Joanne Long Lee

US Patent:

20220281228, Sep 8, 2022

Filed:

Mar 5, 2021

Appl. No.:

17/194201

Inventors:

- Palo Alto CA, US
David K. Biegelsen - Portola Valley CA, US
Gregory B. Anderson - Emerald Hills CA, US
Joerg Martini - San Francisco CA, US
Joanne L. Lee - Palo Alto CA, US

International Classification:

B41J 2/335

Abstract:

A method and system for enabling a patterned liquid, can involve creating a heat image on an imaging blanket by selectively heating the imaging blanket with a digitally controlled energy source, and subjecting the heat image to a selective deposition of a fountain solution material to enable vapor condensation on unheated areas and vapor rejection from heated areas to generate a fountain material image.

US Patent:

20220227117, Jul 21, 2022

Filed:

Jan 19, 2022

Appl. No.:

17/579360

Inventors:

- Palo Alto CA, US
Robert A. STREET - Palo Alto CA, US
David K. BIEGELSEN - Portola Valley CA, US
Gregory B. ANDERSON - Emerald Hills CA, US
Joanne L. LEE - Rochester NY, US
Joerg MARTINI - San Francisco CA, US
Kathryn F. MURPHY - Redwood City CA, US
Thomas WUNDERER - Santa Cruz CA, US

International Classification:

B41F 7/08
B41F 7/26
B41C 1/10
B41M 1/06

Abstract:

Ink-based digital printing systems useful for ink printing include a secondary roller having a rotatable reimageable surface layer configured to receive fountain solution. The fountain solution layer is patterned on the secondary roller and then partially transferred to an imaging blanket, where the fountain solution image is inked. The resulting ink image may be transferred to a print substrate. To achieve a very high-resolution (e.g., 1200-dpi, over 900-dpi) print with these secondary roller configurations, an equivalent very high-resolution fountain solution image needs to be transferred from the secondary roller onto the imaging blanket. To increase the resolution of the image on the secondary roller, examples include a textured surface layer added to the secondary roller for contact angle pinning the fountain solution on the roll. Approaches to introduce a micro-structure onto the surface layer of the secondary roller, and also superoleophobic surface coatings are described.

US Patent:

20220176618, Jun 9, 2022

Filed:

Dec 8, 2020

Appl. No.:

17/114638

Inventors:

- Palo Alto CA, US
Joanne L. Lee - Palo Alto CA, US

Assignee:

PALO ALTO RESEARCH CENTER INCORPORATED - Palo Alto CA

International Classification:

B29C 64/112
B29C 64/245
B29C 64/209
B29C 64/268
B29C 64/286
B29C 64/393
B29C 64/282

Abstract:

Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets in a flight path interposed between the printhead and the substrate.

US Patent:

20220176630, Jun 9, 2022

Filed:

Dec 8, 2020

Appl. No.:

17/114607

Inventors:

- Palo Alto CA, US
Joanne L. Lee - Palo Alto CA, US

Assignee:

PALO ALTO RESEARCH CENTER INCORPORATED - Palo Alto CA

International Classification:

B29C 64/268
B33Y 10/00
B33Y 30/00
B33Y 50/02
B33Y 70/00
B22D 23/00
B29C 64/112
B29C 64/286
B29C 64/393

Abstract:

Additive manufacturing devices and methods for the same are provided. The additive manufacturing device may include a stage configured to support a substrate, a printhead disposed above the stage, and a targeted heating system disposed proximal the printhead. The printhead may be configured to heat a build material to a molten build material and deposit the molten build material on the substrate in the form of droplets to fabricate the article. The targeted heating system may be configured to control a temperature or temperature gradient of the droplets deposited on the substrate, an area proximal the substrate, or combinations thereof.