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    Vibratory systems for the removal of toner in electrophotographic devices
    3.
    发明公开
    Vibratory systems for the removal of toner in electrophotographic devices 失效
    振动系统调色剂除去在电子照相器件。

    公开(公告)号：EP0638853A2

    公开(公告)日：1995-02-15

    申请号：EP94305838.8

    申请日：1994-08-05

    申请人： XEROX CORPORATION

    发明人： Nowak, William J. ,  Montfort, David B. ,  Stokes, Ronald E.

    IPC分类号： G03G15/16

    CPC分类号： G03G15/16 ,  G03G15/0813

    摘要： An electrophotographic device for reproducing an image on an imaging member (10) includes: processing elements for forming a toner-developed latent image on a charge retentive surface of the imaging member; a transfer station for transferring toner from the imaging surface to a second surface of a receiving member; an arrangement for enhancing toner release from the imaging surface, including a resonator (100) in contact with and applying vibratory energy to the imaging member (10) at a location at which toner release is desired having a resonator resonant frequency f r ; a coupler (164,166) for coupling the imaging member to the resonator; a driving signal source (102) electrically coupled to the resonator, and producing a driving signal selected to drive the resonator at frequency f r ; the imaging member, coupling means and receiving member together defining a system having a first and second belt resonant frequency (f b1 and f b2, respectively) when excited by the toner release enhancer; and the belt resonant frequencies and the resonator resonant frequency selected so that f r = ( f b1 + f b2)/₂

    Colour printer
    5.
    发明公开
    Colour printer 有权

    公开(公告)号：EP0929188A3

    公开(公告)日：2000-11-29

    申请号：EP99300028.0

    申请日：1999-01-04

    申请人： XEROX CORPORATION

    发明人： Appel, James J. ,  Nowak, William J.

    IPC分类号： H04N1/50

    CPC分类号： H04N1/508

    摘要： Correcting color banding problems resulting from facet-to-facet (102) jitter in a color imaging device having a multifaceted polygon (100) are corrected by starting each color separation using the same facet. This facet synchronization has been shown to reduce the objectionable color banding. Imaging offsets that result from either advancing or retarding the exposure of a latent image such that the latent image begins with the same facet as other latent images are compensated for using a rotating cylinder mirror (112) whose rotation is controlled by a piezoelectric element (150).

    Photoreceptor motion sensor using a segmented photosensor array
    7.
    发明公开
    Photoreceptor motion sensor using a segmented photosensor array 失效
    Segmentierte Photosensoranordnung benutzender Photorezeptor-Bewegungssensoren。

    公开(公告)号：EP0565328A2

    公开(公告)日：1993-10-13

    申请号：EP93302649.4

    申请日：1993-04-05

    申请人： XEROX CORPORATION

    发明人： Constanza, Daniel W. ,  Nowak, William J. ,  Loce, Robert P.

    IPC分类号： G03G15/00 ,  G03G15/01 ,  G01P3/36

    CPC分类号： G03G15/5033 ,  G01D5/26 ,  G01P3/36 ,  G03G2215/00075 ,  G03G2215/0158

    摘要： The actual position and velocity of a photoreceptor belt (10) is accurately measured by sensing the passing of illuminated holes (12A-12C) in the belt (10), as the belt moves in a process direction. A segmented sensor array (22) is positioned so as to view the passing of the illuminated holes (12A-12C). A Gaussian light intensity distribution is sensed by a group of sensor pixels which sense the light during a sampling interval. The array (22) produces an output which is operated upon by a centroid processor (32) to determine the center of moment for each sampled intensity distribution. A prediction is then made for projected position of the belt (10) which is very accurate since the centroid calculation is not effected by noise produced by stray light or poorly defined image edges.

    摘要翻译： 感光带（10）的实际位置和速度通过感测皮带（10）中的照射孔（12A-12C）的通过，当皮带沿着加工方向移动时被精确地测量。 定位分段的传感器阵列（22）以便观察照射的孔（12A-12C）的通过。 高斯光强分布由在采样间隔期间感测光的一组传感器像素感测。 阵列（22）产生由质心处理器（32）操作的输出，以确定每个采样强度分布的力矩中心。 然后对皮带（10）的投影位置进行预测，这是非常准确的，因为重心计算不受杂散光产生的噪声或不良定义的图像边缘的影响。

    Segmented resonator structure having a uniform response for electrophotographic imaging
    9.
    发明公开
    Segmented resonator structure having a uniform response for electrophotographic imaging 失效
    具有电子图像成像的均匀响应的分离谐振器结构

    公开(公告)号：EP0465210A3

    公开(公告)日：1992-08-05

    申请号：EP91305982.0

    申请日：1991-07-02

    申请人： XEROX CORPORATION

    发明人： Nowak, William J. ,  Attardi, Anthony A. ,  Costanza, Daniel W.

    IPC分类号： G03G15/16 ,  G03G15/08 ,  B06B3/00

    CPC分类号： G03G21/0005 ,  G03G15/16 ,  G03G2221/0021

    摘要： An electrophotographic device of the type including a flexible belt charge retentive member (10), driven along an endless path through a series of processing stations that create a latent image on the charge retentive surface, develop the image with toner, and bring a sheet of paper or other transfer member into intimate contact with the charge retentive surface at a transfer station (D) for electrostatic transfer of toner from the charge retentive surface to the sheet. For the enhancement of toner release from a surface at any of the processing stations, a resonator (152) suitable for generating vibratory energy is arranged in line contact with the back side of the charge retentive surface (10), to uniformly apply vibratory energy to the charge retentive member. The resonator comprises a horn (156), a continuous support member (154), and a continuous vibration producing member (150) that drives the horn at a resonant frequency to apply vibratory energy to the belt. The horn includes a platform or base portion (156), a horn portion (158) extending therefrom, and having a contacting tip (159). The horn is segmented, through the contacting tip to the platform portion, into a plurality of elements which each act more or less individually. In alternative embodiments, the vibration producing member that drives the horn, and/or the support member may also be segmented in a corresponding manner.

    Frequency sweeping excitation of high frequency vibratory energy producing devices for electrophotographic imaging
    10.
    发明公开
    Frequency sweeping excitation of high frequency vibratory energy producing devices for electrophotographic imaging 失效
    Hochfrequenz-Vibrationsenergie-Erzeugungsvorrichtungen mit Frequenzbanderregungfürelektrofotografische Bilderzeugung。

    公开(公告)号：EP0465217A2

    公开(公告)日：1992-01-08

    申请号：EP91305989.5

    申请日：1991-07-02

    申请人： XEROX CORPORATION

    发明人： Stokes, Ronald E. ,  Nowak, William J. ,  Attardi, Anthony A. ,  Costanza, Daniel W.

    IPC分类号： G03G15/16 ,  G03G21/00

    CPC分类号： G03G15/16

    摘要： For the enhancement of toner release from an imaging surface on a flexible belt member (10) in an electrophotographic device, a resonator (100, 200) suitable for generating vibratory energy is arranged in line contact with the back side of the belt member, to uniformly apply vibratory energy to the member. The resonator includes a horn (152) divided into a linear array of segments and, in one embodiment, an array of vibration producing elements (150a), each coupled to at least one horn segment, and driven with a voltage to produce a high frequency vibratory response. To avoid the problem of variations in response that occurs due to varying resonant frequencies of each horn element, the vibration producing elements are driven across a range of frequencies that includes each resonant frequency required, over a relatively short period of