NOZZLE STATE DETECTING DEVICE AND IMAGE FORMING DEVICE

PROBLEM TO BE SOLVED: To more appropriately detect a state of a nozzle.SOLUTION: A transmission gate TGB incorporated in a mask circuit 52 equipped with a transmission gate TGA performing connection/disconnection of an original signal generating circuit 50 and a piezoelectric element 48 (electrode 4...

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Bibliographische Detailangaben
1. Verfasser:	HAYASHI HISAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To more appropriately detect a state of a nozzle.SOLUTION: A transmission gate TGB incorporated in a mask circuit 52 equipped with a transmission gate TGA performing connection/disconnection of an original signal generating circuit 50 and a piezoelectric element 48 (electrode 48b), and a voltage waveform detecting circuit 54 connected to the electrode 48b of the piezoelectric element 48 via the transmission gate TGB are exclusively provided to each piezoelectric element 48. When a discharge abnormality of each nozzle 41 is detected, a driving signal for inspection is generated from the original signal generating circuit 50 to an extent in which an ink is not discharged from the nozzle, all the transmission gates TGA are turned from in an ON state to in an OFF state for a predetermined time period, all the transmission gates TGB are turned ON, and the discharge abnormality of a corresponding nozzle 41 is determined on the basis of oscillation cycle of the voltage waveform detected by the voltage waveform detecting circuit 54 for each of the piezoelectric element 48.