* カラープロファイル [#z97f8833] - https://www.ghostscript.com/doc/current/Ps2pdf.htm#Color_Conversion_and_Management - Ghostscript 9.21 Color Management -- https://www.artifex.com/wp-content/uploads/2017/01/Ghostscript_921_Color_Management_WhitePaper.pdf - A New Color Architecture for Ghostscript -- https://wiki.linuxfoundation.org/images/7/71/A_New_Color_Architecture_for_Ghostscript.pdf - https://www.ghostscript.com/doc/current/Ps2pdf.htm#Color_Conversion_and_Management - Embed ICC color profile in PDF -- https://stackoverflow.com/questions/31591554/embed-icc-color-profile-in-pdf gs -o cmyk-doc.pdf \ -sDEVICE=pdfwrite \ -dOverrideICC=true \ -sDefaultCMYKProfile=/path/to/mycmykprofile.icc \ -sOutputICCProfile=/path/to/mydeviceprofile.icc \ -dRenderIntent=3 \ -dDeviceGrayToK=true \ input-doc.pdf |