公开(公告)号：US09774755B1

公开(公告)日：2017-09-26

申请号：US15142764

申请日：2016-04-29

Applicant: Xerox Corporation

Inventor： Sebastian Rodrigo de Echaniz ,  Michael John Wilsher ,  Paul Simon Golding ,  Benjamin Thomas Thurnell

IPC: H04N1/04 ,  H04N1/10 ,  G02F1/133 ,  G02F1/137 ,  G02F1/1334

CPC classification number: H04N1/1061 ,  G02F1/1334 ,  H04N2201/0094

Abstract: According to exemplary scanning devices herein, a platen has a sheet side and a scanner side, opposite the sheet side. A scanner is located on the scanner side of the transparent platen. The platen has a constant velocity transport (CVT) scanning position at an end of the platen. A portion of the platen, located at the CVT scanning position of the platen has integral transparent electrodes and incorporates a polymer/liquid crystal filler material that is white in a first state and transparent in a second state. A scanner is located on the scanner side of the platen. A controller is electrically connected to the electrodes. The controller controls the state of the polymer/liquid crystal filler material during scanning of a document and during white calibration of the scanner.

公开(公告)号：US20180205845A1

公开(公告)日：2018-07-19

申请号：US15407610

申请日：2017-01-17

Applicant: Xerox Corporation

Inventor： Michael John Wilsher ,  Sebastián Rodrigo de Echaniz ,  Paul Simon Golding ,  Benjamin Thomas Thurnell

IPC: H04N1/04 ,  H04N1/12

CPC classification number: H04N1/0464 ,  H04N1/122 ,  H04N1/1225 ,  H04N2201/0081 ,  H04N2201/0094

Abstract: A document scanning device includes first and second image sensors spaced along a document path and positioned to scan first and second sides of an input document. A first driven belt is configured to receive the input document directly onto a first surface of the first driven belt and transports the document past the first image sensor, where a first side of the document is scanned. A second driven belt, horizontally spaced from the first driven belt, receives the document after it has been scanned by the second image sensor and transports the document to an output. The device is suited to scanning of a variety of substrates and document sizes, such as normal, small, rigid, or delicate documents as the document path can be substantially straight and provide support for the document during scanning allowing delicate, small or rigid documents to be scanned.

公开(公告)号：US09942432B2

公开(公告)日：2018-04-10

申请号：US15240777

申请日：2016-08-18

Applicant: Xerox Corporation

Inventor： Sebastián Rodrigo de Echaniz ,  Michael John Wilsher ,  Paul Simon Golding ,  Benjamin Thomas Thurnell

IPC: H04N1/00 ,  G02F1/1334 ,  H04N1/10 ,  G02F1/163

CPC classification number: H04N1/00912 ,  G02F1/1334 ,  G02F1/163 ,  G02F2201/44 ,  H04N1/0032 ,  H04N1/1061 ,  H04N2201/0094 ,  H04N2201/0422 ,  H04N2201/0458

Abstract: A scanning device includes a transparent platen which receives a sheet to be scanned. A backing assembly is spaced from the platen by the sheet during scanning. The backing assembly includes a backing plate of a fixed color and an electrochromic layer intermediate the backing plate and the platen. The electrochromic layer has a first state in which the electrochromic layer is opaque and has a different color from the fixed color, and a second state, in which the electrochromic layer is transparent to expose the backing plate through it. A sensor is positioned to acquire an image of the sheet based on light passing through the platen. A controller selectively applies a voltage across the electrochromic layer to change the electrochromic layer between the first and second states.

公开(公告)号：US09247077B2

公开(公告)日：2016-01-26

申请号：US14086812

申请日：2013-11-21

Applicant: XEROX CORPORATION

Inventor： Paul Simon Golding ,  Michael John Wilsher

IPC: H04N1/04 ,  H04N1/00

CPC classification number: H04N1/00087 ,  H04N1/00018 ,  H04N1/00034 ,  H04N1/00047 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/0057 ,  H04N1/1017 ,  H04N2201/0003 ,  H04N2201/0093

Abstract: The present application discloses methods and systems for calibrating a scanning system. The scanning system comprises a light-transmissive platen defining a top surface and a bottom surface, a controller, a document handler, and a scanner bar for recording image data from documents at various document heights. In one embodiment, the calibration method proposes the use of two calibration strips in a document scanning system that has both platen scanning and Constant Velocity Transport (CVT) scanning modes. In another embodiment, a scanner is disclosed with a dual calibration target or a single calibration target that is manufactured with two (2) different heights to correct the illumination profile at the CVT scanning height or at the platen scanning height.

Abstract translation: 本申请公开了用于校准扫描系统的方法和系统。 扫描系统包括限定顶表面和底表面的透光压板，控制器，文件处理器和用于从各种文件高度的文档记录图像数据的扫描器条。 在一个实施例中，校准方法提出了在具有压板扫描和恒定速度传输（CVT）扫描模式的文档扫描系统中使用两个校准条。 在另一个实施例中，公开了一种具有双校准目标或单个校准目标的扫描器，其被制造成具有两（2）个不同的高度，以校正CVT扫描高度处或台板扫描高度处的照明轮廓。