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:
Jul. 19, 2011
Filed:
Jan. 31, 2011
Kia Silverbrook, Balmain, AU;
Roger Mervyn Lloyd Foote, Balmain, AU;
Angus John North, Balmain, AU;
Jennifer Mia Fishburn, Balmain, AU;
Paul David Lunsmann, Balmain, AU;
Lakshmi Channarayapatna Shankar, Balmain, AU;
Frederik Jacobus Crous, Balmain, AU;
Matthew Stewart Walker, Balmain, AU;
Samuel George Mallinson, Balmain, AU;
Paul Justin Reichl, Balmain, AU;
Kia Silverbrook, Balmain, AU;
Roger Mervyn Lloyd Foote, Balmain, AU;
Angus John North, Balmain, AU;
Jennifer Mia Fishburn, Balmain, AU;
Paul David Lunsmann, Balmain, AU;
Lakshmi Channarayapatna Shankar, Balmain, AU;
Frederik Jacobus Crous, Balmain, AU;
Matthew Stewart Walker, Balmain, AU;
Samuel George Mallinson, Balmain, AU;
Paul Justin Reichl, Balmain, AU;
Silverbrook Research Pty Ltd, Balmain, New South Wales, AU;
Abstract
An inkjet printer includes a printhead having a plurality of ink chambers fed be an ink inlet, each ink chamber having a heater element for ejecting drops of ink from a nozzle aperture of each chamber; a plurality of pressure pulse diffusing structure positioned between the plurality of ink chambers fed by the ink inlet, the plurality of pressure pulse diffusing structures for retarding a propagation of pressure waves generated by each ink chamber to adjacent ink chambers; and a controller for receiving print data and generating drive pulses to energize the heater elements in accordance with the print data. The controller increases the drive pulse energy during the printhead lifetime such that the drive pulse energy is never less than that of a preceding drive pulse.