Purple-ish small lamps in contract printers of yesterday...

Discussion in 'Contact Printing' started by Clueless, Nov 27, 2005.

  1. Clueless

    Clueless Member

    Dec 6, 2004
    Multi Format
    In the 1940's units such as the Morse had many on/off switches; white lights, and even red lights; but what were the special qualities of the small purple-ish lamps that are now hard to come by? I understand that contract printing was common, that dodging and burning-in was possible via which lamps were on. TIA
  2. Jim Noel

    Jim Noel Member

    Mar 6, 2005
    Large Format
    I trust you have not been looking directly at those little bulbs as if they are what I think they are, they produce ultra-violet. In fact they produce so much UV they also make Ozone which you can smell.

    When you look at them, un-powered, do they have a little flat disc near the top? If so they are useful, but do produce UV.

    If I can pull the name out of my rusty trap memory, I will send it to you.