Printing system, color matching method, and program

A color matching method for matching a color printed by a printing device, and the printing device including a plurality inkjet heads configured to eject inks of colors different from each other by an inkjet method;

• and a colorimeter configured to perform colorimetry of a color printed by the inkjet heads, and the color matching method comprising:
• performing a color matching process for matching a color printed by the inkjet heads in the printing device with a target color, wherein,
• in the color matching process,
• a target color acquiring process for acquiring the target color by causing the colorimeter in the printing device to perform colorimetry of the color of an object in which the target color is expressed,
• an initial value setting process for setting an initial value of a color setting value that is a value indicating an ejection amount of ejecting an ink of each color by each of the inkjet heads, and
• a target color corresponding value determination process that is a process for determining a target color corresponding value that is the color setting value corresponding to the target color, through which the inkjet heads are caused to print a plurality of patches that are respectively associated with the color setting values different from each other and a patch having a color close to the target color is selected from among the patches to determine the target color corresponding value are performed;
• in the target color corresponding value determination process,
• a first color selection process for selecting a patch having a color close to the target color from among the patches having the color setting values different from each other at a first interval that is preset, and
• a second color selection process for selecting a patch having a color close to the target color from among the patches having the color setting values different from each other at a second interval that is narrower than the first interval are performed;
• in the first color selection process,
• a first reference value setting process for setting an initial value of the color setting value set in the initial value setting process as a first reference value which is the color setting value of a reference in the first color selection process,
• a first patch printing process for causing the inkjet heads to print the patches having the color setting values different from each other from the first reference value at the first interval, and
• a first patch selection process for selecting a patch having a color closest to the target color from among the patches based on a colorimetric measurement result for the patches obtained by causing the colorimeter to perform colorimetry of the colors of the patches printed by the first patch printing process and the target color acquired in the target color acquiring process are performed;
• and
• in the second color selection process,
• a second reference value setting process for setting the color setting value corresponding to a patch selected as a patch having a color closest to the target color in the first color selection process as a second reference value that is the color setting value of a reference in the second color selection process,
• a second patch printing process for causing the inkjet heads to print the patches having the color setting values different from each other from the second reference value at the second interval, and
• a second patch selection process for selecting a patch having a color closest to the target color from among the patches based on a colorimetric measurement result for the patches obtained by causing the colorimeter to perform colorimetry of the colors of the patches printed by the second patch printing process and the target color acquired in the target color acquiring process are performed.

A non-transitory computer readable medium stored with a program for controlling an operation for matching a color printed by a printing device including a plurality inkjet heads configured to eject inks of colors different from each other by an inkjet method and a colorimeter configured to perform colorimetry of a color printed by the inkjet heads, which controls an operation for a color matching process for matching a color printed the inkjet heads in the printing device to a target color, wherein,

• in the color matching process,
• a target color acquiring process for acquiring the target color by causing the colorimeter in the printing device to perform colorimetry of the color of an object in which the target color is expressed,
• an initial value setting process for setting an initial value of a color setting value that is a value indicating an ejection amount of ejecting an ink of each color by each of the inkjet heads, and
• a target color corresponding value determination process that is a process for determining a target color corresponding value that is the color setting value corresponding to the target color, through which the inkjet heads are caused to print a plurality of patches that are respectively associated with the color setting values different from each other and a patch having a color close to the target color is selected from among the patches to determine the target color corresponding value are performed;
• in the target color corresponding value determination process,
• a first color selection process for selecting a patch having a color close to the target color from among the patches having the color setting values different from each other at a first interval that is preset, and
• a second color selection process for selecting a patch having a color close to the target color from among the patches having the color setting values different from each other at a second interval that is narrower than the first interval are performed;
• in the first color selection process,
• a first reference value setting process for setting an initial value of the color setting value set in the initial value setting process as a first reference value which is the color setting value of a reference in the first color selection process,
• a first patch printing process for causing the inkjet heads to print the patches having the color setting values different from each other from the first reference value at the first interval, and
• a first patch selection process for selecting a patch having a color closest to the target color from among the patches based on a colorimetric measurement result for the patches obtained by causing the colorimeter to perform colorimetry of the colors of the patches printed by the first patch printing process and the target color acquired in the target color acquiring process are performed;
• and
• in the second color selection process,
• a second reference value setting process for setting the color setting value corresponding to a patch selected as a patch having a color closest to the target color in the first color selection process as a second reference value that is the color setting value of a reference in the second color selection process,
• a second patch printing process for causing the inkjet heads to print the patches having the color setting values different from each other from the second reference value at the second interval, and
• a second patch selection process for selecting a patch having a color closest to the target color from among the patches based on a colorimetric measurement result for the patches obtained by causing the colorimeter to perform colorimetry of the colors of the patches printed by the second patch printing process and the target color acquired in the target color acquiring process are performed.