Additive manufactured resistivity

Patent metadata

Field	Value
Publication number	US-11465360-B2
Application number	US-201816607536-A
Country	US
Kind code	B2
Filing date	Apr 30, 2018
Priority date	Apr 30, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

Some examples include an additive manufacturing build object including an electrical component and a build object body. The electrical component having a varying electrical resistivity within a resistivity range of 109 ohms per square to 105 ohms per square, the resistivity range obtained by an application and fusing of a fusing component of a printing agent and build material, the printing agent applied to the build material at a predetermined saturation dosage range corresponding to the resistivity range. The build object body having a second electrical resistivity obtained by an application and fusing of the fusing component of the printing agent and the build material, the printing agent applied at a dosage below the predetermined saturation dosage range, the build object body being electrically non-conductive.

First claim

The invention claimed is:

1. An additive manufacturing method comprising:
receiving data related to a three dimensional build object, the data including three-dimensional build object model data and electronic resistivity data;
modifying the received data to generate print data, comprising:
defining print data to print a first portion of a printing agent onto a build material layer in a pattern of an object layer of the build object, the first portion deposited at a first saturation level, the first saturation level being less than a predetermined level for electrical conductivity; and
defining print data to print a second portion of the printing agent onto the build material layer in a select pattern of an electrical circuitry component of the build object, the printing agent at the select pattern deposited at a second saturation level, the second saturation level being at or above the predetermined level for electrical conductivity;

controlling a printhead to dispense the printing agent onto the build material layer based on the generated print data; and
applying fusing energy to form the object layer including the electrical circuitry component, the electrical circuitry component having a resistivity between 10 9 ohms per square to 10 5 ohms per square.

2. The method of claim 1 , wherein defining the print data to cause the printhead to print the second portion of the printing agent at the second saturation level includes varying the second saturation level within a range at or above the predetermined level for electrical conductivity to form the electrical circuitry component including at least two resistivity levels, each of the at least two resistivity levels being between 10 9 ohms per square to 10 5 ohms per square.

3. The method of claim 1 , wherein controlling the printhead to dispense the printing agent includes depositing the first portion and the second portion in a plurality of passes of a printing agent applicator.

4. The method of claim 1 , wherein defining the print data to print the second portion of the printing agent includes defining the second portion of the printing agent to form a first resistivity at a first area of the select pattern and a second resistivity at a second area of the select pattern, the first resistivity greater than the second resistivity.

5. The method of claim 1 , wherein controlling the printhead to dispense the printing agent includes depositing the first portion and the second portion from the same printhead.

6. An additive manufacturing system comprising:
a controller, the controller being configured to:
generate print data from received data related to a three-dimensional build object, the received data including three-dimensional object model data and electronic resistivity data, the generated print data comprising:
defined print data to print a first portion of a printing agent onto a build material layer in a pattern of an object layer of the build object, the printing agent being electrically conductive at a predetermined saturation level, the first portion defined at a first saturation level below the predetermined saturation level;
defined print data to print a second portion of the printing agent onto the build material layer in a select area, the second portion defined at a second saturation level being at least at the predetermined saturation level; and

control a build material supply device to deposit build material onto a build surface to form the build material layer;
control a printhead to deposit the printing agent onto the build material layer based on the generated print data; and
control an energy source to apply fusing energy to form the object layer, the object layer of the build object including electrical component formed at the select area, the electrical component having a resistivity based on the defined print data, the electrical component having a varying resistivity between 10 9 ohms per square to 10 5 ohms per square.

7. The additive manufacturing system of claim 6 , wherein the pattern is formed around the select area.

8. The additive manufacturing system of claim 6 , wherein the controller is to control the printhead to deposit the second portion of the printing agent onto the build material layer at select areas of the pattern of the object layer.

9. The additive manufacturing system of claim 6 , wherein the controller is to generate print data including defined print data to print the first portion at the first saturation level to form a build object body having conductivity in a resistivity range of greater than 10 9 ohms per square.

10. The additive manufacturing system of claim 6 , wherein the pattern and the select pattern area are the same.

Assignees

• Hewlett Packard Development Co

Inventors

• Long Greg Scott
• Wright Jake
• Matlock Phil D
• Erickson David L

Classifications

• B22F10/85

  for controlling or regulating additive manufacturing processes · 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

• B29C64/165 Primary

  using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber · CPC title

• B29C64/393 Primary

  for controlling or regulating additive manufacturing processes · CPC title