VARIABLE DROP VOLUME CONTINUOUS LIQUID JET PRINTING

A liquid jet includes a fundamental period of jet break off. A print period is defined as N times the fundamental period of jet break off where N is an integer greater than 1. Input image data is provided having M levels per input image pixel including a non print level where M is an integer and 2&l...

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Bibliographische Detailangaben
Hauptverfasser:	PANCHAWAGH HRISHIKESH V, MARCUS MICHAEL ALAN, ADIGA SHASHISHEKAR P
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:	A liquid jet includes a fundamental period of jet break off. A print period is defined as N times the fundamental period of jet break off where N is an integer greater than 1. Input image data is provided having M levels per input image pixel including a non print level where M is an integer and 2< M = N+1. A charging device waveform independent of the input image data repeats during print periods and includes print and non print drop voltage states. A drop formation device waveform having a period equal to the print period is selected in response to the input image data to form from the jet print drops having a volume corresponding to an input image pixel level. The devices are synchronized to produce a print drop charge to mass ratio and a non print drop charge to mass ratio on drops breaking off from the jet.