The process for making a heat-sensitive stencil sheet using a heat-sensitive plate making equipment and thermal plate making equipment

摘要

PURPOSE:To obtain a faithful printing image and to reduce a set-off phenomenon by making the sub-scanning length of each heating element provided to a thermal head shorter than the dot pitch in a main scanning direction. CONSTITUTION:The length in a sub-scanning direction of the heating element 5 constituting a thermal head 4 is made shorter than the dot pitch in a main scanning direction. Therefore, the openings in the sub-scanning direction become independent each other without being made continuous. Since the length in the sub-scanning direction of the heating element 5 becomes short, the energy per a unit area applied to a film is suppressed and, even between the dots generating heat at the same time in the main scanning direction, the openings of the film can be stopped in the intermediate gaps and the openings in the main scanning direction are not also continued. Therefore, an ink transfer amount is suppressed and a set-off phenomenon can be prevented and the white image parts formed in the gaps between respective dots are naturally connected by the penetration effect of ink and a printing image is not made thick to form a faithful character image.