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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：US20200254765A1
公开(公告)日：2020-08-13
申请号：US16272086
申请日：2019-02-11
Applicant: Xerox Corporation
Inventor： Paul J. McConville , Jason M. LeFevre , Michael J. Levy , Seemit Praharaj , Chu-heng Liu , David A. VanKouwenberg , Linn C. Hoover , Douglas K. Herrmann
Abstract: A cap is positioned to contact a printhead when the printhead is not ejecting liquid ink. The cap and the printhead create a sealed space adjacent printhead nozzles when contacting each other. A heated evaporator is connected to the cap and is adapted to evaporate an ink-compatible liquid to form a water and/or solvent vapor and supply the water and/or solvent vapor to the sealed space to protect the liquid ink in the nozzles. An insulator thermally insulates the heated evaporator from the printhead. This prevents the ink in the nozzles from drying and prevents the nozzles from clogging.
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公开(公告)号：US20200254761A1
公开(公告)日：2020-08-13
申请号：US16272048
申请日：2019-02-11
Applicant: Xerox Corporation
Inventor： Michael J. Levy , Seemit Praharaj , Paul J. McConville , Jason M. LeFevre , Linn C. Hoover , Chu-heng Liu , David A. VanKouwenberg , Douglas K. Herrmann , John T. Newell , Richard A. Campbell , Ali R. Dergham , Glenn D. Batchelor , Robert A. Clark , Senthil Sivaraman
IPC: B41J2/165
Abstract: A cap is positioned to contact a printhead when the printhead is not ejecting liquid ink. The cap and the printhead create a sealed space adjacent printhead nozzles when contacting each other. A flexible blade is positioned to contact the printhead when the printhead is not in contact with the cap. The flexible blade is adapted to fold over to spread a liquid solution on the nozzles in a first direction, and the flexible blade is adapted to remove excess amounts of the liquid solution from the nozzles in a second direction. A humidifier is connected to the cap and adapted to supply a moisture form of the liquid solution to the sealed space. A moisture sensor is connected to the cap. The humidifier is adapted to vary supply of the moisture to the sealed space based on the amount of moisture detected by the moisture sensor.
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公开(公告)号：US10518551B1
公开(公告)日：2019-12-31
申请号：US16215806
申请日：2018-12-11
Applicant: Xerox Corporation
Inventor： Paul J. McConville , Christopher D. Atwood , Seemit Praharaj , Michael J. Levy
IPC: B41J2/175
Abstract: An ink reservoir in an ink delivery system of an inkjet printer is selectively pressurized and depressurized to fluctuate an ink meniscus at the nozzle of each inactive inkjet in the printhead connected to the ink reservoir. The cycle of pressurization and depressurization is repeated for a predetermined number of times to replenish ink at the nozzles and reduce the likelihood of the ink at the nozzles obtaining a high viscosity.
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公开(公告)号：US08840223B2
公开(公告)日：2014-09-23
申请号：US13680579
申请日：2012-11-19
Applicant: Xerox Corporation
Inventor： Howard A. Mizes , Michael J. Levy , Joseph C. Sheflin
IPC: B41J29/393 , G06K15/02
CPC classification number: G06K15/02 , B41J29/393 , B41J2029/3935
Abstract: A method of operating a printer to detect errors in an optical sensor includes forming a printed line across a first side of a print medium and generating first image data corresponding to the printed line with the optical sensor. The optical sensor generates second image data of the second side of the print medium as the print medium passes the optical sensor a second time. A detect in the optical sensor is identified with reference to a difference between process direction alignments of the line in the first image data and the second image data.
