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Encyclopedia > Carbonless copy paper

Carbonless copy paper or NCR (no carbon required) is an alternative to carbon paper. It is used to make a copy of an original, handwritten document without the use of any electronics. Carbonless copy paper was developed as a biodegradable, stain-free alternative to carbon paper. Carbonless Copy Paper - Principle File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Carbon paper (originally carbonic paper) is paper coated on one side with a layer of a loose ink or pigmented coating. ... Biodegradation is the decomposition of material by microorganisms. ...


Carbonless copy paper works in a fairly simple way. It consists of sheets of paper which are coated on the bottom and/or the top with micro-encapsulated dye or ink and/or a reactive clay. This can be easily seen in the figure to the right. Yarn drying after being dyed in the early American tradition, at Conner Prairie living history museum. ... An ink is a liquid containing various pigments and/or dyes used for colouring a surface to render an image or text. ...


The back of the first sheet is coated with micro-encapsulated dye. The top of the middle sheet is coated with a clay which reacts quickly with the dye to form a permanent mark. The back of the middle sheet is also coated with the dye. The lowermost sheet is coated on the top surface with the clay with no coating applied to the back side.


When the sheets are written on, the pressure from the point of the writing instrument causes the micro-capsules to break and spill their dye. Since the capsules are so small, the print obtained is very accurate. Printing is an industrial process for reproducing copies of texts and images, typically with ink on paper using a printing press. ...


Around fifteen pages can be copied using one sheet of carbonless copy paper.


The NCR paper was also available in a self contained verision that had both the ink & the clay on the same side of the paper.


External links

Carbonless Copy Paper Injury and Information Network


  Results from FactBites:
 
Carbonless copy paper - Wikipedia, the free encyclopedia (336 words)
Carbonless copy paper or NCR paper is an alternative to carbon paper, used to make a copy of an original, handwritten document without the use of any electronics.
It consists of sheets of paper that are coated on the bottom and/or the top with micro-encapsulated dye or ink and/or a reactive clay.
Carbonless copy paper was also available in a self-contained version that had both the ink and the clay on the same side of the paper.
  More results at FactBites »

 
 

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