Three-dimensional printing

Patent metadata

Field	Value
Publication number	US-11986997-B2
Application number	US-201917052870-A
Country	US
Kind code	B2
Filing date	Mar 21, 2019
Priority date	Mar 21, 2019
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

Disclosed herein are kits, methods, systems, and compositions for threedimensional printing. In an example, disclosed herein is a multi-fluid kit for threedimensional printing comprising: a marking agent comprising a marking component which is a fluorescent color agent that is activated by ultraviolet radiation to emit light in the visible range of from about 400 nm to about 780 nm; a first fusing agent; a second fusing agent different from the first fusing agent; and a detailing agent.

First claim

What is claimed is:

1. A three-dimensional printing kit, comprising:
a powder build material selected from the group consisting of a polymeric powder, a polymeric-ceramic composite powder, and combinations thereof;
a marking agent comprising:
a fluorescent color agent that is activated by ultraviolet radiation to emit light in the visible range of from about 400 nm to about 780 nm;
water; and
an organic co-solvent;

a first fusing agent; and
a second fusing agent different from the first fusing agent.

2. The three-dimensional printing kit of claim 1 , further comprising:
a detailing agent; and
at least one colored ink composition.

3. The three-dimensional printing kit of claim 1 , wherein:
the fluorescent color agent is activated by ultraviolet radiation in the range of from about 200 nm to about 400 nm; and
the fluorescent color agent is hexasodium-2,2′-[vinylenebis[3-sulfonato-4,1-phenylene)imino[6-(diethylamino)-1,3,5-triazine4,2-diyl]imino]]bis(benzene-1,4-disulphonate).

4. A method of using the three-dimensional printing kit of claim 1 , the method comprising:
adding the powder build material, the marking agent, the first fusing agent, and the second fusing agent to a three-dimensional printer; and
printing a three-dimensional part.

5. A method for three-dimensional printing, comprising:
(i) depositing a layer of a polymeric powder build material on a build platform;
(ii) based on a 3D object model, selectively applying a first fusing agent, a second fusing agent different from the first fusing agent, a marking agent, a detailing agent, and at least one color agent to at least a portion of the layer of the polymeric powder build material;
(iii) repeating (i) and (ii) at least one time to form an intermediate part; and
(iv) heating the intermediate part to a temperature of up to about 180° C. to form a three-dimensional printed part,
wherein the marking agent comprises:
a fluorescent color agent that is activated by ultraviolet radiation to emit light in the visible range of from about 400 nm to about 780 nm;
water; and
an organic co-solvent.

6. The method of claim 5 , further comprising decaking the three-dimensional printed part.

7. The three-dimensional printing kit of claim 1 , wherein:
the fluorescent color agent is substantially invisible in ambient light; and
the fluorescent color agent is selected from the group consisting of distyrylbenzenes, distyrylbiphenyls, divinylstilbenes, triazinylaminostilbenes, stilbenyl-2H-triazoles, benzoxazoles, furans, benzo[b]furans, benzimidazoles, 1,3-diphenyl-2-pirazolines, coumarins, naphthalimides, organic europium (III) complexes, fluorescein, rhodamines, and mixtures thereof.

8. The three-dimensional printing kit of claim 1 , wherein:
the first fusing agent comprises at least one nanoparticle;
the at least one nanoparticle comprises at least one metal oxide, which absorbs infrared light in a range of from about 780 nm to about 2300 nm and has formula (1):
MmM′On  (1)

wherein M is an alkali metal, m is greater than 0 and less than 1, M′ is any metal, and n is greater than 0 and less than or equal to 4; and
the nanoparticle has a diameter of from about 0.1 nm to about 500 nm.

9. The three-dimensional printing kit of claim 1 , wherein the second fusing agent comprises a near infrared absorbing compound.

10. The three-dimensional printing kit of claim 9 , wherein the near infrared absorbing compound is selected from the group consisting of carbon black, oxonol, squarylium, chalcogenopyrylarylidene, bis(chalcogenopyrylo)polymethine, bis(aminoaryl)polymethine, merocyanine, trinuclear cyanine, indene-crosslinked polymethine, oxyindolidine, iron complexes, quinoids, nickel-dithiolene complex, cyanine dyes, and combinations thereof.

11. The three-dimensional printing kit of claim 2 , wherein the detailing agent comprises at least 70 wt % water based on the total weight of the detailing agent.

Assignees

• Hewlett Packard Development Co

Inventors

• Kabalnov Alexey
• Wright Jacob
• Schissler Dennis J
• Sabo Thomas M
• Tandy Jesiska

Classifications

• 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

• B33Y10/00 Primary

  Processes of additive manufacturing · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title