| 主权项 |
1. A platform for supporting a substrate on which a three-dimensional object is formed by at least one printhead comprising:
a first planar member having first and second ends; a second planar member having first and second ends, the second planar member being positioned parallel to the first planar member with the first ends of the first and second planar members being opposite one another and the second ends of the first and second planar members being opposite one another; at least two screws, a first screw being mounted between the first ends of the first and second planar members and a second screw being mounted between the second ends of the second ends of the first and second planar members, the at least two screws being configured to enable rotation of the first screw to move vertically the first ends of the first and second planar members with reference to each other and to enable rotation of the second screw to move vertically the second ends of the first and second planar members with reference to each other; a rotating member mounted to the second planar member and being operatively connected to the at least two screws to turn the screws; a drive wheel mounted to the second planar member and being operatively connected to the rotating member, the drive wheel being configured to rotate the rotating member a predetermined distance to turn the screws; and an elongated member extending from the drive wheel to enable the drive wheel to be turned and rotate the rotating member the predetermined distance. |
