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. 15, 2008
Filed:
Jul. 03, 2003
Mark Alexander Gröninger, Venlo, NL;
Pieter Gijsbertus Maria Kruijt, Eindhoven, NL;
Hans Reinten, Velden, NL;
Ronald Herman Schippers, Venlo, NL;
Johannes Mathieu Marie Simons, Venlo, NL;
Mark Alexander Gröninger, Venlo, NL;
Pieter Gijsbertus Maria Kruijt, Eindhoven, NL;
Hans Reinten, Velden, NL;
Ronald Herman Schippers, Venlo, NL;
Johannes Mathieu Marie Simons, Venlo, NL;
Océ-Technologies B.V., Venlo, NL;
Abstract
A method of controlling an inkjet printhead containing a substantially closed duct in which ink is situated, said duct having at least one exit opening for the ink, wherein an actuation pulse is applied to an electro-mechanical transducer so that the pressure in the duct changes in such a manner than an ink drop is ejected from the exit opening, wherein the method further comprises: measuring the electric impedance of the electromechanical transducer and adapting the actuation pulse on the basis of the measured impedance.