Patent ID: 8035854

Claim:
A print data generating apparatus to generate print data which is used for printing in a printing apparatus based on image data by using a white colorant and at least one non-white colorant, comprising: an image data inputting system, whereby white image data indicating white density levels of an image to be printed is inputted; a colorant data generating system, which generates white colorant data wherein color information of each of a plurality of pixels configuring the white image data is converted into the white colorant level; a print data generating system, which generates white print data to be used for printing with the white colorant in the printing apparatus based on the white colorant data; and a white density level conversion table storing system, wherein a white density level conversion table for converting the white density levels of the plurality of pixels into one-dimensional white colorant levels respectively is stored; wherein: the colorant data generating system generates the white colorant data according to the white image data and the white density level conversion table, the white image data represents the image to be printed in an RGB format, each of the plurality of pixels in the white image data includes an R value, a G value, and a B value which in unison represent the color information of the pixel, and the colorant data generating system obtains the white density level based on a brightness determined by the R, G, and B values of the each of the plurality of pixels in the white image data.