Abstract translation: 操作打印机以检测光学传感器中的错误的方法包括在打印介质的第一侧上形成印刷线，并用光学传感器产生与印刷线对应的第一图像数据。 当打印介质第二次通过光学传感器时，光学传感器产生打印介质第二面的第二图像数据。 参考第一图像数据中的线的处理方向对齐与第二图像数据之间的差异来识别光学传感器中的检测。
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Patent Agency Ranking
公开(公告)号：US20140146102A1
公开(公告)日：2014-05-29
申请号：US13685315
申请日：2012-11-26
Applicant: XEROX CORPORATION
Inventor： Howard A. Mizes , Joseph C. Sheflin , Michael J. Levy , Charles D. Rizzolo , Stuart A. Schweid
IPC: B41J2/07
CPC classification number: B41J2/07 , B41J2/2146 , B41J11/0065
Abstract: A method of operating a printer includes identifying a region of a print medium located between marks formed by a first plurality of inkjets in the printer and an edge of the print medium. The printer activates a second plurality of inkjets to print ink drops into the region during a printing operation. The method enables full-bleed or near full-bleed printing for different media sizes.
Abstract translation: 一种操作打印机的方法包括识别位于由打印机中的第一多个喷墨喷嘴形成的标记和打印介质的边缘之间的打印介质的区域。 打印机激活第二多个喷墨打印头，以在打印操作期间将墨滴打印到该区域中。 该方法可以实现不同介质尺寸的全渗或近全渗。
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公开(公告)号：US11479034B2
公开(公告)日：2022-10-25
申请号：US17137516
申请日：2020-12-30
Applicant: Xerox Corporation
Inventor： Douglas K. Herrmann , Chu-heng Liu , Seemit Praharaj , Paul J. McConville , Jason M. LeFevre , Michael J. Levy
Abstract: According to aspects of the embodiments, there is provided a method of measuring the amount of fountain solution employed in a digital offset lithography printing system. Fountain solution thickness is measured using a glass roll at a lower temperature than the fountain solution. The lower temperature causes the fountain solution to undergo a change in state and in a solid state the fountain solution crystalizes and changes roll opacity with the thickness of the film. When radiated with a light source the opacity is continuously measured through the surface of the roller. The thickness of the crystallized fountain solution can then be determined via the opacity level increase by the crystallization and the impact to the opacity on the glass roll.
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公开(公告)号：US11318760B2
公开(公告)日：2022-05-03
申请号：US16724437
申请日：2019-12-23
Applicant: Xerox Corporation
Inventor： Linn C. Hoover , Douglas K Herrmann , Paul J. McConville , Jason M. LeFevre , Seemit Praharaj , David A. VanKouwenberg , Michael J. Levy , Chu-heng Liu , Santokh S. Badesha , Christopher Mieney , David S. Derleth
IPC: B41J11/00
Abstract: An inkjet printer includes a dryer configured to attenuate the effects of temperature differentials arising in substrates that are caused by holes in a media transport belt and a platen covering a vacuum plenum. The dryer includes a heater, a media transport belt cooler, and a media transport belt. The media transport belt is configured to move substrates past the heater after ink images have been formed on the substrates and the media transport belt cooler is positioned to remove heat energy from the media transport belt after the media transport belt has passed the heater and the substrates have separated from the media transport belt. The substrate cooler is configured to reduce a temperature of the media transport belt to a temperature that attenuates image defects arising from temperature differentials in the media transport belt when the media transport belt is opposite the heater.
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公开(公告)号：US11117764B2
公开(公告)日：2021-09-14
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
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：US20210187953A1
公开(公告)日：2021-06-24
申请号：US16719327
申请日：2019-12-18
Applicant: Xerox Corporation
Inventor： Chu-Heng Liu , Douglas K. Herrmann , Paul J. McConville , Jason M. LeFevre , Seemit Praharaj , David A. VanKouwenberg , Michael J. Levy , Linn C. Hoover , Thomas J. Wyble , John P. Meyers
Abstract: An environmental conditioner in an aqueous inkjet printer conditions the print zone in the printer so aqueous ink at the nozzles of the printheads maintains its low viscosity state and does not dry. The environmental conditioner includes a humidifying chamber having a reservoir configured to contain a volume of water, a heater configured to heat the water in the water reservoir to a predetermined temperature range, an air inlet to move air into the humidifying chamber, an air discharge configured to remove humidified air from the humidifying chamber and direct the humidified air into a space between a faceplate of a printhead and a path for media passing by the faceplate of the printhead. The chamber can include an ultrasonic atomizer to produce a moisturized mist for absorption by the heated air or wicking material to transfer moisture to the air.
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