Patent ID: 8336991

Claim:
An ink jet printer, comprising: a plural number of line heads, each provided in a row with a multitude of ink jet nozzles, and wherein said line heads are disposed in a printing direction, said line heads, other than least one of said line heads, are each displaceable by a distance that is equal to a part per the plural number of a nozzle pitch in a said line head in a direction of the nozzle row; a line head displaceable in the nozzle row direction, the line head being provided at one end thereof, in the nozzle row direction with a V shaped flange having a V shaped grove faced outwards in the nozzle row direction; a positioning pin fastened to a positioning block and engaged in the V shaped groove of the V shaped flange; and an eccentric shaft of an eccentric pin rotatably supported on a line block frame, said eccentric shaft receiving and supporting said positioning block, whereby an eccentric rotation of the eccentric shaft by a rotation of the eccentric pin moves said positioning block in the nozzle row direction so as to move said positioning pin in the nozzle row direction, thereby displacing via the V shaped flange the line head in the nozzle row direction.