Patent ID: 8780410

Claim:
An image processing apparatus comprising: a storage unit; and a control unit that analyzes and rasterizes print data described in a page description language; generates raster data represented by a first color value in a first color space described in the print data, color space information indicating the first color space, and specific color information indicating that the first color value is a specific color value; stores the raster data in the storage unit in association with the color space information and the specific color information; determines whether the specific color information exists in association with the raster data stored in the storage unit; converts the first color value into a second color value in a second color space of an output device by performing calculation corresponding to the first color space if it is determined that the specific color information does not exist; replaces the specific color value with a predetermined color value in the second color space if it is determined that the specific color information exists; and generates image data to be outputted by the output device.