TRANSPARENT WINDOW HAVING SUPERHYDROPHOBIC OR SUPEROLEOPHOBIC PROPERTY FOR 3D PRINTER AND 3D PRINTER HAVING SAME

摘要

A 3D printer according to an embodiment is configured to project light to photocurable resin contained in a resin bath such that the same is partially cured, thereby generating a three-dimensional output material. The light is projected to the photocurable resin through a transparent window provided on a part of the resin bath, and the transparent window is configured to have a superhydrophobic or superoleophobic property such that the same can be easily separated from the output material. Such a configuration can easily implement final separation between the transparent window of the resin bath and the three-dimensional output material without forming a so-called dead zone in which oxygen interferes with photocuring such that uncured resin forms a layer despite emitted light. In addition, the output material can be easily separated by using the superhydrophobic or superoleophobic property without any separate process of tilting, sliding, or the like; there is no requirement regarding the thickness of the resin bath, making it unnecessary to fabricate an excessively thin one; and the printing thickness can be made uniform since no dead zone is necessary.