A three dimensional printing apparatus including a carrying plate, a transparent plate, an elastic film, and a bump is provided. The transparent plate is disposed on the carrying plate. The elastic film is disposed on the transparent plate. The bump is disposed between the elastic film and the carrying plate. An interface between the transparent plate and the elastic film is in communication with an external space through a fluid channel between each bump and the elastic film. An orthographic projection area of the bump on the transparent plate is not more than ¼ of a surface area of the transparent plate.

A three dimensional printing apparatus including a carrying plate, a transparent plate, an elastic film, and a bump is provided. The transparent plate is disposed on the carrying plate. The elastic film is disposed on the transparent plate. The bump is disposed between the elastic film and the carrying plate. An interface between the transparent plate and the elastic film is in communication with an external space through a fluid channel between each bump and the elastic film. An orthographic projection area of the bump on the transparent plate is not more than ¼ of a surface area of the transparent plate.

A method for manufacturing an object, in particular an orthodontic appliance, by a 3D-printing device comprising a supply device for provision of a non-solidified material and means for illumination to solidify a layer of non-solidified material provided by the supply device at least zonally to fabricate the object, characterized by the following steps: a virtual model of the object to be printed is provided for the 3D-printing device, the supply device provides a layer of the non-solidified material, the means for illumination solidify the layer at least zonally, whereby the means for illumination comprises illumination pixels arranged in a grid, preferably with a dimension (between 10 μm and 80 μm, particularly preferred between 30 μm and 50 μm, wherein at least one dimension of the object represented by the virtual model is chosen to be aligned with the dimension of the illumination pixels.

A method for manufacturing an object, in particular an orthodontic appliance, by a 3D-printing device comprising a supply device for provision of a non-solidified material and means for illumination to solidify a layer of non-solidified material provided by the supply device at least zonally to fabricate the object, characterized by the following steps: a virtual model of the object to be printed is provided for the 3D-printing device, the supply device provides a layer of the non-solidified material, the means for illumination solidify the layer at least zonally, whereby the means for illumination comprises illumination pixels arranged in a grid, preferably with a dimension (between 10 μm and 80 μm, particularly preferred between 30 μm and 50 μm, wherein at least one dimension of the object represented by the virtual model is chosen to be aligned with the dimension of the illumination pixels.

A 3D printing apparatus including a tank, a print platform, a motor, a force sensor, and a controller is provided. The tank is configured to accommodate a photocurable resin. The print platform is arranged adjacent to the tank. The motor is mechanically connected to the print platform. The motor is configured to drive the print platform to move. The force sensor includes a position encoder. The controller is electrically connected to the force sensor and the motor. The controller is configured to confirm whether the print platform is configured to reach a target position through a value of the position encoder.

A 3D printing apparatus including a tank, a print platform, a motor, a force sensor, and a controller is provided. The tank is configured to accommodate a photocurable resin. The print platform is arranged adjacent to the tank. The motor is mechanically connected to the print platform. The motor is configured to drive the print platform to move. The force sensor includes a position encoder. The controller is electrically connected to the force sensor and the motor. The controller is configured to confirm whether the print platform is configured to reach a target position through a value of the position encoder.

A 3D printing machine includes a first spinning part moving in directions of three axes, i.e., X-, Y-, and Z-axes, to melt and spin a base material; and a second spinning part moving along a moving direction of the first spinning part to spin reinforcing fiber onto an upper surface of the spun base material, and moving clockwise or counterclockwise so that the reinforcing fiber is spun onto the upper surface of the base material at a moment when the first spinning part changes a moving direction thereof to the X- or Y-axis direction.

A 3D printing machine includes a first spinning part moving in directions of three axes, i.e., X-, Y-, and Z-axes, to melt and spin a base material; and a second spinning part moving along a moving direction of the first spinning part to spin reinforcing fiber onto an upper surface of the spun base material, and moving clockwise or counterclockwise so that the reinforcing fiber is spun onto the upper surface of the base material at a moment when the first spinning part changes a moving direction thereof to the X- or Y-axis direction.

Examples relate to a print station of a three-dimensional (“3D”) printing apparatus, and method of 3D printing, the print station including a substrate configured to hold a printed object, the substrate having a longitudinal axis, and a print system over the substrate, the print system including a powder distribution device including a blade-shaped end, and a powder uniformization device located at a distance from the powder distribution device along a direction parallel to the longitudinal axis.

Examples relate to a print station of a three-dimensional (“3D”) printing apparatus, and method of 3D printing, the print station including a substrate configured to hold a printed object, the substrate having a longitudinal axis, and a print system over the substrate, the print system including a powder distribution device including a blade-shaped end, and a powder uniformization device located at a distance from the powder distribution device along a direction parallel to the longitudinal axis.