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. 12, 2003
Filed:
Feb. 18, 1999
Applicant:
Inventors:
Antoni Murcia, Barcelona, ES;
Xavier Bruch, Barcelona, ES;
Josë Luís Valero, Barcelona, ES;
Xavier Girones, Tarragona, ES;
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/9393 ;
U.S. Cl.
CPC ...
B41J 2/9393 ;
Abstract
A method for detecting clogged or otherwise anomalous nozzles in an ink jet printing device having a printer head containing at least one nozzle configured to eject droplets of ink, the method including sending an instruction to the printer head to eject droplets of ink, generating an output signal from a detecting means configured to detect a passage of droplets past the detecting means and applying an algorithm to the output signal which is configurable to check a correct functioning of the nozzles.