Patent ID: 11858204
Assignee: EOS GMBH ELECTRO OPTICAL SYSTEMS
Field: Other special machines (Mechanical engineering)
Classification: CPC B  H  G | IPC B  G  H

Claim 3:
4. A laser printing system for building a three dimensional (3D) object in layerwise fashion through additive manufacturing, comprising:
a plurality of laser modules, each of the laser modules having at least one laser array, with each laser array having a plurality of semiconductor lasers extending across the array,
the laser modules being arranged so as to extend in a first leading module elongated row and a second following module elongated row which is spaced behind the first leading module elongated row, with the first leading module elongated row and second following module elongate row spanning a width of the working plane, such that arrays of the first and second elongated rows combine to provide illumination along an entire span of the working plane, with a laser at an end of an array of a module of the second following module elongate row overlapping in its illumination with a laser at an end of an array of a respective module of the first module elongated row, resulting in operation that at least one spot in a pixel in the working plane is capable of being illuminated by the overlapping laser light sources to thereby prevent gaps in the illumination along the entire span.