CMYK to CMY Filter?

I posted this elsewhere, but perhaps this would be the more appropriate forum for this question:
Does anybody know where I might be able to find an Illustrator filter that would allow me to convert selected objects from CMYK or RGB to CMY only?
Or does anyone here who's familiar with the Illustrator SDK want a quick freelance job making such a filter for me?
(Converting RGB to CMYK makes everything muddy, so I have to go through and manually replace the black while converting my digitally illustrated webcomic from RGB to CMYK for a planned print edition. I would rather do a blanket conversion and then fix the handful of colors that didn't convert well enough than have to go through EVERY SINGLE SHAPE by hand.)

please send sample files to me at [email protected] I'll try to make it.

Similar Messages

Process printing without black? (CMY with NO K)

I've just been informed that the process used to print the food packaging tubes that I am working on DOESN'T use black!
Thus leaving me with the C,M and Y channels. Now, I could very easily remove the black channel of my images in the Channels palette in PShop - which of course will impact upon the tonal range of my images.
Is there some way that I can convert the images from either RGB or CMYK to CMY - whilst retaining/approximating the darker tones using only three channels?
I'd really appreciate some help here - I'm lost. I've had a bit of reading online and the only info that I can find relates to inket printers and such.

With a proper color managed workflow there is no need to convert source RGB to CMYK in Photoshop. Ideally the conversion occurs at output. Or, the printer converts the RGB for you (check with the printer).
Ideally you would have the printer's ICC profile so you can soft proof the printing condition, no matter who does the conversion.
But let's say you don't have the printer's ICC. At the very least, try to find out what you can about the inks used, the press dot gain, and the Total Ink Limit.
Edit: Color Settings. By CMYK, "Custom CMYK". Specify the appropriate ink colors, dot gain. Separation type, GCR. Black generation None. Enter the total ink limit (it will be between 200% and 300%). Note the name at the top of the dialog and hit enter ONCE.
By CMYK, scroll up to "Save CMYK". Save into your color sync profiles folder.
Then CANCEL. You do not want to change your global color settings. Creating the custom CMYK was the goal and you've done it.
Now with a source RGB image open, View: Proof Setup: Custom. Device to Simulate, select the CMY profile you just created.
For CMY output, Save As. Format, Photoshop PDF. By "Color" at bottom right tick "Use Proof Setup". You will notice that "As a Copy" automatically ticks on.
Now in the Save Adobe PDF dialog, select a PDF standard such as PDF/X-1a. By compression, select the appropriate settings. By Output, "Convert to Destination", and make sure the destination is your custom CMY profile.
Now you have CMY PDF output, and you still retain the native source RGB image.
You also have the option of importing the source RGB image into another app such as InDesign, and performing the conversion to CMY when you output from there.
I should emphasize, the custom CMYK should only be an option if you simply can't get a CMY profile from the printer. But either way, keep your source RGB image and soft proof print color and convert on output. Saves you a lot of time and headaches, and you can move to whatever CMY or CMYK that suits the print job.

Exporting to TIFF, why does it go wrong?

I'm trying to export a freehand file with blur effects and
drop shadows. Everytime I try to export the colors change and the
effects go a bit crazy, not resembling anything I created in the
original file. Can anyone help me?
Thank you

> I'm trying to export a freehand file with blur effects
and drop shadows.
> Everytime I try to export the colors change and the
effects go a bit crazy,
> not resembling anything I created in the original file.
Can anyone help me?
Are you exporting CMYK or RGB images?
FreeHand's Raster Effects are only suitable for RGB images
such as web
images. Dark colors will export to CMYK as CMY only -- no
Black channel
info. This is not good. (Yes, Illustrator handles this much
better.)
If you must export CMYK images, make sure your Color
Management Preferences
are set for CMYK work. Set File>Document
Settings>Raster Effect settings to
'Optimal CMYK'.
Do you have Photoshop? If you export CMYK data from FH as an
EPS file and
open that in Photoshop as a CMYK image, you will get much
better results.
Judy Arndt

I am trying to softproof an image using a CMYK .icc file. I sent an image from LR 5 to PS CC 2014, opened the Camera Raw FIlter, but the hyperlink to access workflow is not showing up in the CR dialogue box... Any ideas why this might be?

