340), and if the ink temperature t belongs to a zone where the ink temperature t is equal to or higher than 25°C and less than 40°C, a third value K3 is set to the proportionality coefficient K (S350), and a drive voltage V for a print head 40 (piezoelectric element 48) is set by adding a proportional term which is proportional to the ink temperature t by the proportionality coefficient K to the reference value V0 of the drive voltage. Accordingly, a more adequate drive voltage V can be set on the basis of the ink viscosity μ, and thus, accurate ejection of ink can be ensured. <P>COPYRIGHT: (C)2013,JPO&INPIT |
