Patent ID: 6976748
Filing Date: 2005-12-20
Classification: B41J

Abstract:
1. An ink jet head which is shifted in a main scan direction at a position opposed to a print medium shifted in a sub scan direction and in which, when said head is shifted in the main scan direction, an ink droplet is discharged from an ink nozzle toward the print medium, the ink nozzle belonging to either one of the following pluralities of nozzle arrays, said head comprising: a plurality of first nozzle arrays including nozzles for discharging a predetermined volume of liquid droplet and arranged along the main scan direction; and a plurality of second nozzle arrays including nozzles for discharging ink droplets each having an amount smaller than that of said first nozzle arrays and arranged in the main scan direction, wherein each nozzle array of said plurality of first nozzle arrays is arranged adjacent to a nozzle array of said plurality of second nozzle arrays, and each nozzle array of said plurality of second nozzle arrays is disposed between two nozzle arrays of said plurality of first nozzle arrays.