Patent ID: 6601937
Filing Date: 2003-08-05
Classification: B41J

Abstract:
An image formation apparatus for forming an image on a recording medium, comprising:a large printer head portion having at least one large diameter nozzle for ejecting ink droplets onto the recording medium to form a dot of a predetermined size and a predetermined color on the recording medium; a small printer head portion having at least one small diameter nozzle for ejecting ink droplets onto the recording medium to form a dot, each of said at least one small diameter nozzle having a diameter which is smaller than a diameter of any of said at least one large diameter nozzle; and a controller for controlling said small printer head portion, in a first print mode, to eject an ink drop to print an ink dot having a size which is smaller than said dot of said predetermined size, said controller controlling said small printer head portion, in a second print mode, to eject a plurality of ink droplets to form an ink dot of a size substantially equal to said predetermined size and a color substantially equal to said predetermined color, wherein said controller is configured to control said small printer head portion in said second print mode when the image to be printed is a binary image.