Method of manufacturing thermal transfer print sheet, image forming apparatus, and method for same

摘要

The amount of achromatic toner used is reduced without decreasing adhesive force. A printer apparatus derives the densities of chromatic toner corresponding to the tone values of image data in the cyan, magenta and yellow format, and derives a total density by adding up the respective densities of the chromatic toner of cyan, magenta, and yellow. Then, the apparatus compares a threshold density such as 100% or 60% with the total density of the chromatic toner of cyan, magenta, and yellow. When the total density is higher than the threshold density, the apparatus sets the density of achromatic toner to 0. When the total density of the chromatic toner of cyan, magenta, and yellow is not higher than the threshold density, the apparatus sets the density of the achromatic toner to a value acquired by subtracting the total density from the threshold density.

主权项

1. A method for manufacturing a thermal transfer print sheet, comprising:
a first derivation step of deriving a printing density at which chromatic toner corresponding to each color component is printed based on tone data of each color component; a second derivation step of deriving a total density by adding up the printing density derived in the first derivation step and printing densities of chromatic toner corresponding to other color components for respective coordinates; and a third derivation step of deriving a printing density of achromatic toner that is printed on the coordinates when the total density derived in the second derivation step is less than a predetermined threshold density, wherein the third derivation step derives the printing density of the achromatic toner such that a value acquired by adding the printing density of the achromatic toner to the total density becomes equal to the threshold density.