Peridot Print LLC

Hewlett-Packard Development Company, L.p.

Marc Casalprim Torres

Alberto Maria Canals Pou

Xavier Alonso Becerro

Alberto María Canals Pou

In an example, a method includes generating a plurality of calibration objects, each in a different region of a fabrication chamber of an additive manufacturing apparatus. In some examples the method further includes obtaining a measurement of a physical property of each calibration object. The method may include determining, by processing circuitry, calibrated print agent coverage amounts for each region based on the measured physical properties of the calibration objects wherein the calibrated print agent coverage amounts are to be used in a subsequent object generation operation.

Print agent coverage amounts

In some examples, a system applies a first adjustment factor to a first representation of a first lattice structure of a first three-dimensional (3D) part to generate a first adjusted representation of the first lattice structure, the first representation comprising a representation of beams of the first lattice structure without a thickness. The system applies a second adjustment factor to a second representation of a second lattice structure of a second 3D part to generate a second adjusted representation of the second lattice structure, the second representation comprising a representation of beams of the second lattice structure without a thickness. The system adds beam thicknesses to the first and second adjusted representation to provide respective digital models of the first and second 3D parts that are useable by an additive manufacturing machine in building the first and second 3D parts in respective build regions of a build bed.

Adjustments of lattice structures of 3D parts

Calibration data is obtained relating to a printed thickness of an elongate member as a function of position within a container for containing a print medium in an additive manufacturing printer. An object model is obtained representing an object to be printed, the object having elongate members. A position of the object to be printed within the container is determined and respective positions within the container for the elongate members of the object are determined from the determined position of the object. The obtained object model of the object is changed to an amended object model in which the elongate members have respective thicknesses based on the determined respective positions within the container for the elongate members and the calibration data.

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Sant Cugat del Valles, Spain

Marc Casalprim Torres