Patent ID: 6527367
Filing Date: 2003-03-04
Classification: B41J

Abstract:
An ink jet recording head comprising:a base plate; a plurality of pairs of heat generating resistive elements arranged correspondingly on one base plate, for use in discharging ink by generating thermal energy for discharging ink as ink droplets; a plurality of ink discharge ports each arranged in a position facing a respective one of said heat generating resistive elements; a plurality of ink flow paths each communicating with a respective one of said ink discharge ports; elongated ink supply ports arranged on said base plate along the lines of said heat generating elements for use in discharging ink, and each communicating with a respective one of said plurality of ink flow paths; and a plurality of electrode portions arranged on said base plate along a plurality of the said supply ports so as to electrically connect said base plate and an exterior of said base plate, wherein are arranged on said base plate at least one temperature detector, arranged to detect the temperature of said base plate, and at least one means for heating said base plate, and wherein said means for heating said base plate is arranged at an area of said base plate on a side of said plurality of electrode portions from a longitudinal end of said plurality of ink supply ports.