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:
Dec. 02, 1997
Filed:
Oct. 28, 1994
Applicant:
Inventor:
Eric L Ahlvin, Vancouver, WA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347 24 ; 347 33 ;
Abstract
An inkjet printing mechanism has n printheads with nozzle sections and a carriage to carry the n printheads, where n.gtoreq.2. The carriage is movable through a print zone to one of two servicing positions at a service station beside the print zone. A wiper assembly is mounted at the service station to clean the nozzle sections of the printheads. The wiper assembly has n+m wipers where m wiper(s) clean at least one printhead when the carriage is located at a first servicing position, and the n wipers clean all n printheads simultaneously when the carriage is located at a second servicing position.