Patent ID: 6340224
Filing Date: 2002-01-22
Classification: B41J

Abstract:
An ink-jet recording head having first and second head portions, and a controller, each of said head portions comprising:a plate having an ink cavity for accommodating an ink material; a nozzle extending from said ink cavity for ejecting therethrough said ink material accommodated in said ink cavity; and an actuator disposed adjacent to said ink cavity, said actuator causing said ink material to be ejected through said nozzle as an ink droplet; wherein a size of said ink cavity in said first head portion is different than a size of said ink cavity in said second head portion to thereby eject through said first head portion said ink droplet having a size which is different from a size of said ink droplet ejected through said nozzle in said second head portion, wherein a size of said nozzle in said first head portion is the same as a size of said nozzle in said second head portion; and wherein said controller is adapted to control a voltage applied to each of said actuators in each of said first and second head portions so that in at least one of said head portions the voltage applied to said actuator is controlled so as to change a size of said ink droplet ejected therefrom.