DEVELOPMENT OF A THERMAL PAPER PRODUCED ON A VERY SMOOTH PAPER

摘要

The invention relates to a thermal paper intended for the formation of images in thermal printing devices and to the production method therefor, in which a very smooth paper is used as a base or substrate. The thermal paper of the invention is cheaper and provides a totally acceptable performance. The non-precoated very smooth base paper has a very smooth surface finish improved in relation to non-precoated papers, which has hitherto not been used industrially for this purpose since attempts to use prior art methods together with the specific characteristics of non-precoated paper gave rise to a low-quality product. Consequently, prior to the invention, it was necessary to use base papers having a pre-coating layer, the preparation of which involved elevated production costs owing to the characteristics of the end product, such as improved grammage (weight per square metre) and improved calliper.