PRINTING APPARATUS

An apparatus for maintaining an inkjet printer printhead (1) in a working state, the printer defining an array of orifices (3) from which in use jets of ink are projected, the apparatus comprising means (20,21,22,23,24) for applying a pressure pulse to ink within the printhead sufficient to discharg...

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Bibliographische Detailangaben
Hauptverfasser:	BYRNE, DAVID JOHN, BROWN, STEVE, MCNESTRY, MARTIN, BUCKBY, STEVEN JOHN
Format:	Patent
Sprache:	eng ; fre ; ger
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:	An apparatus for maintaining an inkjet printer printhead (1) in a working state, the printer defining an array of orifices (3) from which in use jets of ink are projected, the apparatus comprising means (20,21,22,23,24) for applying a pressure pulse to ink within the printhead sufficient to discharge ink from each orifice when not in use to project ink, the pressure pulse having a relatively rapidly rising leading edge and a relative slowly falling trailing edge.