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 Post subject: Phosphor printed on both sides.
PostPosted: Thu Nov 16, 2017 12:56 pm 
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Joined: Fri Feb 19, 2016 12:42 pm
Posts: 1
Location: Saffron Walden
The above error appears several times in Gibbons' Vol 4 Part 1, and is usually associated with booklet panes, especially Prestige panes.
Is the phosphor under the gum and if so is it detectable under a UV lamp?
If over the gum is it still detectable?
I have several Prestige Panes where it appears that you can see phosphor bands on the back, but there is no reaction under UV. Perhaps there is a strong application on the front that can be seen through the pane, and only appears to be both front and back phosphor?
Any help in methods to establish this error appreciated.


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