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Method and apparatus for calculating natural frequency of an ink-jet head

A natural frequency, inkjet head technology, used in the measurement of resonance frequency, complex mathematical operations, vibration measurement in solids, etc., can solve problems such as long time and difficult to quantify meniscus

Inactive Publication Date: 2007-11-14
SAMSUNG ELECTRO MECHANICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] This pattern leads to the problem that it is difficult to quantitatively determine the frequency at the position where the meniscus vibrates the most from a photographic image acquired with a stroboscope
Also, determining the frequency takes a long time since the user must experiment with different frequencies

Method used

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  • Method and apparatus for calculating natural frequency of an ink-jet head
  • Method and apparatus for calculating natural frequency of an ink-jet head
  • Method and apparatus for calculating natural frequency of an ink-jet head

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Embodiment Construction

[0022] Embodiments of the method and apparatus for determining the natural frequency of an inkjet head according to the present invention will be described in more detail below with reference to the accompanying drawings. In the description with reference to the drawings, the same or similar elements are denoted by the same reference numerals regardless of the reference numerals, and redundant descriptions thereof are omitted.

[0023] First, an apparatus for calculating a natural frequency of an inkjet head according to an embodiment of the present invention is described below.

[0024] 3 is a block diagram of an apparatus for calculating a natural frequency of an inkjet head according to an embodiment of the present invention. Referring to FIG. 3, the inkjet head 10, the fluid channel 11, the piezoelectric actuator 12, the membrane 14, the pressure chamber 16, the reservoir 17, the nozzle 18, the restrictor 19, the power supply 20, the laser Doppler are shown Vibration mete...

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PUM

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Abstract

A method and apparatus for calculating the natural frequency of an ink-jet head are disclosed. With a method of determining a natural frequency of an ink-jet head operated by a piezoelectric actuator by joining a sensor to the piezoelectric actuator, which includes supplying electrical power to the piezoelectric actuator; receiving data on the vibration of the ink-jet head as input from the sensor and storing the data; transforming the data and outputting a vibration waveform of the ink-jet head; and analyzing the vibration waveform and to determine the natural frequency of the ink-jet head ink-jet head, the natural frequency of the ink-jet head of high reliability may be determined. In addition, the time required for detecting natural frequency may be reduced.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority from Korean Patent Application No. 10-2006-0041147 filed on May 8, 2006 with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a method and apparatus for calculating the natural frequency of an inkjet head. Background technique [0004] When the inkjet head having the piezoelectric actuator discharges ink (ink), the inkjet head can effectively suppress the bending by synchronizing the discharge time (which is a driving waveform) and the holding time after discharge with the natural frequency of the pressure chamber Vibration of the moon surface (menisci) and stable discharge of ink. To determine the natural frequency of the pressure chamber, a direct measurement of the meniscus was used. [0005] FIG. 1 is a schematic diagram illustrating an apparatus and method for deter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J29/393B41J2/045
CPCB41J2/04581B41J2/14233B41J2/04588G01H1/14G01H11/08G01H13/00G06F17/14
Inventor 沈原徹郑在祐朴敞圣朴晟浚
Owner SAMSUNG ELECTRO MECHANICS CO LTD