Patent ID: 7845930

Claim:
A device for the production of a three-dimensional object by layer-wise solidification of a photo-polymerizable resin in a basin by means of a planar or essentially planar construction/reference plane, at which the photo-polymerizable resin, which is contained in a liquid material, is to be solidified layer-wise by electromagnetic irradiation, wherein the construction/reference plane is formed by an elastic film, characterized in that the film is fixed in a frame, and the height position of the frame with the film within the basin containing the liquid material is adjustable such that the pressure of the liquid material is capable of compensating the sagging of the film (formation of a negative meniscus), and that the lower side of the film is capable of being in contact with the material permanently during the whole construction process, wherein the device is characterized in that it further comprises a puller or a slider or a plate, which temporarily, i.e. not permanently, is horizontally insertable or horizontally movable over the upper side of the portion of the film which lies above the construction zone of the three-dimensional object, and in that the puller is designed as a roll and is disposed horizontally rollable over the upper side of the film.