公开(公告)号：US09079440B1

公开(公告)日：2015-07-14

申请号：US14231251

申请日：2014-03-31

Applicant: Xerox Corporation

Inventor： Paul S. Bonino ,  Frank B. Tamarez Gomez ,  Raymond J. Clark ,  Timothy P. Foley

IPC: B41J29/393

CPC classification number: B41J29/393 ,  B41J2/175 ,  B41J29/02

Abstract: An apparatus detects inoperative inkjets during printing. The apparatus includes a light transmitting substrate onto which a test pattern of material is ejected. A light source directs light into the substrate and an optical sensor generates image data of a surface of the substrate. Light propagates through the substrate unless it reaches a position where the material is present on the surface. Thus, the material emits light so a contrast exists between the surface of the substrate and the material emitting light. By comparing the image data to the positions of the light emitting areas on the surface, inoperative inkjets are detected.

Abstract translation: 一种装置在打印期间检测不起作用的喷墨。 该装置包括一个透光基板，材料的测试图案被弹出到该透光基板上。 光源将光引入基板，并且光学传感器产生基板的表面的图像数据。 光通过基板传播，除非它到达材料存在于表面上的位置。 因此，材料发光，因此在基板的表面和发射光的材料之间存在对比度。 通过将图像数据与表面上的发光区域的位置进行比较，检测不起作用的喷墨。

公开(公告)号：US20140210898A1

公开(公告)日：2014-07-31

申请号：US13754262

申请日：2013-01-30

Applicant: XEROX CORPORATION

Inventor： David A. Mantell ,  David J. Metcalfe ,  Martin L. Frachioni ,  Raymond J. Clark

IPC: B41J2/125

CPC classification number: B41J2/17566 ,  B41J2002/17569

Abstract: An inkjet printer estimates ink usage in the printer with reference to image pixels and a history of inkjet firing for each inkjet. The printer includes an apparatus that generates an ink mass for each image pixel with reference to the image pixel and a predetermined number of previously ejected image pixels and identifies a total ink mass measurement for a printhead with reference to the ink masses generated for the image pixels of an image to be printed by the inkjet printer.

Abstract translation: 喷墨打印机参照图像像素和每种喷墨的喷墨烧写历史来估计打印机中的墨水使用量。 该打印机包括参考图像像素和预定数量的先前喷射的图像像素产生每个图像像素的油墨质量的装置，并参照为图像像素产生的油墨质量来识别打印头的总油墨质量测量 由喷墨打印机打印的图像。

公开(公告)号：US10919310B1

公开(公告)日：2021-02-16

申请号：US16704370

申请日：2019-12-05

Applicant: Xerox Corporation

Inventor： Stuart A. Schweid ,  Raymond J. Clark ,  David J. Metcalfe

IPC: B41J2/21 ,  B41J29/393 ,  B41J2/01 ,  B41J2/36

Abstract: A method of printer operation identifies inkjets to operate in each scanline to eject sneeze drops or, in an alternative approach, identifies the cross-process direction scanlines within a page to be printed by the printer where each inkjet ejects sneeze drops. The methods use a binary grayscale code counter that generates a sequence of binary grayscale code numbers and every other output of the sequence is bit reversed to spread the sneeze drops over the pages of the printer output so the sneeze drops are not perceptible to a human observer.

公开(公告)号：US09561644B1

公开(公告)日：2017-02-07

申请号：US15074137

申请日：2016-03-18

Applicant: Xerox Corporation

Inventor： Raymond J. Clark ,  Roger L. Triplett ,  Stuart A. Schweid ,  Martin L. Frachioni

IPC: B41J2/045 ,  B41J2/21

CPC classification number: B41J2/2139 ,  B41J2/2142 ,  B41J2/2146

Abstract: A method and system compensates for malfunctioning inkjets using contone values for an image prior to the contone values being rendered for printing of the image. The method generates contone values for color space components in a compensation level for each malfunctioning inkjet. The contone values in each compensation level are modified with reference to a profile selected for each malfunctioning inkjet and with reference to the modification of the contone values in the vicinity of each malfunctioning with the compensative level. The modified contone values of each compensation level are merged with the contone values in the vicinity of each malfunctioning inkjet. The contone values are then rendered and used to operate inkjets for forming an ink image on an ink receiving member.

