| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid droplet jetting device that jets a liquid droplet at high speed and ensures high quality landing of a liquid droplet. SOLUTION: In the liquid droplet jetting device, two or more drive pulses are applied to a pressure generating means 81 at predetermined intervals, the liquid droplet jetted according to the number of drive pulses are joined to one droplet before reaching a target medium, and the joined droplet lands on the target medium. In the liquid droplet jetting device, the drive pulses of the same pulse shape are output. When the period of a natural frequency determined by a liquid channel from a nozzle opening 11 to a fluid resisting part 32 is defined as Tc, the pulse width Tp of each drive pulse is set smaller than the period Tc. When the pulse width of the drive pulse is defined as TNn, the pulse interval TN1 between a first pulse and a second pulse is set in the range of 1.2×Tc to 1.5×Tc. Pulse intervals TN2, TN3, ..., TNn subsequent to the pulse interval TN2 are set smaller than TN1 but greater than the period Tc. COPYRIGHT: (C)2010,JPO&INPIT |
