Patent ID: 6971170

Claim:
A method of manufacturing printhead, comprising steps of: (a) providing a base layer; (b) forming a pattern layer on said base layer by a semi-conductor manufacturing process, wherein said pattern layer includes: a flow pattern disposed bilaterally on two opposite ends of said base layer and having a space location reserved for a flow channel; and a base pattern disposed bilaterally on two opposite sides of said base layer and having plural apertures reserved for plural ink cavities, wherein said flow pattern and said base pattern surround a central location reserved for an ink channel, said base pattern comprises at least a heating layer and a passivation layer, and said flow pattern is made of said same material and at said same height as said base pattern; (c) forming a dry film of a channel barrier layer having said ink channel, said flow channel and said plural ink cavities on said pattern layer; and (d) adhering a nozzle plate on said dry film of said channel barrier layer by thermal compression, wherein said nozzle plate has plural ink opening disposed over said ink cavities.