Title:
DEVICE FOR DRIVING HEAD OF INKJET PRINTER AND DRIVING METHOD
Document Type and Number:
Japanese Patent JP2007001028
Kind Code:
A
Abstract:
To surely carry out detection of a nozzle state by making constant residual oscillation in a nozzle normal state after driving a piezoelectric actuator of an inkjet printer.
The piezoelectric actuator is driven by a pulse driving signal of a trapezoidal shape. A cavity volume is enlarged at a rise of the driving signal, whereby ink is taken in. The cavity volume is reduced at a fall of the driving signal, whereby the ink is extruded to bring about pressure variation. Thereafter, the residual oscillation generated in the cavity is detected. In the case of detecting the nozzle state from a state of the oscillation, the driving signal is set according to an ink temperature so as to make constant an amplitude of the residual oscillation.
Inventors:
SHINKAWA OSAMU
Application Number:
JP2005180473A
Publication Date:
January 11, 2007
Filing Date:
June 21, 2005
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
B41J2/045; B41J2/01; B41J2/055
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu