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:
Mar. 22, 2011
Filed:
Jul. 10, 2007
Tae-kyung Lee, Suwon-si, KR;
Sang-kwon Wee, Hwaseong-si, KR;
Jae-woo Chung, Yongin-si, KR;
Tae-woon Cha, Seoul, KR;
Jae-chang Lee, Hwaseong-si, KR;
Tae-kyung Lee, Suwon-si, KR;
Sang-kwon Wee, Hwaseong-si, KR;
Jae-woo Chung, Yongin-si, KR;
Tae-woon Cha, Seoul, KR;
Jae-chang Lee, Hwaseong-si, KR;
Samsung Electronics Co., Ltd, Suwon-si, KR;
Abstract
A piezoelectric type inkjet printhead includes an upper substrate including a pressure chamber to be filled with ink that is to be ejected, a reservoir to store ink that flowed in from an ink container, a restrictor connect the reservoir to one end of the pressure chamber, an intermediate substrate comprising a damper formed on a portion of the intermediate substrate, which corresponds to other end of the pressure chamber, a lower substrate comprising a nozzle to eject ink and formed in a portion of the lower substrate, which corresponds to the damper, a hydrophobic layer formed on a bottom of the lower substrate, and a piezoelectric actuator formed on the upper substrate to supply driving power to eject ink to the pressure chamber, wherein the nozzle is formed in the lower substrate at a predetermined depth from a bottom surface of the lower substrate.