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:
Sep. 29, 2009
Filed:
Dec. 28, 2005
Yehoshua Sheinman, RaAnana, IL;
Yehoshua Sheinman, RaAnana, IL;
Jemtex Ink Jet Printing Ltd., Lod, IL;
Abstract
Inkjet printer apparatus includes a pressure-regulated tank having an inlet connected to an ink reservoir, and an outlet connected to a printhead including nozzles for discharging continuous streams of ink drops towards a substrate for printing thereon and gutters for intercepting the ink drops not to be printed. The apparatus further includes a bypass line between the tank outlet and the ink reservoir, a bypass control valve for controlling the flow rate via the bypass line enabling the flow rate to be preset during draining of the tank, and a pump controllable to enable pre-calibrating the pump during filling of the tank. Also described is a method of controlling an inkjet printer apparatus by determining a nominal flow rate of the pump during a non-printing operation while filling the tank to a predetermined level, and controlling the pump during a printing operation to produce a flow rate slightly below the nominal flow rate when the level of the ink in the tank is at or above the predetermined level, and a flow rate slightly above the nominal flow rate when the level of the ink in the tank is below the predetermined level.