Microelectromechanical pagewidth printheads include a very
large number of ink ejection nozzles fabricated upon a silicon wafer. Ink stored
in the printhead subsequent to a printing operation is vulnerable to becoming undesirably
viscous thereby causing inconsistent printing. In order to address this problem
the present invention provides a printhead recapping mechanism. The mechanism includes
a base portion, that includes a solenoid coil and a movable capping portion which
incorporates magnetically attractive material responsive to the coil. A spring
biases the capping portion to a quiescent capping position when the printhead is
not in use. During printing operations a current is applied to the solenoid coil
to overcome the biasing spring and draw the capping portion from the capping position.