Error detection apparatus of inkjet printer head and error detection method thereof
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsByung Hun Kim, Na Rae Park, Hyun Ho Shin
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Abstract
Provided is an error detection apparatus of an inkjet printer head including: an amplification unit connected between a piezoelectric element, which applies pressure to an ink chamber, and a ground to amplify a voltage generated from the piezoelectric element; and a detection unit for detecting whether ink is normally ejected using the voltage amplified by the amplification unit. It is possible to detect whether the inkjet printer head abnormally ejects ink by sensing vibration after ejection of ink using the piezoelectric element.
Claims4
An error detection apparatus of an inkjet printer head, comprising:
- a piezoelectric element configured to apply pressure to an ink chamber;
- an amplification unit configured to amplify a voltage generated from the piezoelectric element, wherein:
- an inverting input terminal of the amplification unit is directly connected to the piezoelectric element,
- a non-inverting input terminal of the amplification unit is directly connected to a ground, and
- a resistor is connected between the piezoelectric element and the ground;
- and
- a detection unit configured to detect whether ink is normally ejected, by comparing the voltage amplified by the amplification unit with a pre-stored reference voltage.
Dependencies are inferred from the claim text.