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    INK JET APPARATUS
    32.
    发明专利
    INK JET APPARATUS 未知

    公开(公告)号：CA2486454A1

    公开(公告)日：2005-05-05

    申请号：CA2486454

    申请日：2004-11-01

    Applicant: XEROX CORP

    Inventor： NYSTROM PETER J ,  SCHMACHTENBERG RICHARD III ,  ANDREWS JOHN R ,  BURKE CATHIE J

    IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14

    Abstract: A drop emitting apparatus including a diaphragm layer disposed on a fluid channel layer, a roughened bonding region formed on a surface of the diaphragm layer, a thin film circuit having conformal raised contact regions disposed on the bonding region, and a plurality of electromechanical transducers adhesively attached to the raised contact regions and electrically connected to the conformal raised contact regions by asperity contacts formed between the conformal raised contact regions and the electromechanical transducers.

    34.
    发明专利
    未知

    公开(公告)号：DE69319522D1

    公开(公告)日：1998-08-13

    申请号：DE69319522

    申请日：1993-09-20

    Applicant: XEROX CORP

    Inventor： ANDREWS JOHN R

    IPC: G02B26/10 ,  G02B26/12 ,  G02F1/29 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/04

    Abstract: An optical element (50) for the selective deflection of a scan line in a process direction in a raster output scanner (ROS) electrophotographic printer (10). The optical element includes a chamber (54;Fig. 3) containing a nematic liquid crystal material having a variable index of refraction (n1(V)) as a function of voltage applied thereacross (Fig.2). The ROS includes a control and feedback system coupled to a variable voltage source (58) for applying a biasing voltage (V) across the optical element (50) to control the variable index of refraction (n1(V)) of the optical element for selectively deflecting the scan line in the process direction.

    METHOD AND APPARATUS FOR REGISTERING MULTIPLE IMAGES IN A COLOR XEROGRAPHIC SYSTEM
    36.
    发明专利
    METHOD AND APPARATUS FOR REGISTERING MULTIPLE IMAGES IN A COLOR XEROGRAPHIC SYSTEM 未知

    公开(公告)号：CA2125712C

    公开(公告)日：1997-04-29

    申请号：CA2125712

    申请日：1994-06-13

    Applicant: XEROX CORP

    Inventor： ANDREWS JOHN R

    IPC: B41J2/525 ,  B65H23/02 ,  B65H23/04 ,  G03G15/01 ,  G03G15/36 ,  G03G21/00 ,  G03G21/14 ,  H04N1/50 ,  G03G13/01

    Abstract: A method and apparatus is provided for registration of color images on a photoreceptor belt. Registration is accomplished by forming, in one embodiment, a chevron-shaped registration marks in non-image areas of the belt. A Raster Output Scanner (ROS) sweeps an output beam across the belt's surface. The beam is modulated in accordance with input video data to form successive color images. An unmodulated beam is also swept across the registration marks, each mark being successively swept by a plurality of beams. With each crossing of the legs of the chevron, two signals are generated by an associated sensor and stored in an averaging and extrapolation circuit. The multiple signals are compared and detection of the intersection is calculated by an extrapolation method. The averaging circuitry generates a registration signal which is used to enable an accurate start of page signal, to correct for skew and to adjust for errors and line-to-line spacing between lines in a color image frame.

    37.
    发明专利
    未知

    公开(公告)号：DE69111893D1

    公开(公告)日：1995-09-14

    申请号：DE69111893

    申请日：1991-05-15

    Applicant: XEROX CORP

    Inventor： ANDREWS JOHN R ,  SIMPSON YONN K

    IPC: G02B1/11 ,  G03G5/047 ,  G03G5/10 ,  G03G5/14 ,  H04N5/30

    Abstract: A layered photosensitive imaging member (14) is modified to reduce the effects of interference within the member caused by reflections from coherent light incident on a base ground plane. The modification described is to form the ground plane (32) of a low-reflecting material such as tin oxide or indium tin oxide. An additional feature is to add absorbing materials to the dielectric material (34) upon which the ground plane is formed to absorb secondary reflections from the anti-curl back coating layer/air interface.

    Method and Apparatus for Registering Multiple Images in a Color Xerographic System
    38.
    发明专利
    Method and Apparatus for Registering Multiple Images in a Color Xerographic System 未知

    公开(公告)号：CA2125712A1

    公开(公告)日：1995-02-03

    申请号：CA2125712

    申请日：1994-06-13

    Applicant: XEROX CORP

    Inventor： ANDREWS JOHN R

    IPC: B41J2/525 ,  B65H23/02 ,  B65H23/04 ,  G03G15/01 ,  G03G15/36 ,  G03G21/00 ,  G03G21/14 ,  H04N1/50 ,  G03G13/01

    Abstract: A method and apparatus is provided for registration of color images on a photoreceptor belt (14). Registration is accomplished by forming, in one embodiment, chevron-shaped registration marks (10,12) in non-image areas of the belt (14). A Raster Output Scanner (ROS) sweeps an output beam across the belt's surface. The beam is modulated in accordance with input video data to form successive color images. An unmodulated beam is also swept across the registration marks, each mark being successively swept by a plurality of beams. With each crossing of the legs of the chevron (10,12), two signals are generated by an associated sensor and stored in an averaging and extrapolation circuit. The multiple signals are compared and detection of the intersection is calculated by an extrapolation method. The averaging circuitry generates a registration signal which is used to enable an accurate start of page signal, to correct for skew and to adlust for errors and line-to-line spacing between lines in a color image frame (24).

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