Ejection apparatus and method

Details Ejection apparatus and method Ejection apparatus and method

B - Operations, Transporting

41

J

B41J 2/06 (2006.01)

Patent

CA 2241471

An apparatus for ejecting material from a liquid has an ejection location (1) with an electrode (3). An electrical potential is applied to the ejection location electrode to form an electric field at the location together; liquid is supplied to the ejection location which contains the particulate material to be ejected from the ejection location. A secondary electrode (5, 8) is disposed adjacent to the ejection location and the voltage on the ejection location electrode is controllable so as to reduce the sensitivity of the head to influence by external electric fields.

Appareil permettant d'éjecter du matériau à partir d'un liquide, et possédant un site d'éjection (1) doté d'une électrode (3). Un potentiel électrique est appliqué sur l'électrode du site d'éjection pour former un champ électrique au niveau dudit site, en même temps que du liquide est acheminé vers le site d'éjection, liquide qui contient le matériau particulaire à éjecter depuis le site d'éjection. Une électrode secondaire (5, 8) est placée adjacente au site d'éjection et la tension de l'électrode du site d'éjection peut être régulée de manière à réduire le sensibilité de la tête à l'influence de champs électriques externes.

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