Image processing apparatus, image processing method, and non-transitory computer readable medium

A non-transitory computer readable medium storing a program causing a computer to execute a process comprising:

• extracting custom color identification data that identifies each of one or more custom colors different from a plurality of predetermined basic colors from drawing data that is described in a page description language and that instructs drawing of a plurality of pages for every page;
• generating, each time the extraction of the custom color identification data for one page in the plurality of pages is completed, separation data that indicates an object to be drawn for each of the basic colors and the custom color identified by the custom color identification data extracted for the one page in accordance with the drawing data for the one page without waiting for the completion of the extraction of the custom color identification data for the pages other than the one page;
• generating raster data concerning each of the basic colors and the custom color in accordance with the separation data concerning each of the basic colors and the custom color that is generated;
• acquiring mixing ratio data indicating a ratio of mixture when the custom color identified by the custom color identification data that is extracted is represented by the mixture with the basic colors;
• and
• combining the raster data generated for the custom color with the respective pieces of raster data generated for the basic colors in accordance with the mixing ratio data that is acquired.

An image processing method comprising:

• extracting custom color identification data that identifies each of one or more custom colors different from a plurality of predetermined basic colors from drawing data that is described in a page description language and that instructs drawing of a plurality of pages for every page;
• generating, each time the extraction of the custom color identification data for one page in the plurality of pages is completed, separation data that indicates an object to be drawn for each of the basic colors and the custom color identified by the custom color identification data extracted for the one page in accordance with the drawing data for the one page without waiting for the completion of the extraction of the custom color identification data for the pages other than the one page;
• generating raster data concerning each of the basic colors and the custom color in accordance with the separation data concerning each of the basic colors and the custom color that is generated;
• acquiring mixing ratio data indicating a ratio of mixture when the custom color identified by the custom color identification data that is extracted is represented by the mixture with the basic colors;
• and
• combining the raster data generated for the custom color with the respective pieces of raster data generated for the basic colors in accordance with the mixing ratio data that is acquired.