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公开(公告)号：US20240253363A1
公开(公告)日：2024-08-01
申请号：US18163154
申请日：2023-02-01
申请人： Xerox Corporation
IPC分类号： B41J2/21
CPC分类号： B41J2/2132
摘要： An inkjet printer prints on a first side of a media sheet less than all of the color separations in an image, generates a first set of image data of the printed color separations to identify image features, returns the partially printed media sheet to a position that precedes the print zone in the printer, generates a second set of image data of the partially printed media sheet before it reenters the print zone to identify the image features, compares the positions of the image features in the first set of image data to the positions of the image features in the second set of image data to register one or more color separations remaining to be printed with the color separations printed on the first side of the media sheet, and prints the remaining registered color separations on the first side of the partially printed media sheet.
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2.发明公开公开(公告)号：US20240123501A1
公开(公告)日：2024-04-18
申请号：US18047359
申请日：2022-10-18
申请人： XEROX CORPORATION
CPC分类号： B22F10/22 , B22F10/322 , B22F12/30 , B22F12/50 , B22F12/70 , B33Y10/00 , B33Y30/00 , B22F2201/11 , B22F2301/052
摘要： A method of forming a three-dimensional printed part is disclosed, including ejecting a drop of print material from an ejector for a printing system in a substantially vertical trajectory, directing a stream of inert gas toward the drop of print material from a first direction, and diverting the drop of print material from the substantially vertical trajectory prior to the drop of print material landing onto a surface. The method includes directing a stream of inert gas toward the drop of print material from other directions. A printing system includes at least a first channel oriented in a first plane parallel to the substrate and positioned between the substrate and the ejector, and a gas supply connected to the first channel.
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3.发明公开公开(公告)号：US20230398778A1
公开(公告)日：2023-12-14
申请号：US17806212
申请日：2022-06-09
申请人： Xerox Corporation
CPC分类号： B41J2/125 , G06T2207/30144 , G06T7/13 , G06T7/0004
摘要： A method of operating a printer identifies image areas and image features in ink image content data that are likely to produce ink blur within an ink image. The ink image content data for these areas and features is modified to attenuate the appearance of ink blur. The image areas identified as being likely to produce ink blur are the trailing edge and the side edges of the ink image content data. The modification of the ink image content data for the features and predetermined areas improves the quality of the printed ink image.
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公开(公告)号：US20230286275A1
公开(公告)日：2023-09-14
申请号：US18317649
申请日：2023-05-15
申请人： Xerox Corporation
发明人： Varun Sambhy , Jason M. LeFevre , Seemit Praharaj , Chu-Heng Liu , Douglas K. Herrmann , Linn C. Hoover
IPC分类号： B41J2/165
CPC分类号： B41J2/165 , B41J2/16579 , B41J2/14153
摘要： A method of operating an inkjet printer operates solvent vapor generators that direct two flows of solvent vapor towards media on each side of each printhead in the process direction. The solvent vapor attenuates the evaporation of ink solvent from ink drops on the nozzle plates or from the ink in the nozzles of the printheads. Thus, the ink on the nozzle plates and in the nozzles does not dry out and the operational status of the inkjets is preserved.
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公开(公告)号：US11654482B2
公开(公告)日：2023-05-23
申请号：US17367991
申请日：2021-07-06
申请人： XEROX CORPORATION
CPC分类号： B22D46/00 , B22D23/003 , B33Y10/00 , B33Y50/02
摘要： A method of controlling sensing level in a liquid ejector is disclosed. The method includes filling a reservoir in communication with a liquid ejector with a printing material to a first level set point, receiving a drop out signal from a laser-based level sensor that reads from a surface of a melt pool in the reservoir, pausing an operation of the liquid ejector, adjusting the printing material level set point to a second level set point of printing material in reservoir that is higher than the first level set point, increasing a quantity of printing material in the reservoir to fill the reservoir to the second level set point, and resuming the operation of the liquid ejector.
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公开(公告)号：US20230063103A1
公开(公告)日：2023-03-02
申请号：US17412399
申请日：2021-08-26
申请人： Xerox Corporation
IPC分类号： B22D23/00 , B22F10/22 , B22F12/30 , B22F12/41 , B22F12/53 , B22F12/70 , B22F10/36 , B33Y10/00 , B33Y30/00
摘要： A three-dimensional (3D) metal object manufacturing apparatus is equipped with a movable directed energy source to melt hardened metal drops and form an oxidation layer. A metal support structure can be formed over the oxidation layer, an object feature can be formed over the oxidation layer, or both a metal support structure and an object feature can be formed over oxidation layers located at opposite sides of a metal support structure. The oxidation layers weakly attach the metal support structure to the object feature supported by the metal support structure so the support structure can be easily removed after manufacture of the object is complete.
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公开(公告)号：US20230037539A1
公开(公告)日：2023-02-09
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
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.
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公开(公告)号：US20230015142A1
公开(公告)日：2023-01-19
申请号：US17374762
申请日：2021-07-13
申请人： XEROX CORPORATION
发明人： Linn C. Hoover , Joseph C. Sheflin , Jason M. LeFevre , Seemit Praharaj , David Alan Vankouwenberg , Chu-Heng Liu , Douglas K. Herrmann, JR.
摘要： A dross extraction system for a printer is disclosed, which includes an ejector defining an inner cavity associated therewith, the inner cavity retaining a liquid printing material. The dross extraction system also includes a first inlet coupled to the inner cavity of the ejector, a probe external to the ejector, which is selectably positionable to contact the liquid printing material to attract dross thereto, thereby extracting dross from the liquid printing material when the probe is withdrawn from the liquid printing material. A method of extracting dross from a metal jetting printer is also disclosed, which includes pausing an operation of the metal jetting printer, advancing a probe into a melt pool within a nozzle pump reservoir in the metal jetting printer, extracting dross from the metal printing material and onto the probe, retracting the probe from the nozzle pump reservoir, and resuming the operation of the metal jetting printer.
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公开(公告)号：US20230008592A1
公开(公告)日：2023-01-12
申请号：US17367991
申请日：2021-07-06
申请人： XEROX CORPORATION
摘要： A method of controlling sensing level in a liquid ejector is disclosed. The method includes filling a reservoir in communication with a liquid ejector with a printing material to a first level set point, receiving a drop out signal from a laser-based level sensor that reads from a surface of a melt pool in the reservoir, pausing an operation of the liquid ejector, adjusting the printing material level set point to a second level set point of printing material in reservoir that is higher than the first level set point, increasing a quantity of printing material in the reservoir to fill the reservoir to the second level set point, and resuming the operation of the liquid ejector.
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公开(公告)号：US11547771B2
公开(公告)日：2023-01-10
申请号：US17177300
申请日：2021-02-17
申请人： Xerox Corporation
发明人： Seemit Praharaj , Douglas K. Herrmann , Chu-Heng Liu , Paul J. McConville , Jason M. LeFevre , Linn C. Hoover , David A. VanKouwenberg
摘要： An apparatus includes, among other components, a frame adapted to be connected to the exterior surface of a device that has a touchscreen. A retractable cover is operatively connected to the frame. The size of the retractable cover is equal to at least the size of the touchscreen, and the retractable cover is positioned to extend so as to cover the touchscreen. At least one ultraviolet light is also operatively connected to the frame. The ultraviolet light is positioned to direct ultraviolet lighting toward the touchscreen when the retractable cover extends to cover the touchscreen.
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