Message:

<p>[QUOTE=&quot;lettow, post: 695076, member: 6986&quot;]During one of the summers while I wasin college I worked on the presses of one of the largest printers of junk mail.&nbsp; These were 16 color web presses that had 8 stations that could hold 2 colors on each.&nbsp; </p><p><br /></p><p>The engineering on these was incredible.&nbsp; Everything was done mechanically except the printing of the addresses which was by computer.&nbsp; The folding and packaging of the pieces were all done on the presses so that at the end of the line the product was complete, addressed and sealed in the envelope without ever being touched by human hands.</p><p><br /></p><p>Each color had a separate station on the press.&nbsp; Everything that needed to be that color was printed at once.&nbsp; The paper moved on to the next station where the next color was applied.&nbsp; The full color pallet was achieved by a complex system which involved varying the depths of the &quot;plates&quot; and mixing colors by applying them over the same space.&nbsp; The plates were rubber wrapped around a cylinder with the images and text molded on them.&nbsp; These ran through the ink trays and rolled the imageson the paper.</p><p><br /></p><p>Registration of the colors was key.&nbsp; Any overlap would produce a blurred image and wrong colors.&nbsp; </p><p><br /></p><p>One of the really cool things was the press did not stop for the changing of the paper rolls.&nbsp; One roll was on top and one was on the bottom.&nbsp; The roll that was not running had a piece of tape on it.&nbsp; When the roll that was running ran low, a button was pushed that brough the rolls together at the tape which picked up the other roll.&nbsp; A blade cut the old roll so there was a splice in the printing.&nbsp; The computer that printed the personalizations &quot;knew&quot; where the splice was and would not address the material that printed along with the piece that was spliced instead printing all ##### in its place.&nbsp; That way the splice was not sent out to a customer.</p><p><br /></p><p>What does all of this have to do with theprinting of banknotes?&nbsp; It is not the way the BEP prints notes but it may be similar to the manner in which notes that are offset printed are done.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in