Patent ID: 7073885
Filing Date: 2006-07-11
Classification: B41J

Abstract:
1. A liquid jetting apparatus comprising; a head member having a nozzle, a scanning mechanism that can cause the head member to relatively move with respect to the medium, a liquid jetting unit that can jet liquid from the nozzle, an out-of-jetting micro-vibrating-area setting unit that can set out-of-jetting micro-vibrating areas before and after a liquid-jetting area to which liquid is to be jetted from the nozzle while the head member is caused to relatively move by the scanning mechanism, a micro-vibrating unit that can cause liquid in the nozzle to minutely vibrate, an out-of-jetting micro-vibrating controlling unit that can cause the micro-vibrating unit to operate when the head member is located in the out-of-jetting micro-vibrating areas, and a signal generating unit that can generate an out-of-jetting micro-vibrating signal as a periodical signal having a predetermined waveform, wherein: the out-of-jetting micro-vibrating controlling unit is adapted to cause the micro-vibrating unit to operate based on the out-of-jetting micro-vibrating signal, a measuring unit that can measure a continuous operating time of the micro-vibrating unit by the out-of-jetting micro-vibrating controlling unit is provided, a standard-time storing unit that stores a predetermined standard time is provided, and a signal-generating controlling unit that can compare the continuous operating time and the standard time, and that can cause the signal generating unit to change the out-of-jetting micro-vibrating signal based on result of the comparison is provided.