Silk screen printing on crystal/glass and transparencies of every sort, in a four-colour process, which makes translucent or transparent the printed image

摘要

This system allows a four - colour printing on transparencies, that makes translucent or transparent the picture. The difficulties of such a printing are mainly three:1) the use of mixtures (in well defined percentages) of the inks.2) the drying process of the inks.3) the removal of the fine dust from the support during the various phases of the working.Solution for point 1: exact mixture of special inks.Solution for point 2: right exposure in terms of time and electromagnetic frequency.Solution for point 3: a) system with electromagnetic conduction; b) clean chamber; c) electrization of the materials in touch with the support; d) system of controlled suction; e) system obtained from incubators.