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:
Dec. 31, 2013
Filed:
Sep. 02, 2010
Susumu Taga, Shiojiri, JP;
Susumu Taga, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An inkjet printer has a backflow prevention valve disposed to bottom of subtanks to of the diaphragm pump unit mounted on a carriage, and causes ink passing through the backflow prevention valve to flow to the inkjet head side. A support orifice that supports an umbrella-shaped valve plug, a port formed at a position circumferentially eccentric to the center of the support orifice, and a fluid conduction channel extending from an edge of the port circumferentially around the support orifice are disposed to the valve plug seating surface of the backflow prevention valve. A discharge orifice that discharges ink to the inkjet head side is disposed in the outside wall of the valve plug seating surface, and the discharge orifice and port are formed on the same side of the center of the support orifice.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile