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.
申请公布号
EP2900475(A1)
申请公布日期
2015.08.05
申请号
EP20120885847
申请日期
2012.09.25
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人
GARAY, ERNESTO;LOWE, DAVID MILLER;BENJAMIN, TRUDY;MACKENZIE, MARK H.;BURTON, GREGORY N.