DEVICE FOR APPLYING DECORS AND/OR CHARACTERS ON GLASS, GLASS CERAMICS AND CERAMICS PRODUCTS

Decoys, characters and symbols are largely applied on glass, glass ceramic and ceramic products in order to achieve desired aesthetic appearances. According to prior art, this is achieved either by directly applying the products using screen-printing techniques or by indirectly applying a decal which which previously provided with the decoys or characters and symbols by screen printing or by electrophotographic copying methods. This can also be achieved directly by electrophotographic copying methods whereby the electrophotographically produced toner image is transferred to the products by pressure/heat or by using an electrostatic field generated by first and second corona. Instead of an endless loop which is used in prior art, the invention provides a dimensionally-stable transfer roll for the distortion-free electrostatic transfer of the electrostatic image pattern and a special arrangement of the corona for an improved electrostatic transfer.