公开(公告)号：US12086403B2

公开(公告)日：2024-09-10

申请号：US17190501

申请日：2021-03-03

申请人： Xerox Corporation

发明人： Douglas K. Herrmann ,  Seemit Praharaj ,  Jason M. LeFevre ,  Paul J. McConville ,  Chu-Heng Liu ,  Linn C. Hoover ,  David A. VanKouwenberg

IPC分类号： G06F3/0488 ,  B08B1/10 ,  G06K15/02

CPC分类号： G06F3/0488 ,  B08B1/10 ,  B08B2240/00 ,  G06K15/1809

摘要： Devices include first and second frame elements having mounting points connectable to opposite ends (e.g., first end, second end) of the touchscreen. First and second rollers are connected, respectively, to the first and second frame elements. A web of transparent material is supported by and between the first and second rollers. Further, an ultraviolet light device is connected to the second frame element and is positioned to expose the web of transparent material to ultraviolet radiation to disinfect the transparent material between users.

公开(公告)号：US20240262114A1

公开(公告)日：2024-08-08

申请号：US18164225

申请日：2023-02-03

申请人： Xerox Corporation

发明人： Varun Sambhy ,  Jason M. LeFevre ,  Seemit Praharaj ,  Douglas K. Herrmann

IPC分类号： B41J29/17 ,  B41J11/00

CPC分类号： B41J29/17 ,  B41J11/007

摘要： An inkjet printer and method of operating the inkjet printer ejects ink drops onto coated areas of a media transport exposed in the inter-document zones between successive media sheets passing through a print zone of the printer to maintain the operational status of the inkjets ejecting the ink drops. Absorbent material is positioned outside of the print zone to contact the media transport and remove the ejected ink drops from the coated areas. The absorbent material can be configured about two rollers so operating an actuator to rotate one of the rollers pulls absorbent material from a supply roll to a take-up roll to provide clean absorbent material for removal of the ejected ink drops from time to time.

公开(公告)号：US12053982B2

公开(公告)日：2024-08-06

申请号：US17932165

申请日：2022-09-14

申请人： Xerox Corporation

发明人： Seemit Praharaj ,  Jason M. LeFevre ,  Douglas K. Herrmann ,  Chu-Heng Liu ,  Jorge A. Alvarez

IPC分类号： B41J2/045

CPC分类号： B41J2/04558

摘要： A method of operating a printer identifies image areas in ink image content data that are likely to affected by airflow disturbances to produce ink blur within an ink image. Inkjets farthest from these areas are selected to eject ink drops into these areas to form portions of an ink image. The image areas identified as being likely to produce ink blur are the leading edge, trailing edge, and side edge of the ink image content data. The ink drops ejected by these selected inkjets and their satellites are less likely to be affected adversely by the airflow disturbances.

公开(公告)号：US20240253361A1

公开(公告)日：2024-08-01

申请号：US18160623

申请日：2023-01-27

申请人： Xerox Corporation

发明人： Jason M. LeFevre ,  Douglas K. Herrmann ,  Seemit Praharaj ,  Varun Sambhy

IPC分类号： B41J2/21

CPC分类号： B41J2/2103

摘要： An inkjet printer and method of operating the inkjet printer modifies the image content data for an ink image to be printed on a media sheet to maintain the operational status of each inkjet in the inkjet printer. For each inkjet that is operated less than an operational threshold, image data is added to the image content data to operate each inkjet at the operational threshold.

公开(公告)号：US11878349B2

公开(公告)日：2024-01-23

申请号：US17393115

申请日：2021-08-03

申请人： Xerox Corporation

发明人： Seemit Praharaj ,  Douglas K. Herrmann ,  Thomas J. Wyble ,  Jason M. LeFevre ,  Chu-Heng Liu ,  Paul J. McConville

IPC分类号： B22F12/50 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B22D23/00 ,  B22F10/22 ,  B22F10/85

CPC分类号： B22F12/50 ,  B22D23/003 ,  B22F10/22 ,  B22F10/85 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

摘要： A three-dimensional (3D) metal object manufacturing apparatus is equipped with two solid metal moving mechanisms that are independently operated to move two different metals into the receptacle of a vessel in a melted metal drop ejecting apparatus. The ejector is operated to form object features with melted metal drops of one of the two different metals and to form support features with melted metal drops of the other of the two different metals. The thermal expansion coefficients of the two metals are sufficiently different that the support features easily separate from the object features after the object and support features cool.

