Patent ID: 9193112
Filing Date: 2015-11-24
Classification: B29C

Abstract:
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; 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; a tilting device configured to tilt the tank so that a front portion of a bottom surface of the tank is disposed higher than a rear portion of the bottom surface of the tank; and a case that supports the base, the optical device, and the holder; wherein a length of the tank in a given direction is longer than a length of the holder in the given direction; 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; and the tilting device is configured to tilt the case, the tank, the base, the optical device, and the holder.