how to print grayscale image as process black?

Forum|Forum|13 years ago
November 27, 2012
2 replies
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how to print grayscale image to PDF as process black only rather than CMYK colors? I'm using FM10

PDF output

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Correct answer Arnis Gubins

Ed,

What file format did you save the image in? It's important, as Error indicates. If you left it as a PSD, then FM does an RGB conversion. A TIFF or an EPS will properly stay as greyscales (i.e. on the K plate). Other formats, like PNG in greyscale are actually Indexed colours and resolve to RGB when FM creates the PDF in the presence of Spot plates and hence components get mapped to the CMY plates also.

Here's a sample generated using SaveAsPDF with the CMYK option with the same "greyscale" file saved as PNG, TIF and EPS from Photoshop (note how the PNG isn't all there on the K plate):

Arnis Gubins

Inspiring

Are you certain that the images are actually greyscale instead of RGB or CMYK that look grey? What format is the image file? What joboption was specified for the PDF creation? How was the PDF created: SaveAsPDF or printing to PDF or printing to PS and distilling?

True greyscales should print on the K plate when you use the CMYK output option in FM10.0.2. Note: if you haven't updated your FM version, then earlier versions didn't produce correct CMYK or spot output.