Nozzle arrangement that incorporates a reversible actuating mechanism

A nozzle arrangement which is the product of an integrated circuit fabrication technique, the nozzle arrangement comprising

• a substrate;
• a working member that is mounted on the substrate and that is movable reciprocally along a path of travel in order to perform work, the working member being configured to be so movable under the influence of a magnetic field of suitable strength;
• and
• at least two electromagnetic actuators that are arranged with respect to the working member to act on the working member, the actuators being capable of generating a magnetic field and of reversing the polarity of that field, the actuators being connectable to a suitable control system to permit the actuators to act synchronously so that the working member is under the influence of said at least two actuators while being reciprocally moved along the path of travel by magnetic fields generated by said at least two actuators.

An ink jet printhead, which is the product of an integrated circuit fabrication technique, the ink jet printhead comprising

• a substrate;
• and
• a plurality of nozzle arrangements that are arranged on the substrate, each nozzle arrangement comprising
• nozzle chamber walls that define a nozzle chamber;
• and
• an actuating mechanism that is mounted on the substrate and that comprises
• a working member that is movable reciprocally along a path of travel in order to eject ink from the nozzle chamber and at least two actuators that are arranged with respect to the working member to act on the working member, the actuators being configured so that the working member is under the influence of at least one of the actuators at substantially all points along the path of travel.