I am trying to softproof an image using a CMYK .icc file. I sent an image from LR 5 to PS CC 2014, opened the Camera Raw FIlter, but the hyperlink to access workflow is not showing up in the CR dialogue box... Any ideas why this might be?

I am trying to softproof an image using a CMYK .icc file. I sent an image from LR 5 to PS CC 2014, opened the Camera Raw FIlter, but the hyperlink to access workflow is not showing up in the CR dialogue box... Any ideas why this might be?

Texture filter in Rgb mode to cmyk - safe for print job?

I want to apply the texture filter to a photo for a print job but the texture filter only works in rgb. Can the rgb file be SAFELY converted to cmyk for print?

In what way do you think a conversion from RGB to CMYK after the application of the filter will not be safe? What do you expect to go wrong?
...or if you have tried it, what has gone wrong?

How should CMYK colors be built? Is it OK to use all three of CMY?

This is a general question I'm posing here because I think it is the forum that is frequented by the largest number of people with real world print project management experience.
The question is: in an ideal world, how should CMYK color be built? Lets assume I know the LAB values for several colors I want to reproduce accurately on an offset printing press. I can install the correct ICC Profile in my color management settings, input the LAB values, and let InDesign do the conversion to CMYK for me.
However, I have been told by print professionals that, if at all possible, don't define a color swatch using all three CMY inks. Instead, use a maximum of two of CMY plus a K percentage. In other words, the ideal for printing CMYK screen tint mixes is to use percentages that use high GCR formulas - i.e. replace CMY with K where possible. This, so the the theory goes, helps to increase color stability on press.
I guess in reality I have two questions: is that rule of thumb valid/useful? And if so...do I have any control over it in InDesign?

That was my personal opinion guys as a contributor to this forum thread - it should be taken as an opinion only of course :) Using either or is obviously perfectly OK, I'm just a fan of using MDT to build and capture source images over Configuration Manager
for a variety of reasons.
My main point was that a build and capture Task Sequence can be used regardless of the requirement for a thin or thick image and that you can pause and resume a build and capture process to suit your requirements (and in my opinion MDT would be perfect for
your situation). You should of course use Config Manager to deploy your Windows 8.1 custom image if you have that option.
I've used capture media in the past and wouldn't recommend it. There's no technical reason, just my opinion :)
Cheers
Damon

How to export a CMYK document to a black/white or greyscale pdf for print?

Hello, I have some knowledge in graphics design, but very little about color management.
Currently I need to convert an instruction manual I made to black and white output only. We'd prefer to keep the indesign (.indd) and it's source images in their respective colors, but when exporting the document to a pdf my printer can use, we'd like to make that document a black and white pdf, as it's a black/white manual anyway. A little color conversion isn't to bad, as long as it's reasonable. all images that might give trouble are in greyscale anyway.
So how do I export a full color indesign document to a black&white/greyscale pdf?
ps:
very newb question, but if you don't ask, you never learn:
When do you use the colours "registration", and when do you use "paper"?

