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.

Date of Patent:
Mar. 29, 2005

Filed:

Apr. 18, 2003
Applicants:

Christopher A. Adkins, Lexington, KY (US);

Michael C. Campbell, Lexington, KY (US);

Donald F. Croley, Georgetown, KY (US);

Mark W. Fagan, Lexington, KY (US);

Brian T. Jones, Lexington, KY (US);

Timothy L. Strunk, Lexington, KY (US);

David E. Greer, Lexington, KY (US);

Inventors:

Christopher A. Adkins, Lexington, KY (US);

Michael C. Campbell, Lexington, KY (US);

Donald F. Croley, Georgetown, KY (US);

Mark W. Fagan, Lexington, KY (US);

Brian T. Jones, Lexington, KY (US);

Timothy L. Strunk, Lexington, KY (US);

David E. Greer, Lexington, KY (US);

Assignee:

Lexmark International, Inc., Lexington, KY (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J029/393 ;
U.S. Cl.
CPC ...
Abstract

A method of estimating an amount of ink contained in an ink reservoir includes the steps of determining a cumulative actual ink drop count of ink drops expelled from the ink reservoir; and determining an evaporation amount associated with the ink reservoir, wherein before a time threshold the evaporation amount is ignored, and upon reaching the time threshold the evaporation amount is used to compensate for an evaporation loss for the ink reservoir by adjusting the cumulative actual ink drop count to form an evaporation compensated drop count.


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