Electromagnetic Ink Jet Print Head
Original Publication Date: 1983-Aug-01
Included in the Prior Art Database: 2005-Feb-07
Ink drops are ejected on demand for printing from orifice 10 by reciprocation of hollow, inductively driven piston 11. Coil 12 receives an alternating drive signal when a drop is to be ejected. The field created by coil 12 reciprocates piston 11. The contour 13 of the interior of piston 11 pumps a drop of ink through orifice 10 from ink supply conduit 14.