Red Printing Issue with Indesign CS2/OKI Printer

[morrowdesign]

In the shadows of SOME of the print copy of images, the red/maroon drops to gray--image is attached. On the screen it looks great--screen shot image is attached. All images are RGB and JPGS. I am working on a PowerMac using CS2 and printing to an OKI C830 printer. Any suggestions on how to make the shadows not go to gray? Thanks for the help!

 

[foreigner]

Even is far distant for the opening of this threat, I thoaght to wip the dust maybe for other who still have the same problem.
Same problem with OKI c 9600 & ES 3640 a3, i think is a matter of RIP (flaky emulated Postscript) combined with narrow color gammut ICC (i have seen it in while soft proofing in corel or Illu, or Phot in the Fill Tab color box were certain areas of dark Red, dark Green, dark Blue are substituted with gray, don't know why? Also i think it also a mater of agresive GCR color replacement instruction. you can prevent certain colors for not printing gray but you can not control photographic gradients RGB or CMYK workflow, or the middle areas of two point gradient Red-Black( siple or comp) Green-Black( siple or comp) Blue-Black( siple or comp)CMYK environment.

 

[Stephen Marsh]

In the shadows of SOME of the print copy of images, the red/maroon drops to gray--image is attached. On the screen it looks great--screen shot image is attached. All images are RGB and JPGS. I am working on a PowerMac using CS2 and printing to an OKI C830 printer. Any suggestions on how to make the shadows not go to gray? Thanks for the help!

Look into your printer profile and or driver and/or RIP settings.

Try different rendering intents in your colour settings and/or different CMM engines.

Try converting the problem images of this type to CMYK first (for example variants of Fogra39 / ISO Coated v2), then printing. I would try two different extremes of GCR, a light GCR and a heavy GCR CMYK profile to see if this has any effect.


Stephen Marsh

 

[foreigner]

Thank You Stephen, for the reply.
Yes, i have tried different profiles and also different rendering intends but the only one that seems to work was a Us profile for cut sheet press, but in these case the colors in general were a little off, because this was trying to low (not so much) the 200% coverage of Red, Greeen & blue areas to harmoniously match the dark midtone gray (problematic)area. All this operation was done throw Adobe Acrobat Proffesional who let you choose this kind of outputprofile with Perceptual Ren. Int.
How to solve the faded colors in general now with this new profile?!
I have hear about the new Profile FOgra 51. Do you have any suggestion about this one? Is it good for digital toner printers.
Thank You!

 

[Possumgal]

We have an Oki printer, not the same model, so I don't know if this applies. I was told that unless you have an external RIP like a Fiery, the Oki built-in RIP on our model does not convert RGB to CMYK. See if converting helps.

 

[foreigner]

I know well, the story of the External Rip but we are not in condition to have one (the owner dont want throw away extra money) and i as i see the things going on we will not have one in the future.
Any ather suggestion?

 

[foreigner]

The Oki build in RIP does convert for sure the images from RGB to CMYK but it is converting them to his factory profile.I am not talking about the Simulations Profiles (Swop Euro Japan ect.) wich gives a poor and faded color. The profiles i am talking are second to the resolution. I know this for sure, because i have them installed on my PC. Every time you choose a resolution the Oki assigned a profile. For example If you choose 600dpi he assigned 600-tens corresponding profile, and so on for the 1200 multi. Three profiles for the three options of resolution. These profiles second to resolution are also in RGB version but the Proof ones are the CMYK who are used with PS driver and not PCL. Thats the part i Hate the most, OKi has spent a lot of time to build six profiles and none of them is doing the job right.
Unfortunately we cannot permit to ourselves to get the appropriate tools to create a custom profile who should resolve the question.