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:
Feb. 25, 2003
Filed:
Jan. 30, 2001
Applicant:
Inventors:
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);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/145 ; B41J 2/15 ;
U.S. Cl.
CPC ...
B41J 2/145 ; B41J 2/15 ;
Abstract
A narrow ink jet printhead having four columnar arrays of ink drop generators configured for monochrome single-pass printing at a print resolution having a media axis dot spacing that is less than the columnar nozzle spacing of the ink drop generators. The ink jet printhead more particularly includes high resistance heater resistors and efficient FET drive circuits that are configured to compensate for variation in parasitic resistance presented by power traces.