Patent ID: 6880925
Filing Date: 2005-04-19
Classification: B41J

Abstract:
1. A liquid discharge recording head comprising: plural discharge ports for discharging liquid droplets; plural flow paths respectively communicating with said discharge ports; plural energy generating elements provided respectively corresponding to said flow paths and adapted to generate energy for discharging the liquid in said flow paths from said discharge ports; a first common liquid chamber positioned upstream of said plural flow paths for supplying said plural flow paths with the liquid; a liquid supply path for supplying said first common liquid chamber with the liquid; a second common liquid chamber provided at the upstream side of said liquid supply path and containing the liquid to be supplied to said liquid supply path; and a frame member constituting said second common liquid chamber, wherein a hole portion for liquid injection into said second common liquid chamber is provided in a part of said frame member, a stopper member comprising an elastic member is provided in said hole portion so as to close said hole portion, and said stopper member is provided, in a plane substantially perpendicular to the direction of depth of said hole portion, and completely contained within a periphery of said stopper member within the plane, with a previously-formed fissure hole aligned in the direction of depth and having fissures in not less than three directions from the crossing center of said fissures, and wherein, in a state in which a hollow needle-shaped member for liquid supply into said second common liquid chamber is inserted into said fissure hole and surrounded by the periphery of said stopper member, the liquid is supplied into said second common liquid chamber through said needle-shaped member.