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watermark ink for inkjet

Discussion in 'Non OEM Ink & Cartridge Suppliers' started by gordon downey, Sep 9, 2016.

  1. Sep 9, 2016
    gordon downey

    gordon downey Newbie to Printing

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    hey everyone!
    I am making certificates for a client who requires a watermark in the paper. They want a proper watermark as in it is only visible when held up to light. I bought some ink for screen printing but it doesn't come out good as there is some fine detail in the logo. Then I added thinners and tried rubber stamping which is better but still not good enough. I have searched for watermark inkjet ink but had no success. My question is; does anyone know of someone who can convert my screen print ink into inkjet ink? Or of there is any other solution to my problem? I'd happily buy a cheap printer just for this job! Any advice would be great, thanks in advance!
     
  2. Sep 10, 2016
    The Hat

    The Hat Printer VIP Moderator

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    @gordon downey, as you like to experiment with inks to get the best results, then try using 5 % cyan with 15 % black for your logo, then reflect the image and print it on the back of the sheet, sometimes a very slight outline (stroke) of 10% yellow will mask the image so it’s not that noticeable when viewed from the back.

    Your Epson p600 should be able to handle this without using any other inks, you could try putting 5 ml of lemon juice in a spare black cartridge, as I said trial and error is the best way of achieving your goal, good luck...
     
  3. Sep 10, 2016
    PeterBJ

    PeterBJ Printer Master Platinum Printer Member

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    Should this simulated watermark be printed in negative, meaning that most of the paper is printed slightly grey, and the watermark is free from ink? The lemon juice is used as an invisible ink that is developed by heat, for instance by ironing the paper.
     
  4. Sep 10, 2016
    The Hat

    The Hat Printer VIP Moderator

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    @PeterBJ, that would do it too but only if you can print borderless with the negative image... ;)
     
  5. Sep 10, 2016
    akramjef

    akramjef Getting Fingers Dirty

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  6. Sep 10, 2016
    The Hat

    The Hat Printer VIP Moderator

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  7. Sep 10, 2016
    PeterBJ

    PeterBJ Printer Master Platinum Printer Member

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    stratman, The Hat and Roy Sletcher like this.
  8. Sep 10, 2016
    Roy Sletcher

    Roy Sletcher Printer Master Platinum Printer Member

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    Correct! The watermark is impressed into the still wet web of paper fibres during paper making with a special relief image roller called the "Dandyroll". It alters the fibrous nature of the paper with a distinctly visible and unique pattern.

    Main use is for branding, security, and anti forgery purposes purposes, so when you guys come up with a good, cheap, and easy reproduction let me know. Quite a few professional forgers will be willing to pay good money for a credible system that works, especially currency forgers.:)

    rs
     
  9. Sep 10, 2016
    The Hat

    The Hat Printer VIP Moderator

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    @Roy Sletcher, its relatively easy when you know how, and I ain’t sayin...:p
     

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