lpr <ファイルパス> -o CNColorMode={Auto | color [-o CNColorHalftone={None | Resolution | Gradation | ColorTone}] | mono [-o CNHalftone={None | Resolution | Gradation | ColorTone}]} -o CNBlackSubstitute={None | True | False} -o CNHighBlackDensity={None | On | Off} |
$ lpr sample.txt -o CNColorMode=color -o CNBlackSubstitute=True |