公开(公告)号：US09643398B1

公开(公告)日：2017-05-09

申请号：US14967134

申请日：2015-12-11

Applicant: XEROX CORPORATION

Inventor： Peter J. Knausdorf ,  Jack T. Lestrange

IPC: B41F7/24

CPC classification number: G03G15/1625 ,  G03G2215/00523

Abstract: An improved apparatus and method for printing directly onto Infra-Red (IR) transparent material (print media) such as Mylar using a method that is capable of using medium to high viscosity materials such as those needed for printed electronics. The proposed method would be able to print with variable data/imaging. A proposed method uses an IR receptor of which a print media is placed or passed over. Prior to irradiation the print media is coated with a sub-micron layer of dampening solution such as silicone oil that is then selectively evaporated off via a laser imaging device which passes IR energy thorough the dampening solution, print media and onto the receptor to evaporate dampening solution in areas that will be inked.

公开(公告)号：US11801693B2

公开(公告)日：2023-10-31

申请号：US17217388

申请日：2021-03-30

Applicant: XEROX CORPORATION

Inventor： Peter John Knausdorf ,  Anthony Salvatore Condello ,  Jack T. Lestrange ,  Palghat S. Ramesh ,  Joseph C. Sheflin

IPC: B41J11/00

CPC classification number: B41J11/0085

Abstract: A printing system comprises an ink deposition assembly, a media transport device, and an airflow control system. The ink deposition assembly comprises a printhead to eject ink through a carrier plate opening in a carrier plate. The media transport device holds a print medium against a movable support surface by vacuum suction and transports the print media through a deposition region. The airflow control system comprises a baffle that is movable between an upstream-blocking configuration and a downstream-blocking configuration, and an actuator configured to move the baffle. In the upstream-blocking configuration the baffle blocks airflow through an upstream side of the printhead opening while allowing airflow through a downstream side of the printhead opening. In the downstream-blocking configuration the baffle blocks airflow through the downstream side of the printhead opening while allowing airflow through the upstream side of the printhead opening.

公开(公告)号：US11766874B2

公开(公告)日：2023-09-26

申请号：US17531098

申请日：2021-11-19

Applicant: Xerox Corporation

Inventor： Peter J. Knausdorf ,  Anthony S. Condello ,  Jack T. Lestrange ,  Palghat S. Ramesh ,  Joseph C. Sheflin

IPC: B41J2/47 ,  G02B26/08 ,  G02B7/18 ,  B41M5/26

CPC classification number: B41J2/471 ,  B41M5/267 ,  G02B7/1815 ,  G02B26/0833

Abstract: Apparatus and method for using a line laser (LL) to quickly mark a substrate or media by utilizing a laser additive on/within the substrate/media, which greatly reduces the power requirement for marking the substrate/media. The combination of the LL wide swath (>305 mm) and the improved media/surface sensitivity to laser wavelength allows the LL marking system to achieve faster marking than other systems. The LL is mounted over a transport which transports the sensitized substrate/media past the LL for marking. The desired image is projected from the LL line by line in synch with the moving media and once the media passes the beam path of the LL, marking is complete. In this case, the media has been physically-altered via the heat generated by the LL interacting with the photosensitized media and is permanent. A second method would use a photosensitizing agent coated on top of the media to be marked.

公开(公告)号：US11376840B2

公开(公告)日：2022-07-05

申请号：US16913302

申请日：2020-06-26

Applicant: Xerox Corporation

Inventor： Joseph C. Sheflin ,  Jack T. Lestrange ,  Anthony S. Condello ,  Palghat S. Ramesh ,  Brian M. Balthasar

IPC: B41F33/00 ,  B41F31/13 ,  B41F31/02

Abstract: Examples of the preferred embodiments use printed content (e.g., halftones, difference in grayscale or darkness) to determine thickness of fountain solution applied by a fountain solution applicator on an imaging member surface and/or determine image forming device real-time image forming modifications for subsequent printings. For example, in real-time during the printing of a print job, a sensor may measure halftones or grayscale differences between printed content and non-printed content of a current printing on print substrate. Based on this measurement of printed content output from the image forming device, the image forming device may adjust image forming (e.g., fountain solution deposition flow rate, imaging member rotation speed) to reach or maintain a preferred fountain solution thickness on the imaging member surface for subsequent (e.g., next) printings of the print job.

公开(公告)号：US20180281467A1

公开(公告)日：2018-10-04

申请号：US15472727

申请日：2017-03-29

Applicant: Xerox Corporation

Inventor： Anthony S. Condello ,  Jack T. Lestrange

IPC: B41J11/00

CPC classification number: B41J11/002 ,  B41J3/407 ,  B41J3/4078 ,  B41J2002/012

Abstract: Backing material is passed by a first heater to pre-heat the backing material. The backing material is then passed by a printing engine to print marking material on the backing material, and passed by a first light source to apply ultra-violet (UV) light to the marking material printed on the backing material, to partially cure the marking material. Further, the backing material is passed by a container to expose the partially cured marking material to adhesive particles to cause the adhesive particles to adhere only to the marking material. The backing material is passed by a second light source to apply additional UV light to the marking material partially cured on the backing material to fully cure the marking material. Finally, the backing material is passed by a second heater to melt the adhesive particles that are adhered to the marking material on the backing material.

