The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2001
Filed:
Jul. 17, 1998
Guy Charles Fernley Newcombe, Cambridge, GB;
Neil Emerton, Cambridge, GB;
John Teape, Cambridge, GB;
Richard Wilhelm Janse Van Rensburg, Cambridge, GB;
Peter John Taylor, Cambridge, GB;
Tonejet Corporation PTY, Ltd., Eastwood, AU;
Abstract
An apparatus for ejecting material from a liquid has an ejection location,) with an electrode (,). 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 (,) 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.