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. 06, 1999
Filed:
Apr. 22, 1996
Kenneth James Harshbarger, Lexington, KY (US);
Ajay Kanubhai Suthar, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
The invention is directed to an ink cartridge for use in printing an ink on a print medium with an electronic printer. The ink cartridge includes an ink disposed therein having a viscosity of between approximately 1.5 and 10 centipoise. An ink cartridge has an unfelted foam therein. The foam carries the ink and has a plurality of pores disposed substantially in communication with each other. The pores have an effective porosity of between approximately 60 and 90 pores per inch. The ink cartridge further has a printhead assembly disposed in fluid communication with the foam. The foam has an effective porosity, dependent on the viscosity of the ink, wherein ink is allowed to flow from the foam to the printhead assembly during periods of operation, and is substantially prevented from flowing from the printhead assembly during periods of inoperation.