Patent ID: 7549722

Claim:
An image forming apparatus comprising: an array type inkjet head disposed in a stationary state to print an image onto a printing medium, and having a first nozzle unit of a length that corresponds to at least a width of the printing medium; a first guide part spaced apart from the array type inkjet head to face the array type inkjet head along a length direction of the array type inkjet head; a carrier movably coupled with the first guide to perform a reciprocating motion in a width direction of the printing medium; a shuttle type inkjet head mounted in the carrier to print a second image onto the printing medium, and having a second nozzle unit; a paper delivery unit to deliver the printing medium to at least one of the array type and shuttle type inkjet heads; a controller to control operations of the array type and shuttle type inkjet heads and the paper delivery unit to allow ink fired from at least one of the first nozzle unit and the second nozzle unit to be dispersed and impacted onto an appropriate position of the printing medium; and a wiping device to contact a surface of the first nozzle unit of the array type inkjet head and to wipe out residual ink from the nozzle unit of the array type inkjet head, the wiping device comprising: a wiper unit coupled with the carrier and having one end that contacts the surface of the first nozzle unit of the array type inkjet head to wipe out the residual ink thereon; and a second guide part to rotate the array type inkjet head to allow the surface of the first nozzle unit to contact the one end of the wiper unit.