Patent ID: 7548342

Claim:
An image forming apparatus comprising: a scanner which reads documents and produces image data in a first color space to which a predetermined property is added, the image data being output to an external apparatus; a first color converter which converts the image data in the first color space into image data in a second color space; a second color converter which converts image data in the first color space input from the external apparatus into image data in the second color space; a printer unit which prints out the converted image data in the second color space; and a controller which receives image data in the first color space from the external apparatus, wherein said controller provides the received image data to the second color converter to convert the received image data into image data in the second color space when the received image data does not have the predetermined property and transmits the converted image data to the printer unit, and wherein said controller transmits the received image data to the first color converter to convert the received image data into the image data in the second color space without converting by the second color converter when the received image data has the predetermined property.