Quote:
Originally Posted by vintagerookies51
I was thinking the same thing. Do you know what those bubbles are caused by? I used to have a Mantle with one on it and I've always been curious.
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They're called fisheyes, or at the shop I worked for hickeys.
They're caused by a bit of debris on the offset blanket.
Short of it-
The inked plate prints the image to a rubber sheet that prints the image to the paper. If there's a piece of something on the rubber sheet it gets dented and the result is a spot of color with a blank ring around it. If there's another color in that area the other color will show.
The debris can fall off after one sheet, or hundreds. Once it's gone the problem is too.
Usually the debris is just a bit of dust or something like that. Once in a great while it's something identifiable like a moth. I haven't found one of those on a card yet, but someday.....
Steve B