Technical information

The different layers of thermal paper

Our thermal papers consist of a base paper or film coated with 4 layers (3 on the front and 1 on the back) to give it its heat-sensitive and protective properties: first an insulating layer (primer), then the heat-sensitive layer (thermal layer). Then come the 2 protective layers on each of the 2 sides (front and rear protection). 

TOP COAT

This layer ensures effective conservation of the thermal image against various types of aggression such as alcohol, oil, water...
It also ensures good compatibility with the printer and protects its thermal head.

THERMAL COAT

This layer is used to determine the following aspects:
- sensitivity
- image density
- image protection
-background density

UNDER COAT

This layer allows the heat generated by the thermal head to concentrate in the thermal layer, optimizing the thermosensitive reaction by determining the following properties:
- sensitivity
- brightness
- image density 

BASE SUPPORT

The base substrate is made up of paper or film of different thicknesses. It gives the thermal paper/film the following properties:

- Characterizes the thickness and basis weight of the substrate.

- Confers mechanical properties (tensile strength, tear strength, rigidity).

- Determines the uniformity of the thermal image.

BACK COATING

This coating provides outstanding protection against various types of aggression, such as alcohol, oil, plasticizers...
It also prevents the paper from curling and allows the use of solvents, inks and adhesives.

REACH, ISO 9001, ISO 14001, ISO 50001: all our certificates are available on request (thermal.info(at)ricoh-industrie.fr).

Thermal paper is a relatively fragile medium, so certain precautions should be taken to avoid premature deterioration during storage, processing or use. 

Storage precautions

Before unpacking
RICOH thermal paper can be kept for a long time after manufacture if stored in the dark at a temperature not exceeding 35°C and a relative humidity not exceeding 85%.

After unpacking
In addition to the above precautions, avoid prolonged exposure to direct sunlight or strong fluorescent light, which may cause discoloration of the paper.

Keep RICOH thermal paper away from sources of heat.

Processing precautions

Adhesive precautions

RICOH generally recommends the use of acrylic glue as an adhesive. However, if you use a solvent-based glue, take the precaution of carrying out a preliminary adhesion test to ensure that the glue is compatible with the thermal paper.

Pre-printing precautions

The surface of RICOH thermal papers has been specially treated for pre-printing. The most suitable inks are offset and flexographic inks. We recommend, however, that you carry out a preliminary test with the ink of your choice, in order to ensure that the ink is suitable for pre-printing.