Two plate reverse firing electromagnetic ink jet printing mechanism

摘要

An ink jet print head uses a static plate and a movable plate to eject ink. A fixed electric copper coil is located within a nozzle chamber. The movable plate has an embedded electric coil located close to a fixed electric coil such that when a current passing through the coils is altered, the movable plate moves towards or away from the fixed plate. This movement causes ejection of ink from the nozzle chamber via an ink ejection port. A torsional spring is connected to the movable plate and the movable plate goes from a quiescent position to a spring loaded position upon activation of the coils. Upon deactivation of the coils the spring causes the movable coil to return to its quiescent position and to eject ink. The coils can have a stacked multi-level spiral of conductive material interconnected at a central axial point of the spiral.