Rich Black removal from PDF

Hi Team,
The PDF which we are supplying to prointer is reporting issue of rich black color used. Is there any way we can remove rich black from PDFs using acrobat professional.
Thanks in Advance!

Here's a previous discussion of the topic:
http://forums.adobe.com/thread/851346?tstart=0
And here's another helpful answer from another forum:
http://acrobatusers.com/forum/printing-prepress/how-keep-total-area-coverage-under-240

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How to achieve rich black in exported PDF?

InDesign CS5 on Snow Leopard. I have black set to display and output accurately (not rich black). Color settings are North America General Purpose 2. Proof Setup is set to Document CMYK U.S. Web Coated (SWOP) v2, so that I can see on the screen as accurately as possible what it will look like when printed.
A large, mostly black image covers my first page; it's an imported PSD. When I view the image in PhotoShop, it shows as 'rich black' - you know, on-screen 100% black. But when looking at it in InDesign, it appears a dull grey. It also appears a dull grey when exporting to PDF or printing it.
How do I get it to go to PDF and to print as crisp, perfect, 100% dark rich black?
If possible, I'd like it to appear on my screen roughly as it will in the exported PDF and the printed page.
Thanks!

Peter,
It isn't quite that simple. If you export PDF/X-4 or any PDF without color conversion at export, you may find that the subsequent printing system does in fact make some assumptions about R=G=B colors really being the equivalent of DeviceCMYK (0,0,0,K). This is often done at the RIP to resolve the problem of printing office documents, many of which produce only RGB colors where R=G=B is grayscale and the endpoints of (0,0,0) and (255,255,255) are the equivalent of DeviceCMYK (0,0,0,1) and (0,0,0,0) respectively.
Thus, my recommendation is that for any real control of black output using graphic arts software, do not rely on conversions from RGB to either give you pure black / grayscale or for that matter any rich black. It is too much of a crapshoot depending upon the rest of your workflow.
- Dov

100k black exporting to PDF as rich black

Hey guys,
I've rattled my brain for long enough over this issue, it's time to ask the wider community.
When I export a pdf with any of my export profiles, all overprint 100k (black swatch) blacks are exported as CMYK. It doesn't matter if it's text or a graphic, the whole document is CMYK.
My export profiles have been bulletproof for the past 2 years, I use numerous printers so I always export using a very generic profile. Within the last two days, something has happened with my settings and eveything I export has this issue. I've poured over my settings and none of it has led me to an answer.
My only solution is converting to my generic profile with numbers preserved.
This makes the problem go away but it doesn't answer the question of why it has changed after all this time.
Help.
Screenshot of doc open in InDesign with text selected with black swatch selected:
Screenshot of doc in Acrobat pro seps with black unchecked:

Actually, a better question might be how you avoided the rich black using what you believe are the exact same settings over the past two years!!
Simply stated, if you do a PDF export and the CMYK content in your document is in a different CMYK color space than that specified for your output and your export setting call for converting colors to the output color space without the preserve CMYK values specified, there will definitely be a CMYK to C'M'Y'K' conversion occurring. This has been true since at least the first CS version of InDesign (InDesign 3).
The problem with CMYK to C'M'Y'K conversions is that they are a 4-3-4 conversion. The CMYK values are not directly converted to C'M'Y'K' but rather, converted first to the color management connection color space by use of the input profile and then from that color space back to the CMYK color space specified in your export settings. Such 4-3-4 conversions do not preserve pure colorant values. Thus you have the possibility of ending up with rich black if your content's color space and the output color space differ. The preserve numbers option was put in to effectively ignore CMYK to C'M'Y'K' conversion entirely and only deal with the conversion of RGB color spaces to the output color space. (Another technology, known a “device link profiles” can be used for CMYK to C'M'Y'K color conversions, preserving pure colorants, especially black. Unfortunately, InDesign doesn't support device link technologies!)
Then we must come back to why things supposed worked the last two years without specifying the “preserve values” option?!?!? One possibility is that previously your default CMYK color space exactly matched the output color space, thus bypassing any color conversion at all!
- Dov

