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. 06, 2013
Filed:
Aug. 28, 2011
Brian Robert Brown, Balmain, AU;
Norman Micheal Berry, Balmain, AU;
Garry Raymond Jackson, Balmain, AU;
Paul Timothy Sharp, Balmain, AU;
John Douglas Peter Morgan, Balmain, AU;
Kia Silverbrook, Balmain, AU;
Akira Nakazawa, Balmain, AU;
Michael John Hudson, Balmain, AU;
Samuel George Mallinson, Balmain, AU;
Paul Justin Reichl, Balmain, AU;
Christopher Hibbard, Balmain, AU;
Brian Robert Brown, Balmain, AU;
Norman Micheal Berry, Balmain, AU;
Garry Raymond Jackson, Balmain, AU;
Paul Timothy Sharp, Balmain, AU;
John Douglas Peter Morgan, Balmain, AU;
Kia Silverbrook, Balmain, AU;
Akira Nakazawa, Balmain, AU;
Michael John Hudson, Balmain, AU;
Samuel George Mallinson, Balmain, AU;
Paul Justin Reichl, Balmain, AU;
Christopher Hibbard, Balmain, AU;
Zamtec Ltd, Dublin, IE;
Abstract
A structure for an inkjet printhead is disclosed. The printhead structure has an elongate support structure for supporting a printhead integrated circuit, and ink conduits formed in the elongate support structure for supplying ink to an array of nozzles of the printhead integrated circuit. Each ink conduit includes cavities distributed along a roof of the ink conduit. An opening to each cavity has an upstream edge and a downstream edge. The upstream edge contacts the ink before the downstream edge during initial priming of the ink conduits from an ink supply. The upstream edge has a transition face between the ink conduit and the cavity interior, the transition face being configured to inhibit ink from filling the cavity by capillary action during initial priming of the ink conduit. This causes gas to be trapped within the cavity. The gas acts to compress pressure pulses in the ink.