I am also trying desperately to convert my CMYK colors into a grayscale so that when I print the document the printer only uses K (and C=0 M=0 Y=0)
And I saw this bit of info you wrote a few months ago. I am working working with photoshop CS4. I tried to follow it but I found the following difficulties. Hope you don't mind me writing over your text.
RGB image --> Grayscale
New doc --> CMYK image,same size, empty
Copy Grayscale and paste into the K-channel of the CMYK image. - (It only allows me to copy onto the CMYK layer but not onto the Black so I had to Drag layer onto channel delete the black layer and rename my new layer as black but then the document changes from CMYK to Multichannel and I have to re-change the mode again to CMYK but this already prints CMYK...)
Place image in InDesign doc.
Everything else (vector, text) by K-only.
(...then when I placet that CMYK file into InDesign, and PDF it, on the output preview still separates the grayscale image into CMYK and when I print, the printer still prints CMYK instead of only K)
So then I say OK so.. let's use the Multichannel document instead, which it actually seems to print on K only (while CMY=0), it only allows me to save as PSD. and when I try to place it on Indesign... I have a message saying that this file is using an unsupported colour space, only RGB,CMYK, lab, indexed, and bitmap are supported by the photoshop filter
On top of that I have been asked for a Jpeg image in black and white which prints only K (while CMY=0). I have tried with channel mixed presets and even though the info on screen is now C=0, M=0, Y=0 and K= various values, when I send it to print. The printer still prints with all the CMYK colours
Any advice would be so much appreciated!
Thank you

Converting to CMYK?

I made a brochure in Pages that I'm having printed. I saved the file as a PDF to send to the printer, and unfortunately he tells me that it's in RGB, so the blacks will look quite bad once printed.
So the question is, how do I convert this to CMYK, the necessary format? I tried saving it as a PDF, then editing the PDF in photoshop to be a CMYK file, but the type remains in process, so that was hopeless.
I'd appreciate any ideas.

So the question is, how do I convert this to CMYK, the necessary format?
Always, always, always use the PDF/X-3 filter in the Apple ColorSync Utility to set up a filter for the particular printing process you will be producing. Save your filter and simply select that filter when you wish to use the same printing process again.
Technically, your question is in a sense non-sense. Look at it this way. What you want is that a photographic object is converted from a three component/three channel colourant model to a four component/four channel colourant model. Let's call the input colourants red, green and blue and lets call the output colourants cyan, magenta, yellow and 'key' which we will write instead of black.
Having said that, we haven't said anything about the colour of the red component, the colour of the green component, or the colour of the blue component on the input side, and we haven't said anything about the colour of the cyan component, the colour of the magenta component, the colour of the yellow component, or the colour of the key/black component.
If we don't say anything about the colours of these components, and their primary, secondary and tertiary combinations, then we have no idea what colours will be formed when these colourants are imaged on different configurations of the colour devices in our workflow. The magenta colourant could come out very, very, very different on an studio printer and a shop floor press.
What we need to know is what colours a specific colour device in a specific configuration (inks, toners, waxes, papers) and a specific calibration is capable of forming, and then we need to characterize that with a colour test chart. We also need to calculate a set of tables that will give us the amount of colourant that reproduce the colours that colour device is capable of forming.
Finally, we need to tinker a bit. We want the sheets of the press to dry fast, so we add K where CMY are neutral throughout the colour space. We want the shadows to retain hue and saturation detail, so we have a soft clipping that opens them up and we take care not to take out too much CMY which would loose us the colour contrasts. And so forth.
Therefore, there is no such beast in the wide world of managing colour information as the beast called 'CMYK'. First of all, it could be that the laydown order is Y first and not C first, and only the characterization for the intended printing condition will know what colours are formed if Y is first and not C. Then there are the lightness levels available for the printing condition - pick the wrong characterization to convert into and you may loose ten or fifteen lightness levels out of a hundred possible. And that is not to speak of the tint of the printing paper for which your characterization will compensate to neutral, if you pick the correct characterization.
So, find yourself a professional printer, propose a colour managed printing process, ask for the correct ICC press profile and plug that into the OutputIntent dialog in the PDF/X-3 filter, then plug the information on the areas outside the page dimensions proper used by the printer's process for bleed and trim, and plug in the printer's specification for flattening of transparency (if you have any).
/hh

In Photoshop CS4 extended, trying to apply sepia filter to a photo, need help

I've been re-watching the videos on smart filters, and also I remember having seen one video (either in NAPP or here or on Lynda.com) where one can make a nice sepia tone color for a photo. I see the option in the filter menu, at the bottom of the layers panel, and one can choose sepia, and then a layer appears, called photo filter 1, above my "smart object" image, but then I don't see any change. What do I do next, to get the sepia effect applied over my original (now smart) image? Can someone take me from there, or give me a reference to the training video that covers this?
Thanks in advance.

