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. 10, 2014
Filed:
Apr. 16, 2012
Byung Hun Kim, Gyeonggi-do, KR;
Hyun Seok Lee, Seoul, KR;
Byung Hun Kim, Gyeonggi-do, KR;
Hyun Seok Lee, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Gyunggi-Do, KR;
Abstract
A device and a method for managing a piezo inkjet head. The device includes: a piezo actuator connected to an inkjet head to generate pressure; a driver that controls driving of the piezo actuator; a sensing resistor connected between the driver and the piezo actuator, a signal amplifier connected across the sensing resistor to amplify the signal applied to the sensing resistor; a signal processor that removes noise of the signal output from the signal amplifier; a controller that determines a signal passing through the signal processor as a reference signal in a state in which bubbles are not introduced into the inkjet head; and a storage unit that stores the signal determined as the reference signal in the controller. The controller calculates a difference between the signal passing through the signal processor and the reference signal to generate a detection signal and determine a state of the inkjet head.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile