Liquid jet recording device

Claim 1

A liquid jet recording device comprising: (a) a liquid reservoir; (b) means for defining a liquid flow path, said means having a feed portion and a discharge portion each formed along a separate center line, said portions being integrally and angularly interconnected such that the center lines intersect at an angle (θ) within a range of 45≦θ≦135, said feed portion being connected to said liquid reservoir and said discharge portion having a discharge orifice on said discharge portion center line for discharging liquid in a predetermined direction different from the direction of liquid flow through said feed portion, wherein a heat acting zone is defined in said liquid flow path at the angular connection of said portions; (c) a heat generating member provided in said feed portion and adjacent to said discharge portion for heating the liquid in said heat acting zone thereby changing its state and causing liquid to discharge from said discharge orifice in the predetermined direction, said heat generating member having a substantially planar heat generating surface defining a plane wherein the intersection of a normal to the plane and the center line of said discharge portion form an included angle Ψ which is 5° or less; and (d) a drive signal feeding means for generating drive signals to drive said heat generating member.