EMBOSSING AS AN OPTION
The ergonomy and practicability of the keyboard can be additionaly perfected by selective embossing of keyboard's graphic foil's active surfaces – keys. By so doing the keys become more attainable and the switching feeling better. It also enhances the attractiveness and appearance of the entire application. The shape of the embossed areas is arbitrary.
The foil overlay as a product retains all the possibilities considering the integration of transparent surfaces of different quality. Selective adjustment of graphic foil's certain surfaces makes possible for the use of LCD and LED displayes. A perfect clearness and transparency of the keyboard can be achieved if needed as well as only semi - transparency in various colour shades.
An insertion of information stripe pockets is an option. The pocket can be formed between a graphic foil and the carrier or within a foil overlay with an additional foil level.
MATERIALS FOR MAKING A GRAPHIC FOIL
When making a graphic foil or a membrane keyboard polycarbonate and polyester foils can be used as a basic substratum for the realization of the graphic part. An appropriate superficial foil treatment enables the resistance of a graphic foil against the superficial wearing out and it's chemical resistance. The upper surface of a graphic foil is clear or semi-transparent.