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PDF file, make image dead black, it's now sort of greyish? Photoshop experts?


Chris Wilson

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PCB images of a PCB. The black is of the traces,, mirrored. But when I, or a pro print shop, print to clear film the image is not a dense black. if I do a Print Screen of the page 4 of the files that I want to use, and open in Windows Paint, and then draw a black line across a blown up pad, it seems obvious to me that the PDF is not true dead black.

 

Can it be altered in something like GIMP of Photoshop to make all traces dead black without losing any edge definition of the traces and keeping the images the exact same size?

 

 

As say, page 4 is the only one of relevance to my needs, thanks

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If you open the original file in photoshop and change the file properties to CYMK it will be a start. As for changing the actual paths to true back it should be a case of just filling the selections with 100% black. Im not sure if you'd lose some definition on the tracks it depends what the original file is, a raster or vector?

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If it's in PDF which is a vector format hopefully it was created as a vector in adobe illustrator for example.

 

You will know if it's a vector if you increase the size of the PDF and the edges are still smooth. If it IS a vector you'd probably be best editing the colourspace in Illustrator rather than photoshop. Perhaps Ellis can help here as i assume he works with vectors quite a lot.

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