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公开(公告)号：US20210138802A1
公开(公告)日：2021-05-13
申请号：US16679215
申请日：2019-11-10
Applicant: Xerox Corporation
Inventor： Douglas K. Herrmann , Seemit Praharaj , Michael J. Levy , Jason M. Lefevre , Paul McConville , Chu-Heng Liu , Linn C. Hoover , David A. VanKouwenberg
IPC: B41J11/00
Abstract: A vacuum roller system and a method of operating the vacuum roller system can include a group of vacuum rollers operable to move a sheet of media through a dryer. The vacuum rollers do not require a vacuum to be drawn between the vacuum rollers. Each vacuum roller can include a plenum operable to direct the vacuum to a top portion of the vacuum roller to drive the sheet of media from one roller to the next roller. The plenum can engage vacuum holes in a rotating vacuum roller when the vacuum holes in the vacuum roller are aligned with the plenum.
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公开(公告)号：US10377147B2
公开(公告)日：2019-08-13
申请号：US15477631
申请日：2017-04-03
Applicant: Xerox Corporation
Inventor： Chu-Heng Liu , Paul J. McConville , Jason M. Lefevre , Douglas K. Herrmann
Abstract: What is disclosed is an object holder for retaining an object in a direct-to-object print system and a direct-to-object print system configured to use various embodiments of the object holder of the present invention. In one embodiment, the object holder comprises a shuttle mount configured to slideably traverse a support member positioned parallel to a plane formed by the printhead. At least one collapsible membrane is attached to the shuttle mount. The membrane forms an airtight sack filled with granules. The membrane collapses at least partially around an object when a volume of air is withdrawn from the membrane by a vacuum pump. The vacuum pump withdrawing a volume of air from the membrane causes the membrane to collapse and tightly pack the granules inside the membrane. The vacuum-packed granules cause the membrane to conform to the shape of the object thereby securing the object to the shuttle mount.
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13.发明授权公开(公告)号：US10154158B2
公开(公告)日：2018-12-11
申请号：US15477156
申请日：2017-04-03
Applicant: Xerox Corporation
Inventor： Paul J. McConville , Jason M. Lefevre , Chu-Heng Liu , Douglas K. Herrmann , Kelly Burton , Christopher Douglas Atwood , Elizabeth M. Crossen , Annie Liu
Abstract: What is disclosed is system which facilitates the application of a mark to a surface of an object in a direct-to-object print system and a direct-to-object print system configured to use various embodiments of the present marking system. The present marking system comprises a camera for capturing an image of an object retained by an object holder configured to slideably traverse a support member positioned to be parallel to a plane formed by at least one printhead configured to eject in onto a surface of the object. A processor receives an image of an object held and communicates the image to a display. A mark to be printed on the object is retrieved and overlaid on the object in the image. A location of the overlaid mark is determined and communicated to a controller which causes the printhead to print the mark on the object at the location.
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公开(公告)号：US09878565B1
公开(公告)日：2018-01-30
申请号：US15384417
申请日：2016-12-20
Applicant: Xerox Corporation
Inventor： Paul J. McConville , Jason M. Lefevre , Steven R. Moore , Douglas K. Herrmann
IPC: B41J29/38 , B41J29/13 , B41J29/02 , B41J2/175 , B41J29/377 , G05D23/13 , B41J2/335 , B41J2/44 , B41J2/475 , G02B7/18
CPC classification number: B41J29/377 , B41J2/3358 , B41J2/442 , B41J2/4753 , G02B7/181 , G05D23/1393
Abstract: A cooling control system and method comprise a power meter for measuring a power of a laser, a temperature controller configured to adjust a temperature of fluid circulating through a cooling block, and a chip connected to the cooling block wherein the temperature controller regulates said temperature of the coolant in order to prevent the chip from overheating or from developing condensation on the chip.
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15.发明授权公开(公告)号：US11685150B2
公开(公告)日：2023-06-27
申请号：US17358634
申请日：2021-06-25
Applicant: Xerox Corporation
Inventor： Seemit Praharaj , Chu-heng Liu , Paul J. McConville , Douglas K. Herrmann , Jason M. Lefevre
CPC classification number: B41F31/022 , B41F31/13
Abstract: A coefficient of friction (COF) sensor on a carrier roll surface wetted with fountain solution transferred from an imaging member measures COF of the wetted carrier roll surface in real-time, even between or during printing operations. The transferred fountain solution may be concentrated and/or chilled to solidify before the measurement. The measured COF is used in a feedback loop to actively control the fountain solution layer thickness by adjusting the volumetric feed rate of fountain solution added onto the imaging member surface during an imaging or other printing operation to reach a desired uniform thickness for the printing. This fountain solution monitoring system may be fully automated.
