A printhead (1) for an ink jet printer includes a chamber (5) for containing marking fluid fed to the head in use. A plurality of orifices (8) open from the chamber (5), a marking fluid being emitted in use through the orifices (8). A corresponding plurality of actuators are provided. Each actuator comprises an arm (12) having at one end means for selectively opening and closing a respective orifice (8); a magnetic circuit (12, 13, 14, 15) of which the arm (12) forms a side; and one or more coils (14) for selectively inducing a magnetic flux in the circuit in order to move the arm (12) between a position in which it closes the respective orifice (8) and a position in which it opens the orifice (8).
申请公布号
WO9418010(A1)
申请公布日期
1994.08.18
申请号
WO1994GB00155
申请日期
1994.01.27
申请人
DOMINO PRINTING SCIENCES PLC;SHUMANN, MATTHEW, ALEXANDER;MILLER, ANNE, TREGONING;TEAPE, JOHN, WILLIAM
发明人
SHUMANN, MATTHEW, ALEXANDER;MILLER, ANNE, TREGONING;TEAPE, JOHN, WILLIAM