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. 11, 2011
Filed:
Jul. 10, 2007
Woo-sik Kim, Suwon-si, KR;
Kye-si Kwon, Seoul, KR;
Seong-jin Kim, Seongnam-si, KR;
Seung-joo Shin, Seoul, KR;
Byung-hun Kim, Suwon-si, KR;
Sang-il Kim, Suwon-si, KR;
Woo-sik Kim, Suwon-si, KR;
Kye-si Kwon, Seoul, KR;
Seong-jin Kim, Seongnam-si, KR;
Seung-joo Shin, Seoul, KR;
Byung-Hun Kim, Suwon-si, KR;
Sang-il Kim, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd, Suwon-si, KR;
Abstract
A method and apparatus to check an operation of a piezoelectric inkjet head includes a first current detection unit to detect a first current output from a piezoelectric element of the piezoelectric inkjet head when a predetermined voltage is applied, a second current detection unit to detect a second current from a capacitor having a capacitance with the same magnitude as a capacitor component of the piezoelectric element when the voltage is applied to the capacitor, and a third current detection unit to detect a third current corresponding to a difference between the first current and the second current, as the amount of deformation of the piezoelectric element according to the application of the voltage.