The surface of the paper is coated with a solid-state mixture of dye and a suitable matrix; a combination of a fluoranleuco dye for example. When the matrix is heated above its melting point, the dye reacts with the acid, shifts to its colored form, and the changed form is then conserved in a metastable state when the matrix solidifies back quickly enough.
Usually, the coating will turn black when heated, but coatings that turn blue or red are sometimes used. While an open heat source, such as a flame, can discolor the paper, a fingernail swiped quickly across the paper will also generate enough heat from friction to produce a mark.

Application:

Thermal paper is widely used in supermarkets, shopping malls, restaurants, coffee shops, hospitals, banks, office buildings. It has great demand all over the world every day. More than ten slitting and printing machines help us deliver cargo at earliest time.

Specification:

Basic weight: 42g, 45g, 48g, 50g, 52g, 55g, 58g, 60g, 62g, 65g, 70g, 80g, etc
Image: blue and black
Size: width: 405mm, 565mm, 636mm, 790mm, 795mm, 1035mm etc. Jumbo roll or small roll; customized by clients
Core Size: plastic core / carboard core, 3”/75mm/3inch
Material: 100% virgin wood pulp
Production time: 30-50 days
Shelf life and storage: The shelf life of products stored under normal storage conditions is at least two years. The image can last 5 years.

Product Features:

1. Unrivaled capability to maximize printer performance.
2. Jam-free operation
3. End-of-roll indicator
4. Legible thermal image, smooth touch.