Abstract translation: 一种方法和系统在渲染图像的连续色调值之前，使用图像的连续色调值来补偿出现故障的喷墨打印机。 该方法为每个故障喷墨的补偿级别生成颜色空间分量的连续色值。 参考每个故障喷墨选择的轮廓，并参照每次故障补偿水平附近的连续失真值的修改，修改每个补偿级别中的连续色调值。 每个补偿水平的修改的连续色调值与每个故障喷墨机附近的连续色调值合并。 然后将连续色调值渲染并用于操作用于在油墨接收构件上形成油墨图像的喷墨头。

公开(公告)号：US09302519B1

公开(公告)日：2016-04-05

申请号：US14571880

申请日：2014-12-16

Applicant: Xerox Corporation

Inventor： Raymond J. Clark ,  Frank B. Tamarez Gomez ,  Timothy P. Foley ,  Paul S. Bonino

IPC: B41J29/393 ,  B41J2/045 ,  B41J2/21 ,  B33Y30/00

CPC classification number: B41J2/2142 ,  B29C64/112 ,  B29C64/386 ,  B33Y30/00 ,  B33Y50/02 ,  B41J2/16579 ,  B41J2/17509

Abstract: A printer detects malfunctioning ejectors during printing of three-dimensional objects or two-dimensional printed matter. The printer operates the printhead or printheads in the printer to form convex drops of material on a substrate. A camera is positioned to minimize light reflections from the substrate into the camera. The camera is configured to generate image data of the light reflected from the substrate and specularly from the convex drops on the substrate. A controller analyzes the image data to identify malfunctioning inkjets.

Abstract translation: 打印机在打印三维物体或二维打印物时，会发现打印机出现故障。 打印机操作打印机中的打印头或打印头，以在基板上形成凸起的液滴材料。 定位相机以最小化从基板到相机的光反射。 相机被配置为生成从基板反射的光的镜像数据，并且从镜面上产生来自基板上的凸起滴的图像数据。 控制器分析图像数据以识别故障喷墨。

公开(公告)号：US09090113B1

公开(公告)日：2015-07-28

申请号：US14231266

申请日：2014-03-31

Applicant: Xerox Corporation

Inventor： Timothy P. Foley ,  Paul S. Bonino ,  Raymond J. Clark ,  Frank B. Tamarez Gomez

IPC: B41J29/393 ,  B33Y30/00

CPC classification number: B41J29/393 ,  B29C64/112 ,  B29C64/386 ,  B33Y30/00 ,  B33Y50/02 ,  B41J2/175 ,  B41J29/02

Abstract: An apparatus detects inoperative ejectors during printing of three-dimensional objects. The apparatus operates the printhead or printheads in the printer to form test pattern on a substrate. A pneumatic sensor directs a pneumatic stream towards substrate and measures the pneumatic impedance. The impedance differences between area where the test pattern is formed and bare areas are analyzed to identify inoperative inkjets.

Abstract translation: 一种装置在打印三维物体期间检测不起作用的喷射器。 该设备操作打印机中的打印头或打印头，以在基板上形成测试图案。 气动传感器将气流引向衬底并测量气动阻抗。 分析形成测试图案的区域与裸露区域之间的阻抗差异，以识别不工作的喷墨。

公开(公告)号：US08807695B1

公开(公告)日：2014-08-19

申请号：US13754262

申请日：2013-01-30

Applicant: Xerox Corporation

Inventor： David A. Mantell ,  David J. Metcalfe ,  Martin L. Frachioni ,  Raymond J. Clark

IPC: B41J29/393 ,  B41J2/125

CPC classification number: B41J2/17566 ,  B41J2002/17569

Abstract: An inkjet printer estimates ink usage in the printer with reference to image pixels and a history of inkjet firing for each inkjet. The printer includes an apparatus that generates an ink mass for each image pixel with reference to the image pixel and a predetermined number of previously ejected image pixels and identifies a total ink mass measurement for a printhead with reference to the ink masses generated for the image pixels of an image to be printed by the inkjet printer.

Abstract translation: 喷墨打印机参照图像像素和每种喷墨的喷墨烧写历史来估计打印机中的墨水使用量。 该打印机包括参考图像像素和预定数量的先前喷射的图像像素产生每个图像像素的油墨质量的装置，并参照为图像像素产生的油墨质量来识别打印头的总油墨质量测量 由喷墨打印机打印的图像。