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:
Apr. 09, 2002
Filed:
Jul. 13, 2000
Applicant:
Inventors:
Bret Taylor, Vancouver, WA (US);
Jefferson P. Ward, Brush Prairie, WA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 ; B41J 2/195 ;
U.S. Cl.
CPC ...
B41J 2/175 ; B41J 2/195 ;
Abstract
An ink container for an inkjet printer includes a body having a first ink chamber. The body also has a second ink chamber, with a fluid passage connecting the chambers. The second ink chamber has an elongated capillary portion with a light transmissive window revealing the presence of ink in the capillary portion. The first ink chamber is the primary ink storage chamber, and contains an ink-retaining foam element that contacts a capillary feature of the passage. The foam is compressed at one portion to provide a capillarity gradient, and the second chamber capillary has a capillary gradient.