Quote:
Originally Posted by saucywombat
Having contemplated this issue in depth and given that a lot of information is buried under the sheer size and volume of the PSA Forum thread, I have copied a 2017 post I made there regarding the source of the error in the printing process.
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I'm still confused by the digression into gravure printing. I agree that the cause of the error was an improperly exposed/damaged plate. As we have mentioned in the past, that is the only way the NNOF was reproduced 500-1000X and all copies are virtually identical. However, the Topps employee I spoke to told me they used offset lithography printing - ie a printing plate created from a mask of negatives (I'm following Steve's theory here that an obstruction - tape, etc- in the platemaking process prevented the black plate from being properly exposed). In gravure a cylinder is engraved with cells which carry ink - seems a lot different than offset lithography. Also, it says gravure prints hexagons, while offset lithography gives the dot design - an example of which can be found on the very distinct 1990 Topps colored borders.