Image processing apparatus

An image processing apparatus which generates print data for driving a printing head having nozzle groups for color which are capable of discharging ink at a first resolution and nozzle groups for black which are capable of discharging ink at a second resolution which is higher than the first resolution comprising:

• a first processing device which inputs image data;
• and
• a second processing device which is communicably connected to the first processing device through a predetermined communication interface,
• wherein the first processing device acquires a color image having the second resolution, extracts a black character region image from the acquired color image, transmits the extracted black character region image to the second processing device through the predetermined communication interface, and generates print data for driving the nozzle groups for color from a not-black character region image which has not been extracted from the acquired color image as the black character region image accompanied with a resolution conversion to the first resolution, and
• the second processing device generates print data for driving the nozzle groups for black based on the black character region image transmitted from the first processing device.