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US 12,737,579 B2Granted
Color management apparatus, color management method, and program
AssigneeFUJIFILM Corporation
InventorsToshiyuki Makuta, Misato Sasada, Kiyomi Tamagawa, Takuma Kawamoto
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Abstract
A color management apparatus includes at least one processor. The processor performs conversion between a first signal value and a first chromaticity value through a color profile. The color profile is created using a second chromaticity value of a color chart formed of at least one ink composition containing a liquid crystal compound and a chiral compound, and a second signal value. Each of the second chromaticity value and the second signal value is associated with amounts of the liquid crystal compound and the chiral compound.
Claims16
A color management apparatus comprising at least one processor,
- wherein the processor is configured to:
- perform conversion between a first signal value and a first chromaticity value through a color profile,
- the color profile is created using a second chromaticity value of a color chart formed of at least one ink composition containing a liquid crystal compound and a chiral compound, and a second signal value, and
- each of the second chromaticity value and the second signal value is associated with amounts of the liquid crystal compound and the chiral compound,
- wherein the second chromaticity value includes chromaticity values of color charts formed of at least two ink compositions forming the color charts having maximum reflection wavelengths different from each other,
- wherein the color chart has a black background, and the second chromaticity value includes a value measured under a condition in which an incidence angle of color measurement light is 15° and a light-receiving angle of reflected light is 0°,
- in the color chart formed of one specific ink composition of the at least two specific ink compositions, the maximum reflection wavelength is 430 nm or less, and
- in the color chart formed of the other specific ink composition of the at least two specific ink compositions, the maximum reflection wavelength is 640 nm or less.
5 more elements
A color management method comprising:
- performing conversion between a first signal value and a first chromaticity value through a color profile, wherein the color profile is created using a second chromaticity value indicating a chromaticity value of a color chart formed of at least one ink composition containing a liquid crystal compound and a chiral compound, and a second signal value, and
- each of the second chromaticity value and the second signal value is associated with amounts of the liquid crystal compound and the chiral compound, wherein the second chromaticity value includes chromaticity values of color charts formed of at least two ink compositions forming the color charts having maximum reflection wavelengths different from each other, wherein the color chart has a black background, and the second chromaticity value includes a value measured under a condition in which an incidence angle of color measurement light is 15° and a light-receiving angle of reflected light is 0°, in the color chart formed of one specific ink composition of the at least two specific ink compositions, the maximum reflection wavelength is 430 nm or less, and in the color chart formed of the other specific ink composition of the at least two specific ink compositions, the maximum reflection wavelength is 640 nm or less.
A color management method comprising:
- performing conversion between a first signal value and a first chromaticity value through a color profile, wherein the color profile is created using a second chromaticity value of a color chart formed of at least one ink composition containing a liquid crystal compound and a chiral compound, and a second signal value, and
- each of the second chromaticity value and the second signal value is associated with amounts of the liquid crystal compound and the chiral compound, wherein the second chromaticity value includes chromaticity values of color charts formed of at least two ink compositions forming the color charts having maximum reflection wavelengths different from each other, wherein the color chart has a black background, and the second chromaticity value includes a value measured under a condition in which an incidence angle of color measurement light is 15° and a light-receiving angle of reflected light is 0°, in the color chart formed of one specific ink composition of the at least two specific ink compositions, the maximum reflection wavelength is 430 nm or less, and in the color chart formed of the other specific ink composition of the at least two specific ink compositions, the maximum reflection wavelength is 640 nm or less.
Dependencies are inferred from the claim text.