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Protel negative

Discussion in 'CAD' started by Fernando, Mar 26, 2005.

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  1. Fernando

    Fernando Guest

    I use Protel 2.8 and it would like to print the drawings PCB in negative.
    How to do that?
    TIA
    Fernando Carvalho
     
  2. Same answer as I gave to your identical post in
    sci.electronics.design, i.e:
    "If Protel 2.8 has no built-in facility for that, copy the image to an
    image editor which does, such as Paint Shop Pro."
     
  3. I use Protel 2.8 and it would like to print the
    Like Terry said, you need to use an image editor
    like Paint Shop Pro.

    First you need to convert the layout to a raster
    image (i.e. a bitmap, such as a GIF, TIF or PNG
    file).

    I use a freeware print capture program called PDF
    Creator (sourceforge.net/projects/pdfcreator), which
    can capture to raster files as well as to PDF. Use
    PFW's print feature. Capture at 600 dpi, and if you
    need more detail, "print" the image at 2x scale. (This
    will make the file larger, of course.)

    Save the captured file as a GIF or PNG file (don't
    use JPG, it's designed for continuous-tone images
    not for sharp contrast diagrams). Then load the
    image into an image editor such as Paint Shop Pro,
    crop it (to save processing time), and convert it to
    negative.

    Kris
     
  4. Robert Baer

    Robert Baer Guest

    ....also, JPEG does lossy compression, adding noise to the image which
    can be objectionable.
    The geaer the compression, the worse it becomes - to the point of
    pictorial gibberish.
     
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