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:
Jun. 27, 2000
Filed:
Oct. 23, 1997
Johan F Dijksman, Eindhoven, NL;
Adrianus C Van Kasteren, Eindhoven, NL;
Johannes van Zwol, Roermond, NL;
Martin Fleuster, Aachen, DE;
Johannes A De Wit, Eindhoven, NL;
Ramin Badie, Eindhoven, NL;
Marcel J Damen, Sittard, NL;
Andreas C Van Nes, Eindhoven, NL;
Joseph R Pankert, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A printhead which comprises a body with pressure chambers (13) and nozzles (14), a membrane (17) connected to the body so as to form one wall of the pressure chambers, and an actuator plate (25) comprising an actuator element (31) for each pressure chamber. A support plate (19) between the actuator plate and the membrane includes first portions (21) and second portions (23) with the first portions being movable relative to the second portions in the direction of the thickness of the support plate, a first portion being situated between each actuator element and the corresponding pressure chamber. The actuator plate has active regions (31) and inactive regions (33), the actuator elements being formed by active regions of the actuator plate. Adjacent actuator elements are separated from each other over substantially their whole length by slits (35) in the actuator plate. The actuator plate can be a ceramic multilayer actuator (CMA).