Braille text production method in which a chemical varnish with polymer compounds and additives is subjected to localized heating with a laser beam in order to cause a noticeable volume increase

摘要

Braille text is produced on a chemical varnish that optimally comprises polymer compounds with additives which, when subjected to localized warming, undergoes a noticeable volume increase due to one or more chemical reactions. Localized warming of the varnish is achieved using a suitable modulated laser.