INK JET HEAD AND INK JET PRINTER

PROBLEM TO BE SOLVED: To provide an ink jet head and an ink jet printer which can detect a leakage current generated in a head unit.SOLUTION: The ink jet head includes a head unit, a clock signal generation unit, a drive control unit and a current measurement unit. The head unit discharges ink from...

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Bibliographic Details
Main Author AKIMOTO MANABU
Format Patent
LanguageEnglish
Japanese
Published 12.10.2017
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 provide an ink jet head and an ink jet printer which can detect a leakage current generated in a head unit.SOLUTION: The ink jet head includes a head unit, a clock signal generation unit, a drive control unit and a current measurement unit. The head unit discharges ink from an ink chamber by applying drive voltage to the wall surface of the ink chamber. The clock signal generation unit generates a clock signal to be supplied to the head unit. The drive control unit stops supply of the clock signal to the head unit and applies constant drive voltage to the head unit. The current measurement unit measures the current flowing in the head unit while the drive control unit stops supply of the clock signal to the head unit.SELECTED DRAWING: Figure 1 【課題】ヘッド部に生じるリーク電流を検出できるインクジェットヘッド及びインクジェットプリンタを提供する。【解決手段】実施形態によれば、インクジェットヘッドは、ヘッド部と、クロック信号生成部と、駆動制御部と、電流測定部と、を備える。ヘッド部は、インク室の壁面に駆動電圧を印加して前記インク室からインクを吐出する。クロック信号生成部は、前記ヘッド部に供給するクロック信号を生成する。駆動制御部は、前記ヘッド部への前記クロック信号の供給を停止し、前記ヘッド部に一定の駆動電圧を印加させる。電流測定部は、前記駆動制御部が前記ヘッド部への前記クロック信号の供給を停止する間に、前記ヘッド部に流れる電流を測定する。【選択図】図１
Bibliography:Application Number: JP20160077471