A printing press (10) has at least one electric motor (14), which is arranged at a distance of less than 0.5 m from an emission source (18). At least one explosion protection wall (22) is provided, such that the thread measure (F) between the emission source (18) and the electric motor (14) is greater than 0.5 m.

A screen printing safety system is provided. The system includes a screen printing machine, and a plurality of zones in the vicinity of the screen printing machine. Each of the zones includes at least one sensor for sensing encroachment past a predetermined point. The sensors are adapted to stop operation of the screen printing machine when encroachment is sensed in at least one of the plurality of zones.

An automatic pressure heat transfer printing machine, comprising: a machine body, a drive mechanism, a heat pressing plate component, a supporting seat, and a heat dissipation mechanism; the machine body comprises: a metal bracket and a shell cover, the heat dissipation mechanism comprises: a first heat dissipation channel enclosed by a lower surrounding wall and an upper surrounding wall, the first heat dissipation channel communicates with inside of the heat pressing plate component; a second heat dissipation channel formed inside an upper shell and communicating with the first heat dissipation channel and a heat dissipation outlet; a fan arranged in the second heat dissipation channel for generating heat dissipation airflow. Since the heat pressing plate component adopts plastic shell parts, the heat accumulation effect is avoided. The heat dissipation mechanism is provided to actively dissipate heat inside the plastic shell.

A cover of a stencil printer is hingedly mounted to a frame, and movable between a closed and open positions. The cover includes an elongate opening formed therein and a movable door configured to selectively close the elongate opening. The elongate opening is sized to enable the stencil and/or a tooling tray to pass through. A controller is configured to control movement of the movable door between a closed position and an open position. A sensor assembly is proximate the elongate opening. The sensor assembly is coupled to the controller and configured to detect an object within the elongate opening when moving the movable door to the closed position. The sensor is configured to generate a signal to the controller when detecting an object within the elongate opening. The controller, upon receiving the signal from the sensor, is configured to move the movable door to the open position.