Decorating machine particularly for the decoration of ceramic products and method for realising a belt for decorating said ceramic products

A decorating machine for decoration of ceramic products, comprising:

• a closed loop belt (3) for the transfer of a decoration (9) on a receiving surface (11) of a ceramic product;
• a plurality of conveyor rollers (2) about which said closed loop belt (3) is wound and moved in rotation;
• at least one of said plurality of conveyor rollers (2) comprises a central portion (12) and two end portions (14) opposite one another, at least one of said two end portions (14) being free in rotation with respect to the other said end and central portions (12, 14);
• characterised in that each of said two end portions (14) has a variable diameter;
• said variable diameter reaching a maximum diameter (D) in a remote position with respect to a flank (18a) of each of said two end portions (14) close to the central portion (12);
• characterised in that the closed loop belt (3) comprises a central portion thin in thickness and defining respective lateral edges (19) constrained to flat cooperating belts (20) tensioned on said two end portions (14);
• interaxes of said flat cooperating belts (20) defining a distance (A) between the interaxes of flat cooperating belts shorter than a distance (B) defined between the maximum diameters (D) of said opposite two end portions (14).