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:
Aug. 30, 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 printer comprising a printhead and a pressure-regulating chamber containing ink at a predetermined first level relative to the printhead. The chamber comprises an outlet port, a return port positioned in a base of the chamber, a snorkel extending from the return port and terminating at a snorkel outlet positioned above the first level of ink, and an air vent open to atmosphere. An upstream ink line interconnects the outlet port and an ink inlet of the printhead. A downstream ink line interconnects the return port and an ink outlet of the printhead. The downstream ink line has a section looping below the first level of ink. In a printing configuration, a second level of ink in the snorkel is equal to the first level of ink in the chamber.