Andrew D Rice

US Patent:

20220326645, Oct 13, 2022

Filed:

Sep 30, 2020

Appl. No.:

17/765325

Inventors:

- Minnetonka MN, US
Manish Boorugu - Minneapolis MN, US
Andrew Rice - Chaska MN, US

International Classification:

G03G 15/22
G03G 15/20

Abstract:

Embodiments herein relate to 3D printing. In an embodiment, a method for printing an article using a selective toner electrophotographic process (“STEP”) includes successively depositing multiple layers of part material and support material, the layers deposited substantially parallel to a first plane; wherein: a) the multiple layers of part material and support material extend in a perpendicular to the first plane; and b) at least some of the layers of part material and support material are separated from each other to form a gap between the layers of part material and layers of support material; application of heat and pressure to the part material and support material such that a portion of the part material and support material flows into and at least partially fills the gap between the part material and support material.

US Patent:

20200338814, Oct 29, 2020

Filed:

Dec 28, 2017

Appl. No.:

16/958906

Inventors:

- Minnetonka MN, US
Andrew Rice - Chaska MN, US

International Classification:

B29C 64/147
B33Y 10/00
B33Y 50/02
B29C 64/393
G03G 15/22
G03G 15/00

Abstract:

A method of operating a selective deposition-based additive manufacturing system capable of building a three-dimensional (3D) part includes developing a first layer using at least one electrostatographic engine, conveying the first layer from the at least one EP engine to a transfusion assembly, determining an anticipated transfusion overlay error for the first layer, determining whether the anticipated transfusion overlay error exceeds an overlay error specification, discarding the first layer after determining that the anticipated transfusion overlay error exceeds the overlay error specification, developing a successive layer using the at least one electrostatographic engine, conveying the successive layer from the at least one electrostatographic engine to the transfusion assembly, and transfusing the successive layer on a part build surface using the transfusion assembly to build the 3D part in a layer-by-layer manner on a part build platform.

US Patent:

20200079025, Mar 12, 2020

Filed:

Sep 6, 2019

Appl. No.:

16/562624

Inventors:

- Minnetonka MN, US
Andrew Rice - Chaska MN, US

International Classification:

B29C 64/393
B29C 64/218
B33Y 10/00
B33Y 30/00
B33Y 50/02

Abstract:

A method of additive manufacturing utilizing selective layer deposition includes measuring a transfuse force between a transfuse roller and a part build surface. An angular position of the transfuse roller is measured over time. A component of a transfuse force variation that is periodic in a rotational period of the transfuse roller is estimated, and a vertical position between the transfuse roller and the part build surface is adjusted to reduce pressure variations in transfuse roller force on the build part surface