Drop detection

A system for drop detection of fluid drops ejected by a printing device includes a drop detector comprising a radiation source and radiation sensor for illuminating a region in which drops are ejected by a print bar and detecting radiation from the radiation source that is reflected by backscatterin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LOWE DAVID MILLER, BURTON GREGORY N, MACKENZIE MARK H, GARAY ERNESTO, BENJAMIN TRUDY
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CORRECTION OF TYPOGRAPHICAL ERRORS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PERFORMING OPERATIONS PHYSICS PRINTING RADIO DIRECTION-FINDING RADIO NAVIGATION SELECTIVE PRINTING MECHANISMS STAMPS TESTING TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A system for drop detection of fluid drops ejected by a printing device includes a drop detector comprising a radiation source and radiation sensor for illuminating a region in which drops are ejected by a print bar and detecting radiation from the radiation source that is reflected by backscattering from the drops to the radiation sensor; and a controller for controlling the drop detector and the print bar, wherein the controller uses a signal output by the drop detector to determine whether nozzles of the print bar are operating properly.