| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve such a problem that the more a quantity of the position aberration of a ruled line is reduced, the more an ink is wasted uselessly since a flushing quantity to be required is increased when the position aberration of the ruled line is correspondingly controlled by intensifying a micro tremor of a meniscus between routine flushings. <P>SOLUTION: A driving signal generating circuit 58 generates a driving signal including a first micro tremor pulse to give the micro tremor to the meniscus in a nozzle opening of a central portion nozzle opening group and a driving signal including a second micro tremor pulse to give the micro tremor which is more intensive than the first micro tremor pulse to the meniscus in a nozzle opening of an end portion nozzle opening group. When a flushing operation to jet a liquid droplet out of the nozzle opening forcibly is executed, a controller 16 implements control so that a liquid jetting volume per nozzle opening of the central portion nozzle opening group is smaller than a liquid jetting volume per nozzle opening of the end nozzle opening group. <P>COPYRIGHT: (C)2012,JPO&INPIT |
