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. 14, 2001
Applicant:
Inventor:
Eric Joseph Johnson, San Diego, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/165 ;
U.S. Cl.
CPC ...
B41J 2/165 ;
Abstract
A method of automatically servicing the orifices of an inkjet printhead particularly beneficial for inexpensive fixed or stationary printhead printers capable or printing onto either a series of discrete media sheets or onto a continuous media web. The method includes orifice servicing at the start of each character printing job and at periodic intervals during completion of print jobs. Printing ink is used for automatic cleaning or flushing of the printhead orifices.