Patent ID: 8867095

Claim:
A printing system comprising: an image forming unit that forms an image on a recording medium by using a plurality of color materials corresponding to a first color space; an image reader that reads the image formed on the recording medium by the image forming unit in a second color space, which is different from the first color space; a first color converter that creates second image data by converting a color space of first image data used for forming the image using the image forming unit into a third color space, a reproduction color gamut of the third color space being wider than a reproduction color gamut of the first color space and a reproduction color gamut of the second color space; a second color converter that creates fourth image data by converting a color space of third image data, which is obtained as a result of reading an image by using the image reader, from the second color space to the third color space; an eighth image data creator that creates eighth image data by calculating a difference between the second image data and the fourth image data; a determining unit that detects, among pixels of an image represented by the eighth image data, a pixel having a pixel value which is greater than a predetermined reference value, and determines whether, among the pixels of the image represented by the second image data, the second image data and the eighth image data being obtained on the basis of the first image data, a pixel value of a pixel located at the same position as the pixel having a pixel value which is determined to be greater than the predetermined reference value is located inside or outside an input color gamut that is readable by the image reader; a correction unit that corrects, among the pixels of the image represented by the eighth image data, a pixel value of a pixel which is determined to be located outside the input color gamut by the determining unit to a predetermined set value; and an inspection unit that refers to each of pixels of an image represented by ninth image data obtained as a result of correcting the eighth image data by using the correction unit, and determines that there is a defect in the image formed on the recording medium by the image forming unit if a pixel value of a pixel in the ninth image data exceeds the predetermined set value.