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#1 Posted : Monday, July 26, 2010 7:14:50 AM(UTC)

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I am evaluating the Graphic Mill for .NET to use with a software project I am working on. So far it looks really good, but I have a special requirement and I am not sure if it can be done.

We are rendering output pages to be sent to a printer. The printer wants the files in CMYK where text is set as 100% black only. We have our code currently outputting in CMYK but we have not separated out the text. I believe I can output two images, one with just the text and one with the rest of the built up color in CMYK, but I am not sure how to put the two together?

• How do I separate out just the black in an RBG image and make it 100% black (no C M or Y)

• Once I have this new image, how to I overlay it on top of my main image (the one missing all the text?)

#2 Posted : Monday, July 26, 2010 8:22:37 PM(UTC)

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Hello Jason,

Thanks for contacting us.

I created simple application. It allows:

  1. loading the image;

  2. creating the CMYK text which is 100% black only;

  3. merging the image with the text to one file;

  4. saving the result.

I attached the zip file with this application for your reference. You can read more details about this sample in the Drawing Text on a CMYK Bitmap article.

If you have additional questions on it, please feel free to let me know.

File Attachment(s):
CMYKTextSample.zip (2,922kb) downloaded 5 time(s).
Best regards,

Dmitry Obukhov

Technical Support. Aurigma, Inc.

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