PRINTING DEVICE AND METHOD FOR INSPECTING LIQUID DROPLET EJECTION NOZZLE THEREOF

PROBLEM TO BE SOLVED: To perform ejection inspection with less erroneous determination by improving an accuracy of the ejection inspection in a printing device.SOLUTION: The printing device includes: a nozzle for ejecting a liquid droplet; a voltage detection part to detect a voltage signal which va...

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Bibliographic Details
Main Author NAKAZAWA YOSHIO
Format Patent
LanguageEnglish
Published 03.02.2014
Subjects
CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:PROBLEM TO BE SOLVED: To perform ejection inspection with less erroneous determination by improving an accuracy of the ejection inspection in a printing device.SOLUTION: The printing device includes: a nozzle for ejecting a liquid droplet; a voltage detection part to detect a voltage signal which varies according to ejection of a liquid droplet; a nozzle state determination part to determine a state of the nozzle based on the voltage signal. The nozzle state determination part classifies three or more signals extracted from among second to Nth signals of detected N (N>3) signals into voltage regions which are divided into three or more regions, and determines that, when arbitrary two classified voltage signals belong to two different voltage regions respectively, if there is a region to which any signals do not belong between the two voltage regions, one of the arbitrary two signals is a noise.
Bibliography:Application Number: JP20120159733