Device and method for mass decoration of ceramic products

A decoration device for mass decoration of ceramic products, comprising:

• a support surface (2);
• a distributor (21), configured to deposit a layer (L) of granular material or powder material on the support surface (2);
• a pressing device (P), configured to press the layer (L);
• characterised in that it comprises:
• a dispensing device (4), configured to apply, on the support surface (2) and/or on the layer (L), a decorative layer (3) of granular material or powder material;
• an accumulation belt (T1), contiguous and aligned to the support surface (2), which is located at a lower height than the support surface (2), wherein the support surface (2) and the accumulation belt (T1) are positioned upstream of the pressing device and provided with independent motor means and move with different advancement speeds;
• a control module for the dispensing device (4), provided with a processing algorithm configured to modify an initial longitudinal extension of the decorative layer (3) with respect to a predicted final longitudinal extension according to a difference in the advancement speeds between the support surface (2) and the accumulation belt (T1) upstream of the pressing device.