Here's two other ways when in cmyk, but the settings below may need some
tweaking depending on which cmyk profile your using and your idea of what sepia
should look like.
For these to work, you'll have to desaturate the layer: To retain the smart
object, you could double click on the smart object icon, then in the image
that opens, go to Image>Adjustments>Desaturate and then save. This will
update the smart object in your original image.
1. Add a Color fill adjustment layer and set the layer blending mode to either overlay, softlight
or color.
2. Use a color balance adjustment layer and only adjust the Midtones.
MTSTUNER

PDF in CMYK color space?

I'm working on the most recent version of Pages from iWork 2008 running on the most recent version of Leopard, and I have to create a PDF in the CMYK color space for publication, but I do not have Acrobat Distiller.
Is it possible to create a CMYK PDF with ColorSync filters? I have tried using the "Generate PDF-X/3" filter, with "Generic CMYK" as the target profile and transparency flattening, but the printer still says that my PDF is in the RGB color space. If not, is there any other way to create a CMYK PDF from Pages or to convert a RGB PDF or PostScript file to CMYK using ColorSync Utility? Are there any alternatives without purchasing Adobe Acrobat? What about if I first convert images to the CMYK color space before importing them to Pages?
I have seen similar questions posted elsewhere, but I can't find a straight answer anywhere.

1. Obtain the ICC profile from the printer for his output device.
Correct. Either the shop printing condition or an ISO 12647 printing condition to which the shop can configure and calibrate the printing condition it is selling you. If the latter, you can get default ICC printer profiles for standard printing conditions at www.eci.org.
2. Create a filter in ColorSync Utility for generating PDF/X-3 documents with the ICC profile as the output intent (besides flattening the transparency and applying an appropriate resolution).
Correct.
3. Print to PDF in Pages.
Incorrect.
Your PDF/X-3 filter will become available in the system dialog for File > Print > Save as PDF. In saving as PDF you pick your PDF/X-3 filter as the template for the save process.
4. Use ColorSync Utility to modify the resulting PDF with the filter I created in ColorSync Utility.
(or 3-4. Print directly to PDF through the filter from Pages)
Your second step to combine 3 and 4 is correct, your first step 4 to save to disk and then postprocess in the ColorSync utility is incorrect.
5. Send this PDF/X-3 to the printer.
Correct.
It seems that no hard conversion from RGB to CMYK should be necessary if I take these steps, is that correct?
Correct.
If I send the printer a PDF in the RGB color space, should it cause problems for him to convert the PDF himself to the color space of his output device?
No.
You create three channel RGB images in the RGB colourant data model (it's just a model, it is not a colour space which a size and a shape of the gamut).
You save your colourants to disk in TIFF or PDF format with the ICC profile for the capture colour space (e.g. the ICC profile for your specific scanner with a Kodak EktaChrome IT8) or correction colour space (e.g. Joseph Holmes' RGB working space for EktaChrome). This ICC profile is the _colour space_ that you can view in the ColorSync Utility as a specific size and shape of gamut. The colour space determines what colours the colourants in your TIFF or PDF image should reproduce on different colour devices.
You now have a pagination with photographic objects in three component RGB, and you know what colours those colourants are supposed to reproduce. You then include the production profile for the printing condition. Your source profiles must match to this destination profile in the matching session, so all your photographs get converted to the SAME ink limit, the SAME graybalance and so forth. This unifies the inking behaviour and the colour formation for your printing.
If you imagine that in your pagination you place photographs which are manually converted into four component CMYK using a different ink limit, a different graybalance and so forth then you have not unified your inking behavour and colour formation for the printing process. This is IDIOTIC because the only way to correct in this case is to change the calibration of the individual inking zones on the offset press - increasing or decreasing the cyan, magenta, yellow or black for that zone.
It used to be that lithography on the press was the only way to work. This was in the days of EPS and EPS DCS, and before that in the days of photographic printing masters pasted together manually piece by piece to make the printing planes. Nobody in their right mind works that way today.
/hh