Rich black from laser for positives

Hello,
I have a RICOH Aficio SP C811DN printer, and I am having the worst luck getting it to print real rich black. I'm using it to print film positives on polyester vellum for burning silkscreens.
Between the 30+ printer profiles and numerous other settings, there are over 20 million different ways to print one document.
[code]Illustrator Color Management:
2 Choices for Color handling
Let Illustrator determine colors
Let PostScript printer determine colors
30 Printer profiles including:
Generic CMYK
U.S. Web Coated (SWOP) v2
150-line Pantone
RICOH Aficio SP C811DN
4 Rendering Intent Choices:
Perceptual
Saturation
Relative Colorimetric
Absolute Colorimetric
Printer Dialog Color Matching:
ColorSync or In Printer
Which Profile for ColorSync? Printer profile?
Printer Features:
Color Smoothing: On or Off
Color Mode: Black/White or Color
Gradation: Fast, Standard, Fine
Color Setting: Off, Fine, or Super Fine
Color Profile: Auto, Photographic, Presentation, Solid Color, User Setting, CLP Simulation1, CLP Simulation2
Dithering: Auto, Photographic, Text, User Setting
Gray Reproduction: Black/Gray by K, Black by K, CMY+K, Black/Gray by K (Text only), Black by K (Text only)
Black Over Print: On or Off
CMYK Simulation Profile: Off, US OffsetPrint, Euroscale, JapanColor, PaletteColor[/code]
Add all these options up and you get[b] 24,192,000[/b] different, unique ways to print a document. I really don't have the time to try them all out. How can I make sense of it all? :?:
Do you have any advice? I'm stuck with dark gray printouts. :(
Thanks
-Dodd
Art Department
Calconix, Inc.
TimeZone ®
(888)256-2544
(610)642-5921
(610)642-5928 Fax

make sure your art is 'rich black (color space CMYK-assign new color 40-50-50-100)then...assuming that you have Acrobat--save illustrator file as PDF and print that from acrobat(high quality print setting)...or...further assuming that you have Indesign--save illustrator file as EPS and place in Indesign and print from there.

Blacks are becoming rich blacks when exporting to PDF in CS2

Im having a funny problem I have never noticed before where when I export to PDF from InDesign CS2 all blacks turn to rich blacks. I am verifying this by opening it up in Acrobat and viewing the separations.
I have narrowed it down to a single setting. I can replicate it by selecting the "High Quality Print" preset and then in the Profile Inclusion Policy selecting "Include All Profiles" then exporting.
This shouldn't be... Colour conversion is turned off so the PDF compiler should not be modifying the colour... just sending a tag along with it.

I understand the processes of colour management and in no way am I trying to turn it off. Can somebody please try it out and see if my original problem is happening to them. I'm only asking about one variable... The Profile Inclusion Policy.
I understand "No colour conversion" option does not mean turning off colour management... Its keeps all source files in their original colour space. I know this stuff.
I also know there is not a lot of different between the hight quality print preset and the press quality other than the press preset has the Convert to Destination option set for colour conversion which forces objects colour to that of the destination profile. However this is not important... And please dont argue about this point because I'm only looking for a solution to one problem and I'm not a novice.
I want to know why when I select include all profiles the black is converted to a rich black?

PDF creation causes rich black colors to shift

I'm designing a book cover. There are three main areas: front, back and spine. Each area has specified the default "black" color in the swatches panel. This color uses 100% K in the CMYK color space. In the preferences panel, under "appearance of black", I have checked to print and display blacks as rich black. Everthing looks great on the Indesign file. My blacks are as specified. Everything has been double-checked on the swatch panel to be set to this black color, which is a non-editable color (always remains 100% K on the CMYK setting).It has been displaying just fine on the file, as a rich black, no color shifting ever whatsoever until doing the following:
When I make a PDF using the "Export" window, I select PDF/x-1A as my printer specifies. I create the PDF, and open it, only to see that my blacks are being shifted to a shade of deep brownish black.
On the first few attempts, only two of the three areas specified above did this. ON the next attempts, all three areas look the same. This is weird. I'm very disappointed with the strange issues present in Indesign, as I am trained with Quarkxpress and find it to work flawlessly in comparison, especially with something like color output.
What am I doing wrong?
When I change settings, for example, change the color management to "none" or leave it in the default for the PDFx/1-a, it doesn't make any difference in this glitch in the output.
Help!
Thanks.

