FIELD: physics.
SUBSTANCE: invention relates to the computer equipment. Supply unit for a printing device for feeding consumable material for printing into a printing device includes correcting data corresponding to nodes of the table of reference colours in the printing device, wherein the printing device allows for printing a plurality of types of media; wherein the correction data include a plurality of difference values for converting the reference colour table nodes into a user colour table for use with the selected media type from the plurality of types of media, wherein each of the difference values represents the difference of the value of the node of the target table of user colours and the value of the node of the table of reference colours; wherein said colour tables provide conversion between different colour spaces.
EFFECT: technical result consists in reduction of use of toner for printing a page.
18 cl, 9 dwg
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