Liquid droplet jetting apparatus

Details Liquid droplet jetting apparatus Liquid droplet jetting apparatus

2011-03-29

2011-03-29

Nguyen, Lamson D (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S068000, C347S014000

Reexamination Certificate

active

07914103

ABSTRACT:
In a liquid droplet jetting mode of jetting liquid droplets, a controller controls a piezoelectric actuator to perform a liquid droplet jetting operation in which volume of a pressure chamber is decreased to a decreased volume smaller than a predetermined volume, and then the volume of the pressure chamber is increased to an increased volume greater than the predetermined volume, and the volume of the pressure chamber is again decreased to the decreased volume. On the other hand, in a warm-up mode of heating the liquid in the pressure chamber, the controller controls the piezoelectric actuator to perform at least one of a first warm-up operation in which the volume of the pressure chamber is changed repeatedly between the predetermined volume and the increased volume, and a second warm-up operation in which the volume of the pressure chamber is changed repeatedly between the predetermined volume and the decreased volume.

REFERENCES:
patent: 5992963 (1999-11-01), Miyake et al.
patent: 6079805 (2000-06-01), Kishi
patent: 6116713 (2000-09-01), Maru
patent: 6270180 (2001-08-01), Arakawa et al.
patent: 2004/0135832 (2004-07-01), Usuda
patent: H11-138798 (1999-05-01), None
patent: 2004-148784 (2004-05-01), None
patent: 2005-211711 (2005-08-01), None
patent: 2006-240261 (2006-09-01), None
Japan Patent Office; Notice of Reasons for Rejection in Japanese Patent Application No. 2008-082492 (counterpart to the above-captioned U.S. patent application) mailed Apr. 13, 2010.

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