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Patent Agency Ranking
公开(公告)号：US10279610B2
公开(公告)日：2019-05-07
申请号：US15384425
申请日：2016-12-20
Applicant: Xerox Corporation
Inventor： Paul J. McConville , Jason M. Lefevre , Steven R. Moore , Douglas K. Herrmann
IPC: H01L23/34 , B41J29/377 , F28F7/02 , F28F3/12 , H01L23/40 , H01L23/473 , F28D21/00 , F28F13/00 , H01L23/367
Abstract: A temperature control system, the system comprising a cooling block configured to be in conductive communication with a heat source, said cooling block comprising a stem and a base, a cooling fluid configured to circulate through the base of the cooling block, and an electrical barrier formed in the base of the cooling block between the heat source and the cooling fluid.
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公开(公告)号：US10067362B2
公开(公告)日：2018-09-04
申请号：US15354301
申请日：2016-11-17
Applicant: Xerox Corporation
Inventor： Douglas K. Herrmann , Steven R. Moore , Jason M. Lefevre , Paul J. McConville
Abstract: A switchable mirror system and method includes a laser imaging module including one or more lasers and one or more DMDs (Digital Micromirror Devices), and a switchable mirror component located in a path upstream from the DMD (or DMDs) to direct a laser from the DMD when there is pause in a printing operation facilitated by said laser imaging module. A non-mechanical and electronic switchable mirror is thus located in the laser path between an LDA (Laser Diode Array) and a DMD to divert energy out of the system and away from the DMD during periods of non-laser imaging without reducing or power down the laser system.
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18.发明授权公开(公告)号：US10054857B2
公开(公告)日：2018-08-21
申请号：US15354267
申请日：2016-11-17
Applicant: Xerox Corporation
Inventor： Douglas K. Herrmann , Jason M. Lefevre , Paul J. McConville , Steven R. Moore
Abstract: A laser imaging system and method for printing includes a digital micromirror device and a switchable mirror element that acts as a clear lens element during the printing by the laser imaging system. A laser diode array provides a laser to the switchable mirror element in a laser path, wherein the switchable mirror element is located in the laser path between the laser diode array and the digital micromirror device to divert energy out of the system and away from the digital micromirror device during periods of non-laser imaging without reducing or powering down the laser system.
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19.发明授权公开(公告)号：US09421785B1
公开(公告)日：2016-08-23
申请号：US14956665
申请日：2015-12-02
Applicant: Xerox Corporation
Inventor： David Alan Vankouwenberg , Jason M. Lefevre , Frank Berkelys Tamarez Gomez , Steven M. Russel , Timothy P. Foley
IPC: B41J2/175
CPC classification number: B41J2/17566 , B41J2/175 , B41J2/17513
Abstract: What is disclosed is an apparatus and method for inhibiting the formation of sediment in an ink sub-tank of a MICR inkjet printer. In one embodiment, the present apparatus comprises an ink sub-tank containing MICR ink substantially comprising a ferrofluid of particles, and an electromagnet. When the MICR inkjet printer is turned OFF, the electromagnet is lowered into a chamber inside the ink sub-tank and an electric current is applied to activate the electromagnet. Activation of the electromagnet causes the particles of the ferrofluid to be attracted to the electromagnet's magnetic field such that the particles are lifted off a bottom of the sub-tank to inhibit sediment formation thereon. The electromagnet is de-activated when the MICR inkjet printer is turned OFF. A sensor is employed to activate the electromagnet when sediment in the ink sub-tank has reached a pre-determined level.
Abstract translation: 所公开的是用于抑制MICR喷墨打印机的墨水副容器中的沉积物的形成的装置和方法。 在一个实施方案中，本装置包括含有基本上包含颗粒的铁磁流体的MICR墨水的墨水副容器和电磁体。 当MICR喷墨打印机关闭时，电磁铁下降到墨水副箱内的一个室内，并施加一个电流来激活电磁铁。 电磁体的激活导致铁磁流体的颗粒被吸引到电磁体的磁场，使得颗粒从副罐的底部被提升以抑制其中的沉积物形成。 当MICR喷墨打印机关闭时，电磁铁被取消激活。 当墨水副罐中的沉积物达到预定水平时，使用传感器来激活电磁体。
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公开(公告)号：US11639067B2
公开(公告)日：2023-05-02
申请号：US16679220
申请日：2019-11-10
Applicant: Xerox Corporation
Inventor： Jason M. Lefevre , Seemit Praharaj , Michael J. Levy , Douglas K. Herrmann , Paul McConville , Chu-Heng Liu , Linn C. Hoover , David A. VanKouwenberg
Abstract: A marker transport system and a method of operating the marker transport system. A group of print bars is located with respect to a marker transport platen and a marker transport belt. A vacuum source and a pneumatic solenoid block are associated with the marker transport platen. The marker transport platen includes airflow sections divided into process-direction slots and cross-section direction slots. The cross-section direction slots are located beneath the print bars and are connected to the vacuum source via the pneumatic solenoid block, which facilitates an individual control of each of the cross-process direction slots. Pneumatic valves are associated with the pneumatic solenoid block, which supplies a flow of vacuum to the cross-process direction vacuum slots. The pneumatic vales can be timed to allow the vacuum to be present when a sheet is present over a corresponding vacuum slot among the process-direction slots and the cross-section direction slots.
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