Naked Science Forum

General Science => General Science => Topic started by: Simulated on 20/06/2008 16:00:57

Title: How does carbon paper work?
Post by: Simulated on 20/06/2008 16:00:57: (https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fi155.photobucket.com%2Falbums%2Fs319%2FKraneDiggity%2FTNS%2FPICT3107.jpg&hash=e8aeec2086e99fd8e1bde7d9826a0fa6)

See that image? Of coursee you do, unless you are Dan at work, but anyways

How does that paper work?

Thanks Sim [:)]
Title: Re: How does carbon paper work?
Post by: Karen W. on 20/06/2008 16:17:53: You mean carbon copies like that?
Title: Re: How does carbon paper work?
Post by: Simulated on 20/06/2008 16:18:29: Carbon, how? ha
Title: Re: How does carbon paper work?
Post by: BenV on 20/06/2008 16:22:21: I would call that 'Triplicate Paper' as it gives you three for each one you write! The clue is in Karen's answer - its called a 'carbon copy' because there's a thin layer of carbon on the back of each white & yellow sheet (at least traditionally). This means that as you press down with your pen on the top sheet, the pressure causes the carbon to come off the back of the white, and on to the pink...
Title: Re: How does carbon paper work?
Post by: Simulated on 20/06/2008 16:23:20: Ohhhh Thanks
Title: Re: How does carbon paper work?
Post by: LeeE on 20/06/2008 16:53:29: Also see http://en.wikipedia.org/wiki/Carbonless_copy_paper (http://en.wikipedia.org/wiki/Carbonless_copy_paper)
Title: Re: How does carbon paper work?
Post by: BenV on 20/06/2008 16:56:47: Quote from: LeeE on 20/06/2008 16:53:29
Also see http://en.wikipedia.org/wiki/Carbonless_copy_paper (http://en.wikipedia.org/wiki/Carbonless_copy_paper)
I thought it may have moved on from the traditional carbon, thanks LeeE!
Title: Re: How does carbon paper work?
Post by: lyner on 20/06/2008 19:21:56: They use NCR (No Carbon Required) paper.
You don't get dirty fingers from the back of this paper any more. The lower layers are made black by the pressure from the top and the construction of the two toughing faces.
Title: Re: How does carbon paper work?
Post by: SquarishTriangle on 21/06/2008 03:42:45: Oooh. Does that go for fax paper too?
Title: Re: How does carbon paper work?
Post by: LeeE on 21/06/2008 17:07:34: Fax paper is heat sensitive - applying heat to it changes it's colour. Modern fax machines are likely to be ink-jet or laser though.