Carbonless copy paper is used in many applications, ranging from invoices, contract forms, multi-part business forms and credit card transactions.

A carbonless copy paper multi-part set comprises three types of paper:

• CB (Coated Back) The paper is coated on its back with a micro-encapsulated solution of color formers in an oil.
• CFB (Coated Front and Back) The paper is coated on its front with a color developer and on its back with a micro-encapsulated solution of color formers in an oil.
• CF (Coated Front) The paper is coated on its front with a color developer

When pressure is applied on the top (CB) sheet by a pen, typewriter or impact printer, the capsules coated on the underside rupture and the color former solution is transferred to the lower (CFB sheet). Upon contact with the CFB sheet, the color former solution reacts with the color developer to generate an image. In a similar way, the capsules on the underside of the CFB sheet rupture and form an image on the bottom (CF) sheet.

                               Carbonless Paper Technology

Products for Carbonless Paper Applications

Ciba® PERGASCRIPT® Black I-R
Main component for black formulations, shading component for blue formulations. Typically develops a neutral to reddish-black shade on clay and zinc salicylate CF and a neutral to greenish-black shade on phenolic resin CF.

Ciba® PERGASCRIPT® Black I-2R
Main component for black formulations, shading component for blue formulations. Typically develops a neutral to greenish-black shade on phenolic resin and zinc salicylate CF and a neutral to slightly bluish-black shade on clay CF.

Ciba® PERGASCRIPT® Blue I-2RN
Main component for blue formulations, shading component for black formulations. Typically develops an intense neutral or slightly reddish-blue image on all CF types.

Ciba® PERGASCRIPT® Blue S-RB P
Slow-developing subsidiary component for black or blue formulations for use on clay CF. Fully developed image has excellent light fastness on clay CF. In general, not recommended for use on organic CF types.

Ciba® PERGASCRIPT® Red I-6B
Shading component for black or blue formulations. Typically develops a pronounced bluish-red shade with good light fastness on all CF types.

Ciba® PERGASCRIPT® Orange I-G
Shading component for black formulations. Typically develops a reddish-orange shade on all CF types.

Ciba® PERGASCRIPT® Green I-2GN
Shading component for black formulations. Typically develops a neutral green shade on all CF types.