Carbonless paper, also known as NCR (No Carbon Required) paper,
uses a chemical reaction to create duplicates through the pressure
of a pen or impact printer.
Functional Sheet Types
The system relies on three specific coatings that must be stacked
in order:
* CB (Coated Back): The Top Sheet. The back is coated with
micro-encapsulated dye.
* CFB (Coated Front and Back): The Middle Sheet(s). The front
receives the image, and the back transfers it down.
* CF (Coated Front): The Bottom Sheet. The front is coated with
reactive resin to "fix" the dye into a visible image.
Physical Specifications
* Basis Weights:
* Standard: *5 lb to *1 lb (approx. ***0 gsm).
* Tag/Cardstock: Heavier *0 lb to **0 lb (approx.
*****0 gsm) used for the final CF sheet in durable forms.
* Standard Dimensions:
* Cut Sheets: 8.5" x *1" (Letter), 8.5" x *4" (Legal), and *1" x
*7" (Tabloid).
* Rolls: Standard widths of 2.*5", 3", and 3.*5" for
point-of-sale (POS) receipts.
* Large Format: *3" x *5" or *2.5" x *4.5" for offset
press printing.
* Standard Color Sequence:
* *-Part: White / Canary.
* *-Part: White / Canary / Pink.
* *-Part: White / Canary / Pink / Goldenrod.
Technical Properties
* Image Color: Available in Black (standard) or Blue (often used
for original signatures).
* Printer Compatibility:
* Impact: Designed for dot-matrix or typewriter use.
* Digital: Specifically treated "Digital NCR" is
required for laser/LED printers to withstand fuser heat without
damaging the capsules.
* Shelf Life: Unused paper typically lasts 2 years if stored in
original packaging; images on signed forms remain legible for *0+
years
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