公开(公告)号：US20220371348A1

公开(公告)日：2022-11-24

申请号：US17328463

申请日：2021-05-24

Applicant: Xerox Corporation

Inventor： Seemit Praharaj ,  Thomas J. Wyble ,  Paul J. McConville

IPC: B41J29/393

Abstract: A method analyzes image data of a test pattern printed on an image receiving member by a printer to identify split inkjets in the printheads of the printer. The test pattern is formed by operating each inkjet of a printhead to form a dash and the areas of the dashes are compared to an average dash area to identify split inkjets. Firing signal parameters for the split inkjets are adjusted and subsequent firing signals are generated using the adjusted parameters. Image data of the pixels formed by the split inkjets are analyzed after the split inkjets have been operated using the adjusted firing signal parameters. If the pixel size for a split inkjets indicates that the split inkjet has been remediated, then the firing signal parameters are returned to their nominal values.

公开(公告)号：US11383525B2

公开(公告)日：2022-07-12

申请号：US16897941

申请日：2020-06-10

Applicant: Xerox Corporation

Inventor： Seemit Praharaj ,  Paul J. McConville ,  Jason M. LeFevre ,  Michael J. Levy ,  Thomas J. Wyble

IPC: B41J2/175 ,  B41J2/165

Abstract: A purge cycle is performed with an ink delivery system of an inkjet printer by applying a pressure pulse to a printhead in the printer that is substantially shorter than pressure pulses previously used. A pressure at a predetermined threshold is generated behind a valve and then release to the printhead. The duration of the pressure application is in a range of about 150 milliseconds to about 250 milliseconds. This pressure pulse substantially reduces the amount of ink emitted during the purge. A bidirectional wipe of the printhead face is effective for restoring inkjets in the printhead even though the amount of emitted ink is substantially reduced.

公开(公告)号：US09070294B2

公开(公告)日：2015-06-30

申请号：US13895962

申请日：2013-05-16

Applicant: Xerox Corporation

Inventor： Thomas J. Wyble ,  Steven R. Moore

IPC: G08G1/01 ,  G08G1/09 ,  G08G1/095 ,  G06F17/10 ,  G08G1/0967 ,  G08G1/0962 ,  G08G1/16

CPC classification number: G08G1/096783 ,  G08G1/09623 ,  G08G1/096716 ,  G08G1/096741 ,  G08G1/164

Abstract: Methods and systems for preventing collisions between vehicles and moving hazards include the use of active signs, a network of sensors, and a controller. Such sensors can be placed adjacent to a roadway and are used to detect the presence of animals. The active signs display a local speed limit. The controller accepts the sensor signals as input and outputs display commands to the active signs. The controller maintains a rolling window of recent detections in histogram form. The recent data, together with a control law specified by the municipal authority, can be used to specify updated local speed limits to influence driver behavior.

Abstract translation: 用于防止车辆和移动危险之间的碰撞的方法和系统包括使用活动标志，传感器网络和控制器。 这种传感器可以放置在巷道附近，并用于检测动物的存在。 活动标志显示本地限速。 控制器接受传感器信号作为输入，并将显示命令输出到有效标志。 控制器以直方图形式保持最近检测的滚动窗口。 最近的数据以及市政当局规定的控制法可用于指定更新的本地速度限制以影响驾驶员的行为。

公开(公告)号：US11878349B2

公开(公告)日：2024-01-23

申请号：US17393115

申请日：2021-08-03

Applicant: Xerox Corporation

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

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

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

Abstract: 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：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

IPC: B41J2/17 ,  B41J2/045 ,  B41J2/165

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.

公开(公告)号：US20210187948A1

公开(公告)日：2021-06-24

申请号：US16724459

申请日：2019-12-23

Applicant: Xerox Corporation

Inventor： Seemit Praharaj ,  Douglas K. Herrmann ,  Paul J. McConville ,  Jason M. LeFevre ,  Chu-heng Liu ,  David A. VanKouwenberg ,  Michael J. Levy ,  Linn C. Hoover ,  Thomas J. Wyble ,  John P. Meyers

IPC: B41J2/125 ,  B41J2/165 ,  B41J29/393

Abstract: A directionality detector is configured for use in an inkjet printer to attenuate the effects of ink drying in the nozzles of a printhead during printing operations. The directionality detector includes an optical sensor that generates image data of a test pattern formed on media by the printer, a diffuser that emits humidified air toward the media before the media is printed, and a controller operatively connected to the optical sensor and diffuser. The controller is configured compare the image data of the test pattern to stored image data of the test pattern printed at a previous time and determine whether any difference between the two images is greater than a predetermined threshold. The controller then operates the diffuser to direct humidified air toward the media passing the diffuser using the differences between the stored image data of the test pattern and the image data of the test pattern.