RGB to CMYK gives me a white glaze? how to get rid of it

In photoshop cs5 when i convert an image i am working on from RGB to CMYK i get a white glaze over the image? as if i have added a photo filter or something? do you know how to prevent this on a mac computer?

Apple Custard Studios wrote:
…yes i can see that it is broke, but if you look in your last post the before image is in there for some reason, and the after picture is at the top in the earlier discussions.
Sorry, I don't understand what you're trying to say here. How can the "before" image be in any post of mine if I have never been able to see it?
The image I posted in my post, was your "after" image CORRECTED by me as explained in that post:
"Converting it to sRGB and setting the black and white points via a quick Auto Levels adjustment, brings about an improvement."
In other words, I downloaded your "after" image, opened in Photoshop, went to the Edit menu and used Convert To Profile to convert it to the sRGB color space, then I ran and Auto Levels adjustment. That's how I fixed your mess.
Apple Custard Studios wrote:
Hi station_two
…When i convert from rgb to cmyk, i SIMPLY GO: Image > mode> then click cmyk?…
Geebus Chrysler! No, that is indeed not just "primitive" but totally wrong. Go to the CONVERT TO PROFILE menu item in the Edit menu in Photoshop, and from that menu select the specific CMYK profile you want (or your printer requests). Be careful to select CONVERT TO PROFILE, do not under any circumstances choose "Assign Profile"! Converting to the appropriate CMYK profile will also automatically change the image mode to CMYK mode.
Apple Custard Studios wrote:
…which i am unsure it it may mean i have wrong profiles set, but if so what would i need to change it to?…
Apple Custard, it's obvious that you have no clue as to what Color Management is, and teaching you Color Management step by step here exceeds the scope of what can be accomplished in a forum. A good place to start reading up on it is here:
http://www.gballard.net/psd/cmstheory.html
In a nutshell: Your Monitor profile should be the file resulting from your calibrating and profiling your monitor with a hardware calibrator puck. Calibrate and profile your monitor regularly and often. Your monitor profile thus will be device-dependent, specific to your monitor.
Your working space, on the other hand, should be a device-independent profile, such as Adobe RGB or sRGB. It should NEVER, ever be your monitor profile.
Your target profile when printing should be device-dependent and specific to the combination of ink, paper and printer model you'll be using. For the web, create a copy of your image file and convert it to sRGB, then save it as a JPEG as needed.
Good luck!

RGB to CMYK (channels) with PixelConduit plugin

As I'm unable to submit a user tip yet, I thought I'd share my solution here for anyone looking to simulate CMYK channels in Motion/FCPX.
PROBLEM
For some reason you want to convert your RGB source clip to extract individual CMYK (Cyan, Mangenta, Yellow, blacK) channels. For example you'd want to simulate the printing process of a book on a printing press.
SOLUTION
Use a free FCPX/Motion 5 plugin caled PixelConduit, a node-based visual effects design system. Install the plugin before launching Motion.
To extract CMYK channels, I used a (linear) RGB to CMYK formula:
Black   = Math.min( 1 - Red, 1 - Green, 1 - Blue )
Cyan    = ( ( 1 - Red )   - Black ) / ( 1 - Black )
Magenta = ( ( 1 - Green ) - Black ) / ( 1 - Black )
Yellow = ( ( 1 - Blue ) - Black ) / ( 1 - Black )
and translated it to PixelConduit's nodes.
Clone your source clip four times. Call the clones 'Cyan', 'Magenta', 'Yellow' and 'Black'. Navigate to Library > Filters > Conduit Effect System, choose Conduit and apply it to each clone layer. In Inspector, click 'Show Conduit Editor' and assemble the following node tree for each layer:
K (black) layer:
C (cyan), M (magenta) and Y (yellow) layers are identical except the first channel selection:
So, for M and Y layers change the 'Separate RGBA' node to output the green and blue channel respectively. You can copy/paste the whole node tree between intances of the filter so you don't have to create everything again from scratch.
You should now have four layers outputting a simulation of C, M, Y and K channel in greyscale. If you'd like to present these channels in colour you'd need to add Colorize filter to each clone layer:
And finally, if you use Multiply Blend Mode for each clone layer group you'll get a pretty close colour composition to the original source clip! By fine-tuning colour values in Colorize filters and/or tone curves in Conduit you could probably get a perfect conversion.
Colour values used in Colorize filter:
Remap White To:
1, 1, 1 (all)
Remap Black To:
0, 0.61, 0.89 (cyan)
1, 0, 0.5 (magenta)
1, 0.95, 0 (yellow)
0, 0, 0 (black)
That's it! Hope it can help anyone :^)

