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:
Mar. 01, 2005
Filed:
Oct. 04, 2002
Joseph M. Torgerson, Philomath, OR (US);
Robert N. K. Browning, Corvallis, OR (US);
Mark H. Mackenzie, Corvallis, OR (US);
Michael D. Miller, Shedd, OR (US);
Angela White Bakkom, Corvallis, OR (US);
Joseph M. Torgerson, Philomath, OR (US);
Robert N. K. Browning, Corvallis, OR (US);
Mark H. MacKenzie, Corvallis, OR (US);
Michael D. Miller, Shedd, OR (US);
Angela White Bakkom, Corvallis, OR (US);
Hewlett-Packard Development Company, LP, Houston, TX (US);
Abstract
An ink jet printhead includes a printhead substrate having a plurality of thin film layers and three side by side columnar arrays of drop generators formed in the printhead substrate and extending along a longitudinal extent. Each columnar array has ink drop generators that are separated by an ink drop generator pitch P. The ink drop generators produce ink drops having an ink drop volume that enables multi-pass printing of a resolution that is not less than 1/(2P) dpi along a print axis parallel to the longitudinal extent. Three columnar arrays of FET drive circuits formed in the printhead substrate are employed to energize corresponding columnar arrays of ink drop generators.