公开(公告)号：US09073327B1

公开(公告)日：2015-07-07

申请号：US14180386

申请日：2014-02-14

Applicant: Xerox Corporation

Inventor： Thomas J. Wyble

IPC: B41J2/165

CPC classification number: B41J2/16532 ,  B41J2/16508 ,  B41J2/1652 ,  B41J2/16523 ,  B41J2/16538 ,  B41J2/16585 ,  B41J2/16588 ,  B41J2002/16591

Abstract: A printer includes a printhead cleaning system that enables improved cleaning of the printhead and reduces nozzle contamination. The printer includes a pair of parallel walls and an elongated member extending through at least one of the walls. The elongated member is connected to a vacuum source and has a slit positioned between the pair of walls. A controller is operatively connected to the vacuum source and to an actuator, and operates the actuator to move a printhead into contact with the pair of walls to place a face plate of the printhead opposite the slit. The controller further operates the vacuum source to generate a vacuum in the elongated member to pull air into the elongated member when the printhead is opposite the slit.

Abstract translation: 打印机包括打印头清洁系统，其能够改进打印头的清洁并减少喷嘴污染。 打印机包括一对平行的壁和延伸穿过至少一个壁的细长构件。 细长构件连接到真空源并且具有位于该对壁之间的狭缝。 控制器可操作地连接到真空源和致动器，并且操作致动器以将打印头移动到与该对壁接触，以将打印头的面板放置在与狭缝相对的位置。 当打印头与狭缝相对时，控制器还操作真空源以在细长构件中产生真空以将空气拉入细长构件。

公开(公告)号：US20210387459A1

公开(公告)日：2021-12-16

申请号：US16897941

申请日：2020-06-10

Applicant: Xerox Corporation

Inventor： Seemit Praharaj ,  Paul J. McConville ,  Jason M. LeFevre ,  Michael J. Levy ,  Thomas J. Wyble

IPC: B41J2/175 ,  B41J2/165

Abstract: A purge cycle is performed with an ink delivery system of an inkjet printer by applying a pressure pulse to a printhead in the printer that is substantially shorter than pressure pulses previously used. A pressure at a predetermined threshold is generated behind a valve and then release to the printhead. The duration of the pressure application is in a range of about 150 milliseconds to about 250 milliseconds. This pressure pulse substantially reduces the amount of ink emitted during the purge. A bidirectional wipe of the printhead face is effective for restoring inkjets in the printhead even though the amount of emitted ink is substantially reduced.

公开(公告)号：US11059289B1

公开(公告)日：2021-07-13

申请号：US16724459

申请日：2019-12-23

Applicant: Xerox Corporation

Inventor： Seemit Praharaj ,  Douglas K. Herrmann ,  Paul J. McConville ,  Jason M. LeFevre ,  Chu-heng Liu ,  David A. VanKouwenberg ,  Michael J. Levy ,  Linn C. Hoover ,  Thomas J. Wyble ,  John P. Meyers

IPC: B41J2/125 ,  B41J29/393 ,  B41J2/165

Abstract: A directionality detector is configured for use in an inkjet printer to attenuate the effects of ink drying in the nozzles of a printhead during printing operations. The directionality detector includes an optical sensor that generates image data of a test pattern formed on media by the printer, a diffuser that emits humidified air toward the media before the media is printed, and a controller operatively connected to the optical sensor and diffuser. The controller is configured compare the image data of the test pattern to stored image data of the test pattern printed at a previous time and determine whether any difference between the two images is greater than a predetermined threshold. The controller then operates the diffuser to direct humidified air toward the media passing the diffuser using the differences between the stored image data of the test pattern and the image data of the test pattern.

公开(公告)号：US20160016374A1

公开(公告)日：2016-01-21

申请号：US14868686

申请日：2015-09-29

Applicant: Xerox Corporation

Inventor： Linn C. Hoover ,  William J. Nowak ,  Robert A. Clark ,  Peter J. Knausdorf ,  Thomas J. Wyble

IPC: B31B1/14 ,  B31B1/56

CPC classification number: B31B50/56 ,  B31B50/00 ,  B31B50/066 ,  B31B50/20 ,  B31B50/25 ,  B31B2100/00 ,  B31B2100/0022 ,  B31B2110/35

Abstract: A personalized packaging production system includes an in-feed tray, an out-feed tray, a cutting table disposed intermediate the in-feed tray and the out-feed tray and an interchangeable cutting/creasing assembly. A sheet feeder is positioned between the in-feed tray and the cutting table to feed media sheets from the in-feed tray to the cutting table, and an exit nip is positioned between the out-feed tray and the cutting table to remove media sheets from the cutting table to the out-feed tray.