250 lpi = 98,43 lpcm (=rounded 100 lpcm)
-> 10 lines per mm -> 1 line per 0,1mm
-> width of 1 line = rastercell is 0,1mm
->1 rastercell has 16x16 squares, because
8Bit (28=2x2x2x2x2x2x2x2)=16x16=256 different tonevalues,
the width of 1 square is (0,1mm rastercell/16=) 0,0063 mm
CMYK range...