[banana167c]

hi,

because icc is CMYK to LAB to CMYK.
your RIP unsupported pure color output.
normally, some RIP support pure color, for example PR-6500...

best regards,
bananababy,

[banana167c]

hi,

first.
what kind your RIP??

second.
check your RIP configure??

if it support. fine.
if not and you must need!!(print pure color)

i think you buy the new RIP to drive your printer.

best regards,
bananababy