Patent ID: 7794066
Filing Date: 2010-09-14
Classification: B26D,B41J,G01D

Abstract:
1. A printhead structure comprising: a casing mounted on a moulding to define a fluid reservoir therebetween, the moulding comprising a recess and a first passage in fluid communication between the fluid reservoir and the recess; an elongate silicon wafer received in the recess of the moulding and at least defining at least a part of an elongate channel and a second passage, the elongate length of the channel extending the elongate length of the silicon wafer, the channel being spaced from the first passage and the second passage having an inlet side at the first passage and an outlet side at the channel arranged to distribute all ink at the inlet side to the outlet side between the first passage and channel; a plurality of microelectromechanical ink ejection devices in fluid communication with the channel along the elongate length of the channel; and a metal cap portion which encloses the casing and moulding.