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:
Jul. 18, 2000
Filed:
May. 28, 1997
Applicant:
Inventors:
Gregory P Thornton, Tigard, OR (US);
Donald B MacLane, Portland, OR (US);
Gregory K Justice, Tualatin, OR (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347-7 ;
Abstract
An improved method for providing a continuous supply of liquid ink to an ink jet print head is provided. The method maintains an estimate in a memory source of the amount of liquid in a reservoir that is available to the print head. The estimate is periodically updated by information received from an ink sensor in the reservoir. By comparing the estimate to a plurality of ranges, the method determines whether additional ink may be added to the reservoir.