Patent ID: 9718238
Date: 2017-08-01
CPC Classifications: B29C,B41J

Claim:
1. A printing head for a printing system, the printing system having a material supply apparatus for supplying liquid material to said printing head, the material supply apparatus comprises a plurality of separate liquid containers, the printing head comprising: a plurality of compartments, each having an outlet port for depositing the liquid on a supporting structure and an inlet port separately connectable to a separate liquid container of the material supply apparatus, wherein at least two compartments are in controllable and direct fluid communication with each other; and an arrangement of sensors configured for generating signals indicative of (i) a filling state of each compartment, and (ii) a fluid communication state between said at least two compartments; wherein said at least two compartments occupy a chamber and are separated by at least a partition, and wherein said fluid communication is via a liquid passage in said chamber.