As I'm unable to submit a user tip yet, I thought I'd share my solution here for anyone looking to simulate CMYK channels in Motion/FCPX.
PROBLEM
For some reason you want to convert your RGB source clip to extract individual CMYK (Cyan, Mangenta, Yellow, blacK) channels. For example you'd want to simulate the printing process of a book on a printing press.
SOLUTION
Use a free FCPX/Motion 5 plugin caled PixelConduit, a node-based visual effects design system. Install the plugin before launching Motion.
To extract CMYK channels, I used a (linear) RGB to CMYK formula:
Black   = Math.min( 1 - Red, 1 - Green, 1 - Blue )
Cyan    = ( ( 1 - Red )   - Black ) / ( 1 - Black )
Magenta = ( ( 1 - Green ) - Black ) / ( 1 - Black )
Yellow = ( ( 1 - Blue ) - Black ) / ( 1 - Black )
and translated it to PixelConduit's nodes.
Clone your source clip four times. Call the clones 'Cyan', 'Magenta', 'Yellow' and 'Black'. Navigate to Library > Filters > Conduit Effect System, choose Conduit and apply it to each clone layer. In Inspector, click 'Show Conduit Editor' and assemble the following node tree for each layer:
K (black) layer:
C (cyan), M (magenta) and Y (yellow) layers are identical except the first channel selection:
So, for M and Y layers change the 'Separate RGBA' node to output the green and blue channel respectively. You can copy/paste the whole node tree between intances of the filter so you don't have to create everything again from scratch.
You should now have four layers outputting a simulation of C, M, Y and K channel in greyscale. If you'd like to present these channels in colour you'd need to add Colorize filter to each clone layer:
And finally, if you use Multiply Blend Mode for each clone layer group you'll get a pretty close colour composition to the original source clip! By fine-tuning colour values in Colorize filters and/or tone curves in Conduit you could probably get a perfect conversion.
Colour values used in Colorize filter:
Remap White To:
1, 1, 1 (all)
Remap Black To:
0, 0.61, 0.89 (cyan)
1, 0, 0.5 (magenta)
1, 0.95, 0 (yellow)
0, 0, 0 (black)
That's it! Hope it can help anyone :^)

How do I output a pdf in cmyk?

I'm trying to output a 32 page magazine that I've made in pages for output on a web press. I need it to be in cmyk but it seems the pdf is coming out in rgb. Does anyone know if I can export a pdf in cmyk?

I made an other choice
so that they may be used from every user accounts, but yours is OK.
Now when you want to use it, cmd + P > PDF > select a filter.
Don't worry, I just shortened the file names.
Yvan KOENIG (VALLAURIS, France) jeudi 14 juillet 2011 17:49:46
iMac 21”5, i7, 2.8 GHz, 4 Gbytes, 1 Tbytes, mac OS X 10.6.8
Please : Search for questions similar to your own before submitting them to the community
To be the AW6 successor, iWork MUST integrate a TRUE DB, not a list organizer !