公开(公告)号：US11900588B2

公开(公告)日：2024-02-13

申请号：US17336729

申请日：2021-06-02

Applicant: Xerox Corporation

Inventor： Joseph C. Sheflin ,  Jack T. Lestrange ,  Palghat S. Ramesh

IPC: G06T7/00 ,  G03F7/00 ,  G01J5/00

CPC classification number: G06T7/001 ,  G01J5/00 ,  G03F7/7085 ,  G03F7/70516 ,  G01J2005/0077 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30144

Abstract: An image based correction system compensates for the image quality artifacts induced by thermal ghosting on evolving imaging member surfaces. With thermal ghosting directly tied to previous image content, a feed forward system determines thermal ghosting artifacts based on images previously rendered and generates an open loop gray-level correction to a current image that mitigates undesirable ghosting. For example, the correction system compensates for the thermal ghosting by making the current image “lighter” in areas that will be imaged onto warmer blanket regions, thereby cancelling out TRC differences between different temperature regions. A temperature sensor is used to measure the temperature of the imaging blanket due to the stresses induced by the image. This data is used to learn the parameters of the temperature model periodically during operation, and used in subsequent corrections to mitigate thermal ghosting in spite of changes in blanket properties over use and time.

公开(公告)号：US11577503B2

公开(公告)日：2023-02-14

申请号：US17177262

申请日：2021-02-17

Applicant: Xerox Corporation

Inventor： Jack T. Lestrange ,  Joseph C. Sheflin ,  Palghat S. Ramesh ,  Anthony S. Condello ,  Brian M. Balthasar ,  Seemit Praharaj ,  Chu-heng Liu ,  Paul J. Mcconville ,  Douglas K. Herrmann ,  Jason M. Lefevre

IPC: B41F33/00 ,  B41M1/06 ,  G01F1/28 ,  G01N33/32

Abstract: A drag force sensor on a fountain solution carrier roller surface measures drag force of a fountain solution layer on the fountain solution carrier roller surface in real-time during a printing operation. The measured drag force 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 a printing operation to reach a desired uniform thickness for the printing. This fountain solution monitoring system may be fully automated.

公开(公告)号：US10737483B2

公开(公告)日：2020-08-11

申请号：US15898721

申请日：2018-02-19

Applicant: Xerox Corporation ,  Palo Alto Research Center Incorporated

Inventor： Jack T. Lestrange ,  Gregory B. Anderson ,  Peter J. Knausdorf ,  Joanne L. Lee

IPC: B41F13/193 ,  B41F31/04 ,  B41F31/08 ,  B41F31/20 ,  B41F7/04 ,  B41F7/20 ,  B41F31/02 ,  B41F31/18 ,  B41F31/06 ,  B41F9/06

Abstract: In a digital inking system having an anilox member that carries a patterned metered layer of ink to a digital imaging member, and a doctor blade that removes excess ink from the surface of the anilox member resulting in the patterned metered layer, an overfill form roller in rolling contact with the anilox member adds an overcoat layer of ink on the patterned metered layer for transfer of both layers of ink to the digital imaging member. The overcoat layer of ink uniformly covers all regions of the anilox member and the mattered metered layer of ink, including lands of the anilox cell walls to make the combined layers of ink pattern-free.

公开(公告)号：US10442214B2

公开(公告)日：2019-10-15

申请号：US16189153

申请日：2018-11-13

Applicant: XEROX CORPORATION

Inventor： Anthony S. Condello ,  Paul J. McConville ,  Jack T. Lestrange ,  Chu-Heng Liu

IPC: B41J11/00 ,  B41J2/005

Abstract: A solid blanket receives a flood layer of very thin (e.g., about 10 μm or less) image receiving UV curable coating, which may be a clear, substantially clear, or tinted UV ink. A lower viscosity digital ink image may then be printed on top of the flood layer, for example by jetting UV ink on top of the flood layer. The lower viscosity UV digital ink sits on top of the thicker UV curable coating and maintains its location by surface tension interaction with the coating. The combination of ink and coating is then partially cured to a tacky state at which point it is transferred to print media via a conformable pressure nip. Since the lower viscosity jetted inks are not responsible for directly wetting the media, media latitude widens greatly. Further, no dampening fluid or fountain solution is needed to aid the transfer or the imaging.

公开(公告)号：US11868058B2

公开(公告)日：2024-01-09

申请号：US17490450

申请日：2021-09-30

Applicant: Xerox Corporation

Inventor： Patricia J. Donaldson ,  Jack T. Lestrange

IPC: G03G15/01 ,  G03G15/00 ,  B41J2/005

CPC classification number: G03G15/0194 ,  G03G15/0131 ,  G03G15/5058 ,  B41J2/0057 ,  G03G2215/0158

Abstract: An apparatus and method for compensating for variation of the image placement for each color station in an intermediate transfer drum system. A sensor detects the image placed by the previous station and triggers the imaging on the drum such that it properly registered to the previous image. However, the variation of the drum's radius results in runout which creates an error in the image placement, since the surface drum travel will be larger or smaller than expected. The method to correct for a lead edge offset for radial runout involves dividing the drum into regions and calculating an offset center of each region. As the drum transitions from region to region the offset value is updated to determine when to start imaging for proper placement on the sheet. The offset can be derived from the image runout to find the distance traveled from the transfer point or can be measured directly from color-to-color registration variation.