The Appearance of Black setting to print all blacks as rich black ONLY affects printing or exporting to RGB devices (essentially printing to desktop printers or PRINTING to PDF with Composite RGB or Composite Grayscale selected). It has no effect at all on EXPORT to PDF.
>I changed my 100%K only blacks to genuine rich blacks of 100%K 25%C 25%Y 25%M and the problem is corrected.
You said this is a book cover. That implies that the output will be printed, not viewed on screen. For printed output it is ESSENTIAL that you set blacks to display accurately. You should also turn on Overprint Preview when judging color. You'll probably get away with your rich black in any type over 12 points or so where it might be applied, but it's generally not a great idea to use rich black for type in small sizes. Rich blacks also generally use slightly more cyan than yellow and magenta to compensate for ink impurities.
Do you have a high-end monitor? Is your monitor calibrated and profiled using a colorimeter? If not, you can forget what you see on screen. The odds that it is anywhere near accurate are similar to the odds of winning the lottery. Are you using the same color space in Acrobat as you are in ID? If you change the color space, the appearance of your colors will change.
When you export to PDF/X-1a you are converting everything to CMYK using a target color space. By default the conversion option is set to preserve numbers. If your imported art has an embedded profile that differs from the destination, that will be honored and color numbers will be changed to preserve the appearance of color, as much as possible taking into account different gamuts, and untagged imported art, along with native objects will all be presumed to be in the current working space in ID, and cmyk numbers for those objects will be preserved. If the destination space differs from the working space, thew appearance of these colors will shift, but 100% K native objects will continue to be 100% K in the PDF. A conversion to a destination that differs from the working space WITHOUT preserving numbers will result in 100% K being changed to a 4-color mix that mimics the appearance of 100% K output in the working space.
Knowing the destination space in advance is vital if you are doing a CMYK conversion. CMYK profiles are "device dependent" and CMYK-to-CMYK conversions are destructive, both in terms of potential loss of color (and you don't gain by going from a smaller to a larger gamut space) and conversion of solid colors to 4-color mixes which is particularly problematic for black type and thin rules.

Grayscale InDesign becomes Rich Black PDF

I have an InDesign CS6 file with 100K black-only line art placed as EPS from Illustrator CS6. The resulting PDF is rich black and I cannot find anywhere how to control the color at PDF export. I thought saving as an .AI file would fix it, I've tried saving back to every legacy version as both EPS and AI and that doesn't work either, so it must be something happening at PDF export. My only color options are all CMYK variants.
Anyone have any tricks to get around this flaw?
Thanks,
Glen

First of all, EPS from Illustrator is absolutely archaic. Save the Illustrator as PDF/X-4 or High Quality Print and place that PDF into InDesign.
Secondly, better check what color space is used in Illustrator. If the Illustrator document is setup as RGB as opposed to CMYK, your black-only line art will be actually RGB black. There is nothing you can do about fixing that in InDesign.
- Dov

How can i create a hyperlink annotation on a pdf file using preview? the tool is removed from the toolbar

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Black and white PDFs printing in changing colours from preview

I am often printing black and white PDFs from preview with my HP PSC 1510 All in one printer and scanner. After updating to OS 10.6, my PDFs have been coming out in colour. They usually start in black, then change in the middle of a line of music or text to purple, red, blue and green. The longer the document, the more different colours I get. This is not occuring when printing black and white documents from NeoOffice, only when printing black and white PDFs from Preview. As this is what most of my printing consists of, this is extremely annoying.
I am high on black ink, as I recently changed catridge and I have also made certain that the printer driver knows this by using the printers and faxes preferance panel and selcting the" levels of material" button to update this, and it seems to understand that I am high on black and low on colour, but still the problem occurs with every PDF i print. (If this button is called something else, but similar, that is because I am using a norwegian system and don't actully know what it is called in the english OSX.)
There is no "print in black and white" button in the printer dialog either, so I can't fool the printer to print in black and white what it perceives as colour in my black and white PDFs either.

