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:
Mar. 16, 2004
Filed:
Jun. 06, 2002
David B. Richards, Fremont, CA (US);
Oće Display Graphics Systems, Inc., San Jose, CA (US);
Abstract
A printing system includes a printing device fluidly communicating with a main ink reservoir and a vacuum pump. The main ink reservoir refills one or more reservoirs mounted within the printing device when the ink contained therein falls below a defined tolerance level. The vacuum pump varies a level of a vacuum or partial vacuum within the reservoir to maintain a pressure level at one or more nozzles of one or more print heads mounted in the printing device. Variations in the level of the vacuum or partial vacuum can be based upon the desired pressure at the nozzles, the particular volume or level of ink stored within the reservoir, and the type of ink stored within the reservoir. Through creating the vacuum or partial vacuum, the inks stored within the reservoir are degassed before being delivered to the print head.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile