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:
Dec. 03, 2013
Filed:
Dec. 10, 2010
Applicants:
Byung Hun Kim, Gyunggi-do, KR;
Seung Joo Shin, Seoul, KR;
Inventors:
Byung Hun Kim, Gyunggi-do, KR;
Seung Joo Shin, Seoul, KR;
Assignee:
Samsung Electro-Mechanics Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 29/38 (2006.01); B41J 29/393 (2006.01); B41J 2/045 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a monitoring apparatus for an inkjet head including a resistance element connected between a driving circuit generating a driving signal and a piezoelectric element applying pressure to an ink chamber according to the driving signal, an amplifier unit amplifying a differential voltage between an output voltage from the driving circuit and a voltage generated in the piezoelectric element, and a detecting unit detecting whether ink is being normally ejected, based on the amplified differential voltage from the amplifier unit.