Determining distribution patterns for object portions

Patent metadata

Field	Value
Publication number	US-11279091-B2
Application number	US-201716075706-A
Country	US
Kind code	B2
Filing date	Jul 10, 2017
Priority date	Jul 10, 2017
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

In an example, a method includes forming a layer of build material, processing a first portion of the build material by distributing a print agent using a first distribution pattern, the first distribution pattern having a first print agent dispersion characteristic and processing a second portion of the build material by distributing a print agent using a second distribution pattern, the second distribution pattern having a second print agent dispersion characteristic. The method may further include heating the build material by exposing the layer of build material to radiation so as to cause fusing of the first and second portion.

First claim

The invention claimed is:

1. An apparatus comprising:
a processing circuitry; and
a memory storing instructions that when executed cause the processing circuitry to:
determine a print agent distribution pattern having a print agent dispersion characteristic for a print agent to be distributed onto a region of a build material layer for building an object portion of an object, the print agent distribution pattern being determined based on a distance of the object portion from a surface of the object; and
distribute the print agent onto the region of the build material layer according to the print agent distribution pattern.

2. An apparatus according to claim 1 , wherein the instructions are executable to cause the processing circuitry to determine the print agent distribution pattern further based on a size of an object feature comprising the object portion.

3. An apparatus according to claim 1 , wherein the instructions are executable to cause the processing circuitry to determine the print agent distribution pattern further based a color associated with the object portion.

4. An apparatus according to claim 1 , wherein the instructions are executable to cause the processing circuitry to determine the print agent distribution pattern by selecting a print agent dispersion characteristic comprising at least one of:
a cluster element diameter of the print agent distribution pattern,
a cluster size and separation of the print agent distribution pattern, and
a density of the print agent distribution pattern.

5. An apparatus according to claim 1 , wherein the instructions are executable to cause the processing circuitry to determine a plurality of agent application distribution patterns having different print agent dispersion characteristics for the build material layer.

6. An apparatus according to claim 1 , wherein the instructions are executable to cause the processing circuitry to segment a data model of the object into a plurality of object portions based on at least one of a size of an object feature comprising the object portions and an object property associated with the object portions, and determine a specific print agent distribution pattern for each of the object portions.

7. An apparatus according to claim 1 , wherein the instructions are executable to cause the processing circuitry to generate control instructions for generating the object using the print agent distribution pattern for the object portion.

8. An apparatus according to claim 7 , wherein the instructions are executable to cause the processing circuitry to generate the object according to the control instructions.

Assignees

• Hewlett Packard Development Co

Inventors

• Lebron Hector
• Wright Jake
• Schramm Morgan T
• Shepherd Matthew A

Classifications

• B22F10/30

  Process control · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B22F10/14

  by jetting of binder onto a bed of metal powder · CPC title

• B29C64/393 Primary

  for controlling or regulating additive manufacturing processes · CPC title

• B29C64/153 Primary

  using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title