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Aaron27573756bce9
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December 2, 2023
Question

Printing white ink from Photoshop file on large format printer

  • December 2, 2023
  • 1 reply
  • 6142 views

Customer has sent a file to be printed on dark gray material and has specified we need to use white ink for a faint shadow over the print. Printing white ink with an Illustrator file isn't an issue because they've been solid shapes for our use. However, this new file is mostly being used as a highlight, thus no hard lines which means I can't just bring the file into Illustrator and re-draw the white ink portion. I've attached a screenshot of the file to show what I'm looking at and would appreciate any assistance. Thank you in advance!

 

We are printing on 60" Epson printers using Onyx RIP software. MacOS for design, Windows for printing.

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    1 reply

    Stephen Marsh
    Community Expert
    Stephen MarshCommunity Expert
    Community Expert
    December 2, 2023

    You need to create a spot color channel in Photoshop for the white ink, named just as you would in Illustrator, saving as a file that includes the spot channel, such as Photoshop PDF.

     

    https://helpx.adobe.com/au/photoshop/using/printing-spot-colors.html#about_spot_colors

      NB, colourmanagement
      Community Expert
      NB, colourmanagementCommunity Expert
      Community Expert
      December 5, 2023

      @Stephen Marsh I'm guessing the client has perhaps sent the OP an RGB or CMYK file, so, would the white channel  perhaps need to be created in a multi-channel conversion, I'm sure that’s something you know far more about than me ';~} . I think GMG do a multi channel plug in for Photoshop.

       

      Or might this give some clues


      neil barstow, colourmanagement net - adobe forum volunteer - co-author: 'getting colour right'
      google me "neil barstow colourmanagement" for lots of free articles on colour management

        Stephen Marsh
        Community Expert
        Stephen MarshCommunity Expert
        Community Expert
        December 5, 2023

        @NB, colourmanagement 

         

        If the objective is to print white ink and only white ink... Then I would simply make a grayscale file with white (blank) as the colour.

         

        Then create a spot channel for the white ink with the appropriate name that will be recognised and mapped at the RIP..

         

        No need to complicate things with MC mode..

         

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