公开(公告)号：US11052687B2

公开(公告)日：2021-07-06

申请号：US16452960

申请日：2019-06-26

Applicant: Xerox Corporation

Inventor： Marc D. Daniels ,  Husein Naser Rashed ,  Jonathan R. Ireland

IPC: B41J25/00 ,  B41J3/407

Abstract: An object printer is configured to generate a three-dimensional map of a surface of an object to be printed and determine which areas in the three-dimensional map can be printed by a printhead movable in three-dimensional space. Areas can be printed when the printhead is positioned opposite an area where no inkjet in the printhead is closer than a minimum distance for accurate ink drop placement and all of the features in the area are within a maximum distance for accurate ink drop placement from the printhead. The areas that cannot be printed are deleted from the map and the map is displayed so a user can select where an ink image is to be formed on the object. The printer then operates an articulated arm to move the printhead opposite the surface at positions corresponding the selected area and operates the printhead to form the ink image.

公开(公告)号：US11130291B2

公开(公告)日：2021-09-28

申请号：US16370019

申请日：2019-03-29

Applicant: Xerox Corporation

Inventor： Marc D. Daniels ,  Jeffrey W. Drawe

IPC: B29C64/357 ,  B29C64/147 ,  B29C64/245 ,  B29C64/209

Abstract: Apparatus and methods are disclosed for reclaiming unused powder in a composite-based additive manufacturing process. According to aspects of the embodiments, there is provided process and apparatus that use a substrate layer frame inversion mechanism that can flip the substrate over 180 degrees. The excess powder will simply drop into a waste reclaim container for later reuse. An optional mechanical vibrator may be used to completely loosen any remaining powder.

公开(公告)号：US11104077B2

公开(公告)日：2021-08-31

申请号：US16370269

申请日：2019-03-29

Applicant: Xerox Corporation

Inventor： Marc D. Daniels ,  Jeffrey W. Drawe

IPC: B32B41/00 ,  B29C64/393 ,  B29C64/188 ,  B29C64/147

Abstract: According to aspects of the embodiments, there is provided process and apparatus to analyze imaging problems including but not limited to detecting defects of an imaging substrate useful in a Composite-Based Additive Manufacturing (CBAM) process. Data from the at least one imaging sensor may be used to: compensate for irregularities in a substrate deposited layer; compensate for irregularities in the printed layer, such as missing jet correction; reject a layer, the layer being scrapped and re-printed; pause the print job so that maintenance or service may be performed; or provide traceability data for proof-of-work, forensic, diagnostic, or other purposes. Depending on system architecture and design goals, the imaging sensor may be employed prior to or subsequent to the deposition of a printed layer.

公开(公告)号：US11046002B2

公开(公告)日：2021-06-29

申请号：US16369286

申请日：2019-03-29

Applicant: Xerox Corporation

Inventor： Marc D. Daniels ,  Jeffrey W. Drawe

IPC: B29C64/30 ,  B29C64/112 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y70/00 ,  B29K105/00

Abstract: According to aspects of the embodiments, there is provided process and apparatus to use additives with the clear wetting agent to aid in detection of defective substrates or missing jets. For light colored substrates, dye can be used for darkening of the wetting agent to provide sufficient contrast for defect detection. For dark colored substrates, the dye could be a specific color that a sensor is tuned for. An additive that glows only in the presence of a specific wave length of light could be utilized for any color substrate. By comparing the detected pattern to the desired pattern, end product voids can be greatly reduced or eliminated.

公开(公告)号：US10940691B2

公开(公告)日：2021-03-09

申请号：US16268777

申请日：2019-02-06

Applicant: Xerox Corporation

Inventor： Marc D. Daniels ,  Husein Naser Rashed ,  Roger G. Leighton ,  Kelly J. Burton

IPC: B41J2/175 ,  B25J9/16 ,  B41J3/407 ,  B41J25/308

Abstract: An inkjet printer adjusts operation of a vacuum system coupled to a printhead to compensate for pressure changes in the manifold of the printhead caused by vertical displacement of the printhead within the printer. The inkjet printer includes a controller that determines either a difference between an optimal pressure in the manifold and a current pressure to operate a vacuum coupled to the manifold for pressure adjustment or it correlates a current printhead vertical position to a previously observed vertical position and uses a vacuum value associated with the previously observed vertical position to operate the vacuum.

公开(公告)号：US09630407B1

公开(公告)日：2017-04-25

申请号：US15058114

申请日：2016-03-01

Applicant: XEROX CORPORATION

Inventor： James J. Spence ,  Mark A. Atwood ,  Jack Gaynor Elliot ,  Marc D. Daniels

IPC: B41J2/14

CPC classification number: B41J2/14233 ,  B41J2/1433 ,  B41J2002/14419 ,  B41J2202/11

Abstract: A print head includes a backup plate and a nozzle plate. The backup plate has a non-planar lower surface. The nozzle plate also has a non-planar lower surface. The nozzle plate is coupled to the lower surface of the backup plate.