Patent ID: 6805428
Filing Date: 2004-10-19
Classification: B41J

Abstract:
A printing apparatus for ejecting ink drops to form dots on a print medium during main scan, comprising:a cartridge mounting section capable of mounting an ink tank set storing four basic-color inks of black, cyan, magenta, and yellow, and a supplementary cartridge storing a supplementary solution; a print head having four basic-color nozzle arrays for ejecting the four basic-color inks, respectively, and a supplementary nozzle array for ejecting the supplementary solution, the four basic-color nozzle arrays including a black ink nozzle array for ejecting the black ink; an ink feeder capable of feeding the four basic-color inks to the four basic-color nozzle arrays, while feeding the supplementary solution from the supplementary cartridge to the supplementary nozzle array, wherein the ink feeder feeds the supplementary solution independently from the basic-color nozzle arrays; the supplementary nozzle array is disposed in a staggered manner in relation to the black ink nozzle array in a sub-scan direction; and the supplementary solution is selectable from a plurality of types of solutions including the black ink.