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:
Feb. 15, 2011
Filed:
Aug. 15, 2008
Edward Ellis Esdaile-watts, Balmain, AU;
Kent Benjamen Kwan, Balmain, AU;
Nicholas Kenneth Abraham, Balmain, AU;
Christopher Hibbard, Balmain, AU;
Kia Silverbrook, Balmain, AU;
Edward Ellis Esdaile-Watts, Balmain, AU;
Kent Benjamen Kwan, Balmain, AU;
Nicholas Kenneth Abraham, Balmain, AU;
Christopher Hibbard, Balmain, AU;
Kia Silverbrook, Balmain, AU;
Silverbrook Research Pty Ltd, Balmain, New South Wales, AU;
Abstract
A pressure-regulating chamber for maintaining ink contained in the chamber at a predetermined first level relative to a printhead. The chamber comprises: an inlet port for connection to an ink reservoir via an ink supply line; an outlet port for connection to an ink inlet of a printhead via an upstream ink line; an air vent open to atmosphere; and a float valve for maintaining the predetermined first level of ink by controlling a flow of ink into the inlet port. The float valve is biased towards a closed position by a positive ink pressure at the inlet port.