Title:
Color conversion device and color conversion method
Document Type and Number:
Japanese Patent JP6338480
Kind Code:
B2
Abstract:
As image processing apparatus includes a color converter 20 as a color converting device. The color converter 20 has, as main functional components for carrying out color conversion of halftone of a spot color, a spot color information acquiring unit 21 for acquiring spot color information from manuscript data, a spot color Lab acquiring unit 22 for acquiring L*a*b* values in an L*a*b* color space when the dot percentage of the spot color is 100%, a first calculating unit 23 for calculating halftone L*a*b* values, using the L*a*b* values at 100% dot percentage of the spot color acquired by the spot color Lab acquiring unit 22 and a dot percentage of the spot color in a printing target portion of the spot color, and a second calculating unit 24 for converting, using an output ICC profile, the halftone L*a*b* values calculated by the first calculating unit 23 into CMYK values.
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Inventors:
Arisono Shigetoku
Ueda Kohei
Ueda Kohei
Application Number:
JP2014148625A
Publication Date:
June 06, 2018
Filing Date:
July 22, 2014
Export Citation:
Assignee:
Screen Holdings Co., Ltd.
International Classes:
H04N1/46; G06T1/00; H04N1/60
Domestic Patent References:
| JP2002046302A | ||||
| JP2003149796A | ||||
| JP2001157074A | ||||
| JP2005268930A | ||||
| JP2005278074A |
Attorney, Agent or Firm:
Takashi Otsubo
Sachiko Muraguchi
Sachiko Muraguchi