An air fan assembly includes a suction box including a wall having an open area distributed across the wall. The suction box is configured to contain an underpressure on an inner side of the wall, so as to cause a cut sheet to adhere to a perforated transport belt. An impingement unit is configured to expel air supplied thereto towards the perforated transport belt. An air fan is arranged to create and maintain the underpressure in the suction box and to supply the air to be expelled by the impingement unit via an air outlet of the suction box. A first valve is arranged upstream of the air fan for conditionally admitting an additional air flow into the suction box. An inkjet printer and a method of operating the air fan assembly include the air fan assembly.

An air fan assembly includes a suction box including a wall having an open area distributed across the wall. The suction box is configured to contain an underpressure on an inner side of the wall, so as to cause a cut sheet to adhere to a perforated transport belt. An impingement unit is configured to expel air supplied thereto towards the perforated transport belt. An air fan is arranged to create and maintain the underpressure in the suction box and to supply the air to be expelled by the impingement unit via an air outlet of the suction box. A first valve is arranged upstream of the air fan for conditionally admitting an additional air flow into the suction box. An inkjet printer and a method of operating the air fan assembly include the air fan assembly.

There is disclosed a vacuum table 400 comprising a vacuum plate 402 separating a first vacuum chamber 406 from a substrate zone 60 for receiving a substrate 50. The vacuum plate has a plurality of suction holes 404 for conveying a gas flow from the substrate zone 60 to the first vacuum chamber 406. There is an evacuation port 422 in communication with a second vacuum chamber 420 to evacuate gas from the substrate zone 60 when a substrate 50 is received over the suction holes 404 of the vacuum plate 402, and a vacuum port 424 for discharging gas received in the second vacuum chamber 420 to a vacuum source 423. The first vacuum chamber 406 and the second vacuum chamber 420 are in fluid communication via a valve 430 so that gas flows from the first vacuum chamber 406 to the vacuum port 424 via the second vacuum chamber 420. The valve 430 is controllable to vary a gas flow rate through the vacuum plate 402 and thereby vary a retaining force on a substrate 50 received thereon.

There is disclosed a vacuum table 400 comprising a vacuum plate 402 separating a first vacuum chamber 406 from a substrate zone 60 for receiving a substrate 50. The vacuum plate has a plurality of suction holes 404 for conveying a gas flow from the substrate zone 60 to the first vacuum chamber 406. There is an evacuation port 422 in communication with a second vacuum chamber 420 to evacuate gas from the substrate zone 60 when a substrate 50 is received over the suction holes 404 of the vacuum plate 402, and a vacuum port 424 for discharging gas received in the second vacuum chamber 420 to a vacuum source 423. The first vacuum chamber 406 and the second vacuum chamber 420 are in fluid communication via a valve 430 so that gas flows from the first vacuum chamber 406 to the vacuum port 424 via the second vacuum chamber 420. The valve 430 is controllable to vary a gas flow rate through the vacuum plate 402 and thereby vary a retaining force on a substrate 50 received thereon.

The invention relates to a system for producing three-dimensional screen-printed articles, comprising a press bed with a printing screen, by means of which at least one printing exploit can be printed multiple times, wherein after each completed printing, the lift-off can be increased by the application thickness of the previous printing.

The invention relates to a system for producing three-dimensional screen-printed articles, comprising a press bed with a printing screen, by means of which at least one printing exploit can be printed multiple times, wherein after each completed printing, the lift-off can be increased by the application thickness of the previous printing.

The invention relates to a system for producing three-dimensional screen-printed articles, comprising a press bed with a printing screen, by means of which at least one printing exploit can be printed multiple times, wherein after each completed printing, the lift-off can be increased by the application thickness of the previous printing.

The invention relates to a system for producing three-dimensional screen-printed articles, comprising a press bed with a printing screen, by means of which at least one printing exploit can be printed multiple times, wherein after each completed printing, the lift-off can be increased by the application thickness of the previous printing.

There is disclosed a vacuum table 400 comprising a vacuum plate 402 separating a first vacuum chamber 406 from a substrate zone 60 for receiving a substrate 50. The vacuum plate has a plurality of suction holes 404 for conveying a gas flow from the substrate zone 60 to the first vacuum chamber 406. There is an evacuation port 422 in communication with a second vacuum chamber 420 to evacuate gas from the substrate zone 60 when a substrate 50 is received over the suction holes 404 of the vacuum plate 402, and a vacuum port 424 for discharging gas received in the second vacuum chamber 420 to a vacuum source 423. The first vacuum chamber 406 and the second vacuum chamber 420 are in fluid communication via a valve 430 so that gas flows from the first vacuum chamber 406 to the vacuum port 424 via the second vacuum chamber 420. The valve 430 is controllable to vary a gas flow rate through the vacuum plate 402 and thereby vary a retaining force on a substrate 50 received thereon.

There is disclosed a vacuum table 400 comprising a vacuum plate 402 separating a first vacuum chamber 406 from a substrate zone 60 for receiving a substrate 50. The vacuum plate has a plurality of suction holes 404 for conveying a gas flow from the substrate zone 60 to the first vacuum chamber 406. There is an evacuation port 422 in communication with a second vacuum chamber 420 to evacuate gas from the substrate zone 60 when a substrate 50 is received over the suction holes 404 of the vacuum plate 402, and a vacuum port 424 for discharging gas received in the second vacuum chamber 420 to a vacuum source 423. The first vacuum chamber 406 and the second vacuum chamber 420 are in fluid communication via a valve 430 so that gas flows from the first vacuum chamber 406 to the vacuum port 424 via the second vacuum chamber 420. The valve 430 is controllable to vary a gas flow rate through the vacuum plate 402 and thereby vary a retaining force on a substrate 50 received thereon.