Hi neeld help for CMYK balancing

Hi anyone,
I am in need for a special need. I received a RVB image that must be used as a background for a published leaflet.
So i coverted it into CMYK mode and the conversion created rich blacks with
high CMYK values such as 90/90/90/100. I would like to reduce the ratios of
CM & Y channels in the darks areas so the rates of black zones are close to
something like 60/60/60/100 WITHOUT and that is the most important desaturing so much medium and lights areas of the pictures. I just want to reduce CM & Y in the dark areas.
I tried using the black channel as an aplha channel to reduce the amount of
CM & y (filling white 20% opacity in these channels) and sure i get what i want mathematically but the colour result is not so good. Using curves is not a good issue as well.
What could you advice to me in order to get a proper result. I did a capture, you can look at it here :
http://gateway.caldera.fr/experimentation/loic/debouchage.jp g

"Loic" wrote in message

Hi anyone,
I am in need for a special need. I received a RVB image that must be used as a background for a published leaflet.
So i coverted it into CMYK mode and the conversion created rich blacks with
high CMYK values such as 90/90/90/100. I would like to reduce the ratios of
CM & Y channels in the darks areas so the rates of black zones are close to
something like 60/60/60/100 WITHOUT and that is the most important desaturing so much medium and lights areas of the pictures. I just want to reduce CM & Y in the dark areas.
I tried using the black channel as an aplha channel to reduce the amount of
CM & y (filling white 20% opacity in these channels) and sure i get what i want mathematically but the colour result is not so good. Using curves is not a good issue as well.
What could you advice to me in order to get a proper result. I did a capture, you can look at it here :
http://gateway.caldera.fr/experimentation/loic/debouchage.jp g

Bonjour Loic,

Place info points on several areas of deep black. Then add a Selective Color layer as the topmost layer, then remove yellow, magenta, and cyan from black until you get to your 240 ink limit.

Bonjour Loic,

Place info points on several areas of deep black. Then add a Selective Color layer as the topmost layer, then remove yellow, magenta, and cyan from black until you get to your 240 ink limit.

Bonjour Loic,

Place info points on several areas of deep black. Then add a Selective Color layer as the topmost layer, then remove yellow, magenta, and cyan from black until you get to your 240 ink limit.

hey that seems to be the good way. Finally i was advice to let rvbs images and then let the printer adjust the picture as the profiles are included. Thanks a lot.