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:
Sep. 13, 2022
Filed:
Aug. 23, 2019
Applicant:
Memjet Technology Limited, Dublin, IE;
Inventors:
Simon Fielder, North Ryde, AU;
Alison Chong, North Ryde, AU;
David Tyvoll, North Ryde, AU;
Tim Hudson, North Ryde, AU;
Roger Davey, North Ryde, AU;
Ellaine Munton, North Ryde, AU;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 11/38 (2014.01); B41J 2/14 (2006.01); C09D 11/322 (2014.01);
U.S. Cl.
CPC ...
C09D 11/38 (2013.01); B41J 2/14 (2013.01); C09D 11/322 (2013.01);
Abstract
An aqueous-based inkjet ink for a thermal inkjet printhead includes: a pigment; 2 to 90 ppm ammonium ions; and an ink vehicle. The ink has a pH in the range of 8 to 9.5 and exhibits improved lifetime in thermal inkjet printheads with minimal loss of print quality.