Patent ID: 8437055

Claim:
An image processing apparatus comprising: a first storage unit that stores color conversion information for converting a name of a spot color other than process colors into a combination of the process colors; a second storage unit that stores additional print material information regarding an additional print material, the additional print material information being input by a user for the name of the spot color; a conversion unit that converts the name of the spot color, which is included in image data, into the combination of the process colors based on the color conversion information; a determination unit that determines, for the name of the spot color included in the image data, a total use amount of a sum of color materials of the process colors and gloss adjusting material of the additional print material, based on the additional print material information; and an adjustment unit that if the determination indicates the total use amount exceeds a certain threshold value, adjusts the total use amount to be less than the certain threshold value only by adjusting an amount of the color materials of the process colors without decreasing an amount of the gloss adjusting material of the additional print material.