Disclosed is an image processing apparatus for processing digital color image data, wherein there are provided an image input circuit for introducing color image signal into a conversion circuit which generates digital color image data including color data and density data, a data processing circuit which includes a plurality of image processing circuits for processing the color data and the density data, and wherein latch circuits are further provided to each of the plurality of image processing circuits so that the color code data and the density data are respectively latched every after passing through the plurality of image circuit.