阅读说明：本技术 含有着色剂的熔合抑制剂 (Fusion inhibitor containing colorant ) 是由 V·维尔兹韦维尔特 M·A·谢普尔德 J·赖特 H·勒布朗 M·T·施拉姆 于 2017-07-10 设计创作，主要内容包括：在一个实例中,方法包括提供构建材料。包含着色剂的印刷剂可以施加到要在增材制造中熔合的构建材料的第一部分,其中根据第一部分的目标颜色施加所述印刷剂。可以将熔合抑制剂与着色剂的组合施加到构建材料的第二部分,其中根据第一部分的目标颜色施加该印刷剂,并且该第二部分与该第一部分相邻。该方法可以进一步包括通过将构建材料暴露于辐射来加热该构建材料,由此导致该第一部分的熔合。(In one example, a method includes providing a build material. A printing agent comprising a colorant can be applied to a first portion of a build material to be fused in additive manufacturing, wherein the printing agent is applied according to a target color of the first portion. A combination of a fusing inhibitor and a colorant can be applied to a second portion of the build material, wherein the printing agent is applied according to a target color of the first portion and the second portion is adjacent to the first portion. The method may further include heating the build material by exposing the build material to radiation, thereby causing fusion of the first portion.)

1. A method, comprising:

providing a build material;

applying a printing agent comprising a colorant to a first portion of a build material to be fused in additive manufacturing, wherein the printing agent is applied according to a target color of the first portion;

applying a combination of a fusion inhibitor and a colorant to a second portion of the build material adjacent to the first portion, wherein the combination is applied according to a target color of the first portion; and

heating the build material by exposing the build material to radiation to fuse the first portion.

2. A method according to claim 1 wherein the colorant applied to at least one of the first and second parts comprises a combination of a plurality of colored agents.

3. The method of claim 2, wherein the colorant applied to the second portion comprises a different combination of colored agents than the combination of colored printing agents applied to the first portion.

4. The method of claim 1, wherein the amount of fusion inhibitor applied is based on the energy absorption rate of the colorant applied to the second portion.

5. The method of claim 4, wherein the amount of fusion inhibitor applied is based on the energy absorption rate in the near infrared range of the colorant applied to the second portion.

6. The method of claim 1, wherein a printing agent is applied to the first and second portions of the build material to substantially uniform a thermal profile of a boundary between the first and second portions along the boundary.

7. Apparatus comprising processing circuitry, the processing circuitry comprising:

a print agent determination module to determine, based on a target color of a first portion of a build material to be fused in additive manufacturing of an object, a combination of a fusion inhibitor and a colorant to be applied to a second portion of the build material adjacent to the first portion, the second portion remaining unfused in additive manufacturing of the object, wherein the combination of the fusion inhibitor and the colorant provides the target color.

8. The apparatus of claim 7, wherein the print agent determination module determines a combination of a fusing inhibitor and a colorant to be applied to the second portion to match a color of the second portion to a target color of the first portion after fusing of the first portion.

9. The apparatus of claim 7, wherein the processing circuitry further comprises a fusion inhibitor determination module to determine an amount of fusion inhibitor to apply to the second portion of the build material based on an energy absorption rate of the colorant applied to the second portion.

10. The apparatus of claim 7, wherein the processing circuitry further comprises a control instructions module to generate control instructions to generate an object using a combination of a fusion inhibitor for the second portion of the build material and a colorant.

11. The apparatus of claim 10, further comprising an object generation apparatus to generate the object according to the control instruction.

12. A machine-readable medium storing instructions that, when executed by a processor, cause the processor to:

determining that a region of build material is to be partitioned into a first portion and a second portion in an additive manufacturing method, wherein the first portion is adjacent to the second portion;

selecting a printing agent to be applied to the first portion to fuse and form an object having a target color; and

selecting a combination of a fusing inhibitor and a colorant to be applied to the second portion,

wherein the selection is based on a target color of the first portion.

13. The machine-readable medium of claim 12 further storing instructions that, when executed by a processor, cause the processor to:

the combination of the printing agent and the fusing inhibitor and colorant are selected such that the thermal profile of the boundary between the first portion and the second portion is uniform along the boundary.

14. The machine-readable medium of claim 13, further storing instructions that, when executed by a processor, cause the processor to:

determining an amount of a fusing inhibitor to apply based on an energy absorption rate of a colorant to apply to the second portion.

15. The machine-readable medium of claim 12 further storing instructions that, when executed by a processor, cause the processor to:

a combination of colored agents to be applied to the first portion of colorant and a combination of colored agents to be applied to the second portion of colorant are determined, wherein the combination of colored agents to be applied to the second portion of colorant is different from the combination of colored agents to be applied to the first portion of colorant.

Background

Three-dimensional (3D) printing is an additive manufacturing method in which three-dimensional objects may be formed, for example, by selectively curing successive layers of build material. The object to be formed may be described in a data model. Selective curing may be achieved, for example, by fusing, bonding, or curing via methods including sintering, extrusion, and radiation. The quality, appearance, strength, and function of objects made by such systems may vary depending on the type of additive manufacturing technique used.