Image processing method and device

An image processing device, comprising:

• a receiving unit that receives an input value combination that includes a plurality of input values for a plurality of primary colors and that is indicative of image information;
• and
• a converting unit that converts the received input value combination into an output value combination that includes a plurality of output values for a plurality of components for printing, the plurality of components for printing including black, the output value for black being smaller than or equal to a value of an allowable black maximum,
• an image obtained by printing an output value combination, whose value for black being greater than zero (0) and smaller than or equal to the value of the allowable black maximum value, exhibiting substantially the same gloss with another image obtained by printing an output value combination, whose output value for black being equal to zero (0).

A computer readable storage medium storing an image processing program readable by a computer, the image processing program comprising:

• a program of receiving an input value combination that includes a plurality of input values for a plurality of primary colors and that is indicative of image information;
• and
• a program of converting the received input value combination into an output value combination that includes a plurality of output values for a plurality of components for printing, the plurality of components for printing including black, the output value for black being smaller than or equal to a value of an allowable black maximum,
• an image obtained by printing an output value combination, whose value for black being greater than zero (0) and smaller than or equal to the value of the allowable black maximum value, exhibiting substantially the same gloss with another image obtained by printing an output value combination, whose output value for black being equal to zero (0).