Data containing at least a chroma component is obtained from an image data. Monochrome image data is generated from the chroma component image data. Which hue is to be output as it is specified, for example, by an operator. From the monochrome image data, the monochrome image data that corresponding to a portion of the colored image that has the specified hue is removed to obtain image eliminated data. The image eliminated data and the image data corresponding to a portion of the colored image that has the specified hue are combined to obtain an image processed data. The image processed data is converted into data that can be printed with a color printer.