Patent ID: 6325493
Filing Date: 2001-12-04
Classification: B41J

Abstract:
A liquid discharge recording head comprising:a substrate member having thereon a discharge energy generating element for giving discharge energy to ink corresponding to a plurality of ink flow paths arranged in parallel therefor;a plurality of grooves corresponding to said plurality of ink flow paths;an orifice plate provided with discharge ports for discharging ink each arranged to be communicated with one end of each of said grooves; andan ink liquid chamber communicated with each of said grooves on one end of each of said grooves for supplying ink to each of said grooves,a plurality of ink discharge paths being formed by bonding a ceiling plate member having said grooves, said orifice plate, and said ink liquid chamber integrally formed therefor with said substrate member, whereinsaid ceiling plate member comprises a first substrate having a portion including at least the circumference of said discharge ports of said grooves and said orifice plate, and a second substrate comprising the portions with the exception of said first substrate, and said first substrate and said second substrate are bonded to be integrally formed by means of a bicolor molding, andan insert member is arranged on the boundary surface between said second substrate and said first substrate.