Recirculation system for ink or other material in a printing apparatus, in particular inkjet, and apparatus comprising said recirculation system

A system of recirculation of a printing head for ink or other material fed to the printing head, the printing head being of inkjet type, the system of recirculation comprising:

• at least one recirculation container with an outlet and an inlet connected respectively to an inlet and an outlet of printing head, the at least one recirculation container being translatable along a predefined printing stroke together with the printing head,
• wherein the at least one recirculation container comprises at least one containment chamber for the ink or other material and at least one thermal exchange chamber for thermal energy from a heating fluid supplied by the at least one thermal exchange chamber with the ink or other material, the at least one thermal exchange chamber being in thermal contact with the at least one recirculation container,
• wherein the system of recirculation and/or the printing head are provided in combination with a control unit of one or more control elements and/or one or more sensors comprising one or more electronic components mounted on one or more electronic boards, and
• wherein the at least one thermal exchange chamber coupled to the at least one recirculation container is connected to a delivery duct and a return duct to a heat exchanger for cooling the one or more electronic components mounted on the one or more electronic boards, the heat exchanger being in thermal contact with one or more of the one or more electronic boards, optionally also of those present in a printing apparatus comprising a combination of printing head and the system of recirculation.