Invisible ink!

[Let'sgoflying!]

You know I love to challenge y'all with tech unusual issues, here is another one I've never run across.
I am trying to scan a document that is printed in green ink.
standard color Lexmark printer/scanner/copier/fax (which works well in every regard)
So the first result is well, blank. Figured I messed up the settings somehow. Tried it again w same result. Verified functions by scanning and copying and printing other b&w documents and it worked 100%.
Tried to copy the doc in b&w, no joy.
Tried to copy the doc in color, no joy.
Was able to snap a pic so I know I am not imagining the presence of printed word (have not had a nip tonight either, I swear).
Any way to fool the scanner into seeing the invisible ink??

 

[KennyFlys]

Try a normal photocopy to black with the contrast darkened. Then, try to scan that image.

 

[Let'sgoflying!]

Definitely better. Might be usable.
Will report back, thanks.

 

[Keith Lane]

Quite a few years ago, Xerox machines could not copy blue ink. The company I worked for used blue to make markups on copies for some reason. Even now, many customs documents cannot be accepted as original unless they are signed in blue ink for the same reason.

 

[KennyFlys]

Quite a few years ago, Xerox machines could not copy blue ink. The company I worked for used blue to make markups on copies for some reason. Even now, many customs documents cannot be accepted as original unless they are signed in blue ink for the same reason.

A certain range of blue, around a baby blue, is non-photographic. It was used in the old manual process of editing and layout for publishing because it would not show when the final product was photographed for the printing plate.

When I was in the Navy, all documents were required to be in black ink but you could always determine the originals. With today's copiers and scanners, I'm sure they can easily be duplicated. I don't know the black ink is still in use or not.

 

[Skip Miller]

A certain range of blue, around a baby blue, is non-photographic. It was used in the old manual process of editing and layout for publishing because it would not show when the final product was photographed for the printing plate.

When I was in the Navy, all documents were required to be in black ink but you could always determine the originals. With today's copiers and scanners, I'm sure they can easily be duplicated. I don't know the black ink is still in use or not.

I recently refi'd my home mortgage. All documents were required to be signed in black. I pitched a fit when they wanted me to sign two notes in black. I signed one in blue, added the notation that the original document has blue ink. They pitched a fit and threatened to halt the closing. What happens if we lose the note in the mail? I said that is your problem, use a reliable courier. I countered what happens when two notes are presented to me for payment? After much gnashing of teeth I prevailed....

-Skip

 

[Henning]

You know I love to challenge y'all with tech unusual issues, here is another one I've never run across.
I am trying to scan a document that is printed in green ink.
standard color Lexmark printer/scanner/copier/fax (which works well in every regard)
So the first result is well, blank. Figured I messed up the settings somehow. Tried it again w same result. Verified functions by scanning and copying and printing other b&w documents and it worked 100%.
Tried to copy the doc in b&w, no joy.
Tried to copy the doc in color, no joy.
Was able to snap a pic so I know I am not imagining the presence of printed word (have not had a nip tonight either, I swear).
Any way to fool the scanner into seeing the invisible ink??

No, it's programmed not to see various shades of green. It's about trying to thwart low level counterfeiters, the machines arent supposed to scan or print "money" green.

 

[Stevel]

Quite a few years ago, Xerox machines could not copy blue ink. The company I worked for used blue to make markups on copies for some reason. Even now, many customs documents cannot be accepted as original unless they are signed in blue ink for the same reason.

This was only true of the Xerox copiers that did a quick flash rather than a slow scan. Our company letterhead was in blue when we bought the flash type. OOPS!
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VOLCANO VAPORIZER