PDF reduce file size filters and CMYK to RGB conversion

This doesn't seem to be on-topic to this forum, but I'm hoping someone here has the expertise to answer my question. We have some scripts which take a series of press-quality pdfs and use the "reduce file size" filter to prepare them for viewing on the web. We run these scripts on a 10.4 machine, and the filter works very well, reliably reducing file sizes of all sorts of pages.
When we tried to upgrade the machine, we discovered that the quartz filtering has changed in 10.5 and 10.6. While it's usually an improvement, getting maybe 5-10% better compression ratios, it has become unreliable in that about 5% of my files fail spectacularly -- they blow up to 3, 4, 5, 6 times the original size.
The other thing that happens is that the 10.5/10.6 filters munge the colors up. I found the solution to this -- in the ColorSynchUtility, make a duplicate of the Reduce File Size filter, and add a Color Management Component called Convert To Profile. This allows me to set a filter that converts the CMYK content to RGB. The problem is that there are about 40 choices of profiles, and it's not at all clear what I should use. Many of them have printer manufacturer's names in them, some say "Adobe", others have cryptic codes (probably referring to various RFCs and schemes). I've tried a couple of the ones that don't look like they are for printers, basically chosen at random. They all produce files of slightly different sizes for the reductions that go well, but on the files that blow up, some filters are better than others. (For example, I have a 5MB page which reduces to 1.4MB with the 10.4 filter, but blows up to 27MB with the "sRGB IE61966-2.1" profile, but only 12MB with the "Adobe RGB" profile.)
So I have 2 questions:
1) Is there any way to configure a 10.5/10.6 custom profile so that it behaves as reliably as the 10.4 "stock" PDF Reduce File Size works? It doesn't have to be the most wonderful compression algorithm out there, just so that it never or rarely has a file blow up in size.
2) For converting press documents to pdfs that are going to go on the web, what is a good "Convert to profile" to use of the 40-some choices on the pull-down menu?

Cathy,
You have posted your question in a forum dedicated to the Final Cut Studio application Color. It is a very specialized program to grade (adjust) the color in video/film images. We know nothing regarding PDFs.
Have you tried posting this on an Adobe support site?
Good luck,
x

Change a PMS color to a specific set of CMYK values in a PDF?

IS this possible? without the use of Pit stop?
Here is my dilemma, I want to take an existing pdf with one spot color and make it basically a registration color of 100% of each CMY and K. I can do this manually through Illustrator but to do this over a thousand times is MUCH to tedious.
Anyone know of any other options to do this?
some more details, I work for a specialty print shop and happen to have a 4c DI press. We are trying to get this one color spot job to image the cmyk outputs all at once BUT having different copy on each head/CMYK plate.
So far we can do it through Acrobat to postscript file to RIP BUT I think, because the original file is a PMS/spot its knocking out.
SO we tried through Illustrator which seems to work its just tedious, where we are trying to save time not add more.
Its a crazy work around but if we could get it to work would be great for this job.
Maybe my questions should be is there a way to force the process colors to over print?
WE tried it on the rip and its not working there either.

1. Place PDF in InDesign
2. Make a new CMYK spot color, defined 100C 100M 100Y 100K
3. In Ink Manager, find spot color of the PDF in the list.
4. In the ink alias for this, pull down and select the spot color you created in step 2
5. Still in the Ink Manager - beside the spot color you created in step 2, click once on the spot icon on the left to change it to process
6. Output a new PDF from InDesign
Once you have the InDesign file set up, all the work is done for any future PDF files you place. InDesign simply takes the spot color in the original PDF (ie Pantone 293 C) and maps it to your 100 CMYK spot. The 100 CMYK spot is in turn forced to process by the ink manager (the ink manager can be accessed in the flyout in the swatches panel)

CMYK to CMY Filter?

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