Anti-photocopier
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- lleknird
My client has asked me to produce a document which can not be easily photocopied. There are some anti photocopy paper stocks out there but they are expensive.
Does anybody have any suggestions? e.g patterns, metallic inks or textured stocks which make text hard to read when photocopied.
- ian0
Do it all in a 10% gray?
Including a tint in the background.
- attentionspan0
- is that the kid from adventures in babysitting?prophetone
- ESKEMA0
something with very low contrast
- BaskerviIle0
Fluorescent ink doesn't photocopy, that's one of its features. So when you highlight something with a highlighter is doesn't show up in the copies.
Aside from that, photocopying (b&w) work with contrast, so keep everything low contrast.not sure what effect colour photocopying will have on all this
- scarabin0
do it in light blue. isn't that the old architect's trick? light blue doesn't copy in a b/w copier...
unless it's a color copier
- architects and animators.ian
- http://en.wikipedia.…MikeColdFusion
- lleknird0
thanks for your input! most helpful
- adumbratesly0
Confidential information is printed, typed or otherwise applied to paper with a color having a reflection spectral response or less than about 10% for light with a wave-length below about 600 millimicrons. The color is sufficiently contrasting with the information to enable the information to be read by the human eye when the document is viewed under white light, but the document cannot be successfully photocopied.
http://www.freepatentsonline.com…
Check the date...
- i_monk0
I remember videogames used to come with black-on-dark-purple code wheels for copyright verification. They were supposed to be impossible to photocopy but weren't.
Any photocopier with exposure/contrast control will make short work of any contrast-based scheme you come up with.
- vaxorcist0
I once had a manual for some odd expensive software that was printed in red ink, as an attempt to prevent it from being photocopied, but we figured out we could put a cyan gel from a photo shoot in between the glass and the paper on the photocopier and it worked enough to somewhat read the damn copy.....
but of course, anyone with a digital camera and some time ... whatever...
- fresnobob0
Dude, no one uses photocopiers any more when you get a free printer with scanner every time you buy a new computer...
- monospaced0
Red turns out black on photocopiers. Print black on red.
- arne0
the red-turns-black and light-blue-dissappears tricks applie to classic photocopiers. but sadly those brilliant machines almost ceased to exist.
- meffid0
Who even owns a photocopier these days?
You'll find if you can't photocopy it, you will scan it with ease.
- mikotondria30
Ask them if they want to pay just a little extra so you can produce it in a way that will stop fax piracy. Or prevente the darnyed skrybes from redactyng a kopyy on theyr partchmyntes.
- Miguex0
for all of those who don't know what a photocopier was, check the video below:
- holy crap.. so weird.....prophetone
- So odd. I wonder of anyone copied their junk with those.monospaced