公开(公告)号：US11794251B2

公开(公告)日：2023-10-24

申请号：US17147773

申请日：2021-01-13

申请人： Xerox Corporation

发明人： Jason M. LeFevre ,  Joseph C. Sheflin ,  Paul J. McConville ,  Joshua Hilton

IPC分类号： B22F10/22 ,  B33Y30/00 ,  B33Y50/02 ,  B22F12/53 ,  B22F10/85 ,  B29C64/371 ,  B33Y10/00 ,  B22D23/00

CPC分类号： B22F10/22 ,  B22D23/003 ,  B22F10/85 ,  B22F12/53 ,  B29C64/371 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F2301/052

摘要： A three-dimensional (3D) metal object manufacturing apparatus is equipped with a removable vessel to reduce the time required for start-up procedures after the printer is serviced. The removable vessel is filled with solid metal that is heated to its melting temperature before the bulk wire is inserted into the vessel to commence printing operations. The melting of the solid metal in the removable vessel requires less time that the melting of an length of bulk wire adequate to produce a volume of melted metal suitable for printer operation. The solid metal in the removable vessel can be metal pellets, metal powder, or a solid metal insert.

公开(公告)号：US11718107B2

公开(公告)日：2023-08-08

申请号：US17218900

申请日：2021-03-31

申请人： XEROX CORPORATION

发明人： Chu-Heng Liu ,  Douglas K. Herrmann ,  Jason M. LeFevre ,  Paul J. McConville ,  Seemit Praharaj

IPC分类号： B41J29/38 ,  B41J11/00

CPC分类号： B41J11/0085

摘要： A printing system comprises a printhead to eject a print fluid to a deposition region. A movable support surface, such as a belt, is used to transport print media through the deposition region, with the print media being held against the movable support surface by vacuum suction through holes in the movable support surface. A media registration device loads print media onto the movable support surface and registers the print media to a location of the movable support surface. The movable support surface comprises no-suction-regions in which the vacuum suction through the movable support surface is prevented. The no-suction regions extend across the width of the movable support surface in a cross-process direction and are arranged at predetermined intervals along the process direction. The control system causes the media registration device to register each of the print media relative to a respective one of the no-suction-regions.

公开(公告)号：US11667136B2

公开(公告)日：2023-06-06

申请号：US17218873

申请日：2021-03-31

申请人： XEROX CORPORATION

发明人： Douglas K. Herrmann ,  Jason M. LeFevre ,  Chu-Heng Liu ,  Paul J. McConville ,  Seemit Praharaj

IPC分类号： B41J11/00

CPC分类号： B41J11/0085 ,  B41J11/007

摘要： A printing system comprises a printhead to eject a print fluid to a deposition region. Print media are held by vacuum suction against a movable support surface, which moves over a vacuum platen to transport the print media through the deposition region. The vacuum platen has platen holes through which the vacuum suction is communicated. Multiple vacuum plenums are provided to supply the vacuum suction to different groups of the platen holes. A first vacuum plenum is fluidically coupled to a first group of the platen holes located at least partially in the deposition region, and to a second group of platen holes located upstream of the first group. A second vacuum plenum is fluidically coupled to a third group of the platen holes comprising at least some platen holes located between the first and second groups of platen holes.

公开(公告)号：US20230158575A1

公开(公告)日：2023-05-25

申请号：US17534040

申请日：2021-11-23

申请人： XEROX CORPORATION

发明人： Seemit Praharaj ,  Douglas K. Herrmann ,  Jason M. LeFevre

IPC分类号： B22F12/53 ,  B22D23/00 ,  B22F10/22 ,  B22F12/90 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC分类号： B22F12/53 ,  B22D23/003 ,  B22F10/22 ,  B22F12/90 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

摘要： A metal ejecting apparatus is disclosed. The metal ejecting apparatus includes a nozzle orifice in connection with the inner cavity and configured to eject one or more droplets of the liquid metal printing material, a float in contact with a surface of the liquid metal printing material, where the float is buoyant within the liquid printing material, and a filament attached to the float on a first end and attached to a level sensing system on a second end. The level sensing system may include an ultrasonic sensor, a visual sensor, a mechanical force sensor, a laser sensor, or a combination thereof. A method of sensing and controlling a level of liquid printing material in a metal jetting apparatus is also disclosed.

公开(公告)号：US11648784B2

公开(公告)日：2023-05-16

申请号：US17216232

申请日：2021-03-29

申请人： XEROX CORPORATION

发明人： Douglas K. Herrmann ,  Jason M. LeFevre ,  Chu-Heng Liu ,  Paul J. McConville ,  Seemit Praharaj

IPC分类号： B41J29/38 ,  B41J11/00

CPC分类号： B41J11/0085

摘要： A printing system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a printhead to eject a print fluid through an opening of a carrier plate to a deposition region. The media transport device holds a print medium against the movable support surface by vacuum suction and transports the print medium through the deposition region. The air flow control system comprises an air supply unit to selectively flow air through the opening based on a location of a print medium relative to the printhead. The air supply unit comprises an air guide structure comprising an air outlet portion extending into the opening of the carrier plate between the printhead and the carrier plate, the air outlet portion terminating in an end wall that is angled obliquely relative to the movable support surface towards a reverse-process direction.