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:
Jan. 13, 2004
Filed:
Aug. 09, 2002
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A bubble-jet type inkjet printhead is disclosed, wherein a manifold for supplying ink, an ink chamber having a substantially hemispherical shape and filled with ink to be ejected, and an ink channel for supplying ink from the manifold to the ink chamber, are incorporated in a substrate. A nozzle plate having a nozzle, through which ink is ejected at the center of the ink chamber, is formed on the substrate. A heater is provided on the nozzle plate and surrounding the nozzle, and electrodes are provided on the nozzle plate and electrically connected to the heater to supply pulse current to the heater. An anti-wetting coating including a perfluorinated alkene compound on at least a surface around the nozzle is formed on an exposed surface of the printhead. Preferably, the anti-wetting coating is deposited by RF glow discharge and can be removed by O plasma.