Large printers have several paper trays. This is used by some offices to re-use paper already printed on one side. The problem comes when you aren't sure what side of the resulting print you should be reading.
The Green Recycle Stamp automatically stamps the pre-printed side with a big green "Recycled" stamp, ending this confusion.-- Worldgineer, Jan 29 2008 Sounds reasonable and efficient to me. You could simplify it further by just having an inky wheel that marked the reverse of the page as it left the tray.-- MaxwellBuchanan, Jan 29 2008 Good idea(+), but how does it know when you are recycling and when you are using preprinted paper?-- MisterQED, Jan 29 2008 The recycled paper goes in a different feeder tray. The stamp (or the inky printy wheel) would only mark pages as they left that tray.-- MaxwellBuchanan, Jan 29 2008 hey, where u been? World - honey! ;)-- po, Jan 29 2008 Who me?-- MaxwellBuchanan, Jan 29 2008 no.-- po, Jan 29 2008 Ah. Just as well, as I can seldom give a definitive answer regarding my recent whereabouts.-- MaxwellBuchanan, Jan 29 2008 in a gutter, no doubt.-- po, Jan 29 2008 Almost certainly. Very little point in denying it, at any rate. I've found from bitter experience that denying things leads to immediate suspicion, whereas a stout and cheery confirmation sows a seed of doubt in the mind of the interlocutor.
I may have to review this policy when they release me.-- MaxwellBuchanan, Jan 29 2008 me too! :)-- po, Jan 29 2008 If you get out first, tell Mickey the Fish that Jonny Two-Legs has his spatula, and that Ricey Bob had nothing to do with that business involving Nicholas the Florist.-- MaxwellBuchanan, Jan 29 2008 This is OK, if you don’t leave it up to the guy who always puts the paper in upside-down, you end up with Recycled Stamps on both sides, and you have to cross out the bad stamp, and you cross out the wrong one by mistake, and no matter how much I apologize, everyone’s still mad.-- Amos Kito, Jan 30 2008 I'll buy that. Green it is.
[po] I'm here. Just not very often (damn real world keeps getting in the way).-- Worldgineer, Jan 30 2008 ...stamping all that paper "Recycled".-- DrCurry, Jan 30 2008 Red ink costs over seven times as much to produce as green ink, and its production has a much larger environmental footprint.-- MaxwellBuchanan, Jan 30 2008 Not so popular with the shareholders, either....-- DrCurry, Jan 30 2008 Most printer manufacturers recommend you not run already-printed-upon paper through the fuser again.
I always felt it was the printer manufs. in big-paper's pockets.-- ericscottf, Jan 30 2008 It might be easiest to rig one of those letter-sprayers to the machine and just write "recycled" in green ink, instead of using a stamp. The sprayers put lettering on cables--I'll see if I can find a link.-- baconbrain, Jan 30 2008 What's wrong with just an inky wheel at the point where the paper passes out of the tray?-- MaxwellBuchanan, Jan 30 2008 If you'd paid more attention to Billy Ocean when you were young you wouldn't have made that mistake.-- hippo, Jan 31 2008 random, halfbakery