THREE-DIMENSIONAL PRINTING APPARATUS

摘要

A three-dimensional printing apparatus includes a tank that stores a liquid photo-curable resin; a base on which the tank is placed and which includes a light passage portion through which light passes; an optical device that is disposed below the base, includes a light source, and irradiates the resin with light emitted from the light source through the light passage portion; and a holder provided above the tank so that when lowered, the holder is immersed in the resin, and when raised, the holder lifts the cured resin. A front-rear length of the tank is longer than a front-rear length of the holder. A front-rear center of the holder is located rearward relative to a front-rear center of the tank, and a front-rear length between a front end of the tank and a front end of the holder is equal to or longer than the front-rear length of the holder.

主权项

1. A three-dimensional printing apparatus comprising:
a tank storing a photo-curable resin in liquid form; a base on which the tank is placed, the base including a light passage portion through which light to be applied to the photo-curable resin passes; an optical device disposed below the base and including at least a light source that emits light, the optical device being arranged to irradiate the photo-curable resin inside the tank with the light emitted from the light source through the light passage portion; and a holder provided above the tank and configured to be raisable and lowerable, the holder being configured so that when lowered, the holder is immersed in the photo-curable resin inside the tank, and when raised, the holder lifts the photo-curable resin that has been cured with irradiation of the light; wherein a length of the tank in a given direction is longer than a length of the holder in the given direction; and when the given direction is defined as a front-rear direction, a center of the holder in the front-rear direction is located rearward relative to a center of the tank in the front-rear direction, and a length between a front end of the tank and a front end of the holder in the front-rear direction is equal to or longer than the length of the holder in the front-rear direction.