Patent ID: 6431682
Filing Date: 2002-08-13
Classification: B41J

Abstract:
A liquid discharge head equipped with a plurality of energy generating elements capable of generating energy for use in liquid discharge, including a head main body having a plurality of liquid flow paths arranged in parallel with one another corresponding to the energy generating elements, said liquid flow paths having their openings formed on one end face of the head main body, further including an orifice plate having a plurality of orifice holes communicating with the liquid flow paths, so that the liquid discharge head is capable of performing a recording operation on a recording medium by discharging liquid through the orifice holes, wherein:said head main body has a plurality of dummy liquid flow paths which will not be used in a recording operation but are provided on either side of the plurality of the liquid flow paths and are arranged in parallel with these liquid flow paths, while the orifice plate has, on its combining surface for combining with the head main body and only in positions corresponding to the dummy liquid flow paths, a first plurality of projected portions capable of engaging with open ends of the dummy liquid flow paths.