A method of manufacturing a head of an inkjet printer includes forming a heater
on a substrate and also forming an ink feeding passage through the substrate in
a vertical relation to a surface where the heater is formed, forming an ink chamber
communicating with the ink feeding passage of the substrate; attaching the substrate
to the nozzle plate, and forming a tapered nozzle in the nozzle plate, the tapered
nozzle being narrower in diameter in an inside of the nozzle plate than an outside
of the nozzle plate, by radiating a laser beam from inside toward the outside of
the nozzle plate, wherein the substrate is used as a mask. Since the nozzle is
formed by radiating the laser beam to the nozzle plate through the ink feeding
passage of the substrate after attaching the nozzle plate to the substrate, the
accuracy of the nozzle in form and position improves, and the nozzle of desirable
structure of the improved ink discharge efficiency can be obtained by radiating
the laser beam only once. Also, the manufacturing process becomes simpler, and
due to improved manufacturing process, the productivity increases.
