Liquid transporting apparatus and ink-jet printer

Details Liquid transporting apparatus and ink-jet printer Liquid transporting apparatus and ink-jet printer

2011-01-25

2011-01-25

Rahll, Jerry T (Department: 2874)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07874652

ABSTRACT:
A liquid transporting apparatus includes a channel unit in which a plurality of pressure chambers are provided, and a piezoelectric actuator which changes individually a volume of each of the pressure chambers. The piezoelectric actuator includes a vibration plate, a piezoelectric body provided on one surface of the vibration plate, and electrodes which apply an electric voltage to the piezoelectric body. The other surface of the vibration plate is joined to the channel unit to close openings of the pressure chambers, and the one surface of the vibration plate includes an uncovered area which is not covered with the piezoelectric body. Since a heater is provided in the uncovered area, and an electrode for applying an electric current is provided separately from the electrodes of the piezoelectric actuator, it is possible to operate the heater even when the piezoelectric actuator is being driven.

REFERENCES:
patent: 2005/0052486 (2005-03-01), Kodama
patent: 2005/0285911 (2005-12-01), Sugahara
patent: 2000094674 (2000-04-01), None
patent: 2000198192 (2000-07-01), None
patent: 20000198192 (2000-07-01), None
patent: 2005104135 (2005-04-01), None
patent: 2005144594 (2005-06-01), None
patent: 2006-44242 (2006-02-01), None

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