Liquid discharging apparatus

Details Liquid discharging apparatus Liquid discharging apparatus

Filed on

2006-06-29

Date issued

2008-08-19

Examiner

Feggins, K. (Department: 2861)

Patent Class

Incremental printing of symbolic information

SubClass

Ink jet

SubSubClass

Ejector mechanism

Type

Reexamination Certificate

Status

active

Patent number

07413287

Description

ABSTRACT:
A liquid discharging apparatus includes a plurality of liquid channels each having a discharge port, a control electrode extended on a surface defining the liquid channel from the discharge port toward an upstream side in a direction of flow of a liquid, an insulating film which coats the control electrode, and an electric potential control section which controls an electric potential of the control electrode with respect to the liquid. When a predetermined electric potential difference are set between the liquid and the control electrode, a liquid repellence of a surface of the insulating film is lowered due to an electrowetting phenomenon so that the liquid can move toward the discharge port on an area of the liquid channel in which the insulating film is formed. Accordingly, it is possible to provide the liquid discharging apparatus which is capable of discharging a liquid by a simple structure.

REFERENCES:
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patent: 5854644 (1998-12-01), Eun
patent: 5943074 (1999-08-01), Kashino et al.
patent: 6406131 (2002-06-01), Lerat et al.
patent: 6926382 (2005-08-01), Ito et al.
patent: 2005/0219330 (2005-10-01), Sugahara
patent: 0940255 (1999-09-01), None
patent: 1582351 (2005-10-01), None
patent: 2003 177219 (2003-06-01), None
patent: 2003 326712 (2003-11-01), None
patent: 2005 59215 (2005-03-01), None
European Patent Office, European Search Report in European Patent Appl'n No. 06013514.2-1251 (counterpart to above-captioned US patent appl'n) dated Jan. 22, 2008.

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