公开(公告)号：AT540334T

公开(公告)日：2012-01-15

申请号：AT09174454

申请日：2006-03-20

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES ,  PARTANEN JOUNI ,  SPERRY CHARLES ,  DUNNE PATRICK ,  SCOTT SUZANNE ,  MCNAMARA DENNIS ,  MANNERS CHRIS

IPC: G03F7/00 ,  B29C67/00 ,  G03F7/20

Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.

公开(公告)号：DE602006011819D1

公开(公告)日：2010-03-11

申请号：DE602006011819

申请日：2006-03-20

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES W ,  PARTANEN JOUNI P ,  SPERRY CHARLES R ,  DUNNE PATRICK ,  SCOTT SUZANNE M ,  MCNAMARA DENNIS F ,  MANNERS CHRIS R

IPC: B29C67/00 ,  G03F7/20

Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.

公开(公告)号：AT456074T

公开(公告)日：2010-02-15

申请号：AT06251474

申请日：2006-03-20

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES W ,  PARTANEN JOUNI P ,  SPERRY CHARLES R ,  DUNNE PATRICK ,  SCOTT SUZANNE M ,  MCNAMARA DENNIS F ,  MANNERS CHRIS R

IPC: G03F7/00 ,  B29C67/00 ,  G03F7/20

Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.

公开(公告)号：AT456075T

公开(公告)日：2010-02-15

申请号：AT06251473

申请日：2006-03-20

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES W ,  PARTANEN JOUNI P ,  SPERRY CHARLES R ,  DUNNE PATRICK ,  SCOTT SUZANNE M ,  MCNAMARA DENNIS F ,  MANNERS CHRIS R

IPC: G03F7/00 ,  B29C67/00 ,  G03F7/20

Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.

公开(公告)号：DE602006011802D1

公开(公告)日：2010-03-11

申请号：DE602006011802

申请日：2006-03-20

Applicant: 3D SYSTEMS INC

Inventor： HULL CHARLES W ,  PARTANEN JOUNI P ,  SPERRY CHARLES R ,  DUNNE PATRICK ,  SCOTT SUZANNE M ,  MCNAMARA DENNIS F ,  MANNERS CHRIS R

IPC: G03F7/00 ,  B29C67/00 ,  G03F7/20

Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.

公开(公告)号：DE602005009638D1

公开(公告)日：2008-10-23

申请号：DE602005009638

申请日：2005-12-02

Applicant: 3D SYSTEMS INC

Inventor： CHUNG TAE MARK ,  BISHOP RAYMOND J ,  GEVING BRADLEY DAVID ,  FONG JON JODY ,  DUNNE PATRICK

IPC: B22F3/105 ,  B22F3/11 ,  B29C35/16 ,  B29C67/00

Abstract: The invention is a method for controllably cooling at least a portion of a part-cake from a laser sintering system to minimize cool down time, maximize throughput, and minimize thermal gradients within the part-cake. The method generally comprises forming one or more thermal transfer channels within the part-cake. The thermal transfer channels can include ducts and cooling fins in the part-cake surrounding the formed part. The method can further comprise removing unfused powder from the ducts and introducing cooling media into the ducts. The invention also includes a part-cake having thermal transfer channels formed therein and a laser sintering apparatus comprising a part-cake containing cylinder having permanent fittings therein for receiving terminal portions of thermal transfer channels formed in the part-cake.