Piezoelectric head inspection device and droplet jetting device

Details Piezoelectric head inspection device and droplet jetting device Piezoelectric head inspection device and droplet jetting device

2006-10-16

2009-10-13

Nguyen, Lam S (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

C347S010000, C347S068000

Reexamination Certificate

active

07600845

ABSTRACT:
The present invention provides an inspection device for a piezoelectric head. The piezoelectric head includes: a pressure chamber filled with liquid, a liquid supply channel that supplies the liquid to the pressure chamber, a nozzle at which droplets are jetted from the pressure chamber, and a piezoelectric element that applies pressure to the pressure chamber. The inspection device includes: a detection component that, when the piezoelectric element is driven on the basis of a predetermined detection signal, outputs a signal corresponding to behavior of an acoustic vibration system of the piezoelectric head; and a judgment component that, on the basis of the detection signal and the signal outputted by the detection component, judges for a cause of defective ejections at the piezoelectric head.

REFERENCES:
patent: 2005/0057596 (2005-03-01), Shinkawa et al.
patent: 2000-318183 (2000-11-01), None
patent: 2000-355100 (2000-12-01), None
patent: 2004-276273 (2004-10-01), None
patent: 2004-284191 (2004-10-01), None
Ogo and Mita,Shisutemu Seigyo Riron Myumon(Introduction to System Control Theory), Jikkyo Shuppan Co., Ltd. (1979), pp. 121-130.
Ogo and Mita,Shisutemu Seigyo Riron Nyumon(Introduction to System Control Theory), Jikkyo Shuppan Co., Ltd. (1979), pp. 173-178.
Mita,Dejitaru Seigyo Riron(Digital Control Theory), Shokodo Co., Ltd. (1984), pp. 7-20.

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