公开(公告)号：US11747207B2

公开(公告)日：2023-09-05

申请号：US17643607

申请日：2021-12-10

Applicant: Xerox Corporation

Inventor： Robert Anthony Street

IPC: G01J3/51 ,  H01L27/146

CPC classification number: G01J3/513 ,  H01L27/1461 ,  H01L27/14616 ,  H01L27/14621 ,  H01L27/14623 ,  H01L27/14629 ,  H01L27/14645

Abstract: A system of optical sensors determines whether an object is placed on the system by passing light through the sensor layer, detecting light reflected from the object above the sensor layer, and identifying the object based on whether a color detected in the light corresponds to a color of the side of the object that is positioned on the system over the sensor layer. When the system includes multiple optical sensor units, the system may determine where the object has been placed by determining which of the sensor units detect light reflected from the side of the object.

公开(公告)号：US12056994B2

公开(公告)日：2024-08-06

申请号：US16929531

申请日：2020-07-15

Applicant: Xerox Corporation

Inventor： Ping Mei ,  Robert Anthony Street ,  Kent Evans

IPC: G08B13/14 ,  A41D31/04 ,  B32B5/02 ,  B32B25/10 ,  H01B1/22 ,  H01B5/14 ,  H05K1/18 ,  H05K3/10

CPC classification number: G08B13/1472 ,  A41D31/04 ,  B32B5/024 ,  B32B5/028 ,  B32B25/10 ,  H01B1/22 ,  H01B5/14 ,  H05K1/18 ,  H05K3/10 ,  B32B2307/202 ,  C09J2203/358

Abstract: Systems and methods are provided for monitoring object placement on a surface. The system includes a pressure-sensitive conductive sheet. The pressure-sensitive conductive sheet includes a stretchable fabric, having a plurality of fibers, and a conductive material positioned on a plurality of adjoining fibers of the stretchable fabric. The system further includes a 3-dimensional structure positioned under the pressure-sensitive conductive sheet. The 3-dimensional structure includes one or more depressions onto which the stretchable fabric can be stretched and the conductive material is positioned over the one or more depressions.

公开(公告)号：US12172209B2

公开(公告)日：2024-12-24

申请号：US17448997

申请日：2021-09-27

Applicant: XEROX CORPORATION

Inventor： David K. Biegelsen ,  Robert Anthony Street

IPC: B22D23/00 ,  B22F12/53 ,  B33Y30/00

Abstract: A three-dimensional (“3D”) printer. The 3D printer comprises: a feeder mechanism for advancing a print material; a plurality of ejector conduits arranged in an array, each ejector conduit comprising a first end positioned to accept the print material from the feeder mechanism, a second end comprising an ejector nozzle, and a passageway defined by an inner surface of the ejector conduit for allowing the print material to pass through the ejector conduit from the first end to the second end, the ejector nozzle comprising a first electrode and a second electrode, at least one surface of the first electrode being exposed in the passageway and at least one surface of the second electrode being exposed in the passageway; a current pulse generating system in electrical contact with the ejector nozzle of each of the plurality of ejector conduits, the current pulse generating system being configured to flow an electrical current between the first electrode and the second electrode to provide sufficient thermal expansion so as to eject an electrically conductive print material in the event the electrically conductive print material is positioned in the ejector nozzle; and a positioning system for controlling the relative position of the array with respect to a print substrate in a manner that would allow the print substrate to receive print material jettable from the ejector nozzle of each of the plurality of ejector conduits during operation of the 3D printer.

公开(公告)号：US11806783B2

公开(公告)日：2023-11-07

申请号：US17449006

申请日：2021-09-27

Applicant: XEROX CORPORATION

Inventor： David K. Biegelsen ,  Robert Anthony Street

IPC: B22F10/22 ,  B33Y10/00 ,  B33Y30/00 ,  B22D23/00 ,  B22F12/53

CPC classification number: B22F10/22 ,  B22D23/003 ,  B22F12/53 ,  B33Y10/00 ,  B33Y30/00

Abstract: A method of printing a three-dimensional object. The method comprises supplying a print material that is electrically conductive to a plurality of ejector conduits arranged in an array, the ejector conduits comprising first ends configured to accept the print material and second ends comprising ejector nozzles; advancing the print material in one or more of the ejector conduits of the array until the print material is disposed in the ejector nozzle of the one or more ejector conduits; flowing electrical current through the print material positioned in at least one of the ejector nozzles, thereby heating and expanding the print material in the at least one of the ejector nozzles so as to eject at least a portion of the print material from the at least one of the ejector nozzles onto a print substrate; and repeating both the advancing and the flowing electrical current through the print material to form a three-dimensional object on the print substrate.