Be sure you have applied both the 10.6.2 update and the absolute latest drivers for HP from Apple:
http://support.apple.com/kb/DL907

How to create black and white pdfs from autocad drawing

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Using 'create pdf' from Acrobat Pro, Acrobat pro will create a pdf from the autocad drawing easily with all text searchable, shape fonts, TT fonts, no matter what the width. Fantastic. However, there is no option that I can see to create the pdf in just black and white. It creates the pdf in drawings original colors. How do I create a black and white pdf using acrobat pro? Thanks.

@gordon15
The only way to change the color of the printouts from your iPhone is through HP's free mobile app "HP ePrint Home&Biz". This is available in the App Store.
Simply download and install the app, choose a file to print from within the app, then press the icon at the bottom right of the screen that is a wrench and printer. This should then give you the option to choose the color output. Make your selection, press "Done", then press "Print."
If you are not seeing this option, you may need to setup ePrint for the printer and then register the app. This registration will also give you more functionality with the app.
If I have solved your issue, please feel free to provide kudos and make sure you mark this thread as solution provided!
Although I work for HP, my posts and replies are my own opinion and not those of HP.

[solved] How to remove specific pages from PDF file?

I'm looking for a way to remove few pages from PDF file.
Last edited by delor (2008-07-04 10:28:22)

To remove first page I did this:
pdftk original.pdf cat 2-end output result.pdf
Any other propositions ?

Open Photoshop image from PDF into Photoshop and change cmyk text to 100% black

when I have a supplied PDF file that has cmyk text, I open the image in Photoshop but I don't know how to change the cmyk text (some very small and some large) to 100% Black. I used to know the short cut key to do this but I can't remember. I used to use the marque tool then use a short cut key that would knock the cmy out of the k. Can some one please tell me how I can achieve this in a flattened photoshop file opened from PDF into Photoshop. Thanks

One way to do this:
Use a hue/saturation adjustment layer, click the Colorize box and drag the Lightness slider to -100. The black will go to C:0, M:0 Y:0, K:100. I'm not aware of a shortcut for this, perhaps someone more informed could help there. You would only want to apply it to the text, clipped to a separate text layer ideally, but if your file is already flattened you could apply it via a selection/masking.
Mike

True black converting to rich black when importing one specific PDF

I am using InDesign CC. When importing one particular CMYK PDF file into my document, the black text is converting to 4-color rich black. I have InDesign 5.0 on another computer. Following the same procedure on that computer, the text remains 100% K. My settings are the same, as far as I can tell.
Other designers across the country using this same ad have no problem. The text remains 100% K. We are all using InDesign, but I am the only one using InDesign CC.
I do not have this problem with any other ads (so far), but I have been using CC for only two months.
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It has been over a month since I walked through her settings with her, Rob, and the minute details have been replaced in my brain. I do know that she built the ad in CMYK, used 100%K for text, left the layers unflattened, ensured she had a background layer. In her PDF output settings, she converted to destination, and her destination profile was CMYK SWOP 2. I had her try CMYK web uncoated v2, as well. I don't recall what her overall color setting was set to (North America General Purpose? Custom? Again, nothing that alarmed me).
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As far as changing the assigned profile within InDesign, yes, I tried that. It didn't help. I believe I exhaused all possible combinations for output.
Good to hear (in a sick sort of way) about the problems with Acrobat. I had read about Acrobat having difficulties with preserving numbers, so I wasn't as concerned about the output preview. But on the other hand, I wasn't sure if it might be an "a-ha" symptom for this particular PDF.
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How to remove black borders from picture?

http://www.homeofthenutty.com/twilight/screencaps/albums/TwilightPart2/Twilight1833.jpg
Is there a Photoshop tool that can easily remove the black borders from pictures like this? Anyway to extract the image from the black background?

You may be able to use the Image - Trim feature, though it requires exact pixel color matches, which may not be true with lossy compression (e.g., JPEGs).
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Watch your copyright issues if modifying copyrighted works
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Rich Black removal from PDF

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