Liquid channel structure and liquid-droplet jetting apparatus

Details Liquid channel structure and liquid-droplet jetting apparatus Liquid channel structure and liquid-droplet jetting apparatus

2007-03-28

2009-10-06

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000, C347S092000

Reexamination Certificate

active

07597427

ABSTRACT:
An ink channel in a channel unit includes a pressure chamber and a throttle channel in which ink flows along different planes and a communication hole which communicates the pressure chamber and the throttle channel. A center line of the communication hole deviates from a center line of the pressure chamber in a width direction of the pressure chamber, and also deviates from a center line of the throttle channel in a width direction of the throttle channel. Consequently, a swirling flow is generated in connection portions at which the pressure chamber and the throttle channel are connected to the communication hole, thereby effectively preventing bubbles from staying.

REFERENCES:
patent: 6290340 (2001-09-01), Kitahara et al.
patent: 6431688 (2002-08-01), Shin et al.
patent: 6846069 (2005-01-01), Ito et al.
patent: 7503642 (2009-03-01), Hibi
patent: 2006/0044360 (2006-03-01), Sugahara
patent: 8309971 (1996-11-01), None
patent: 2003-326706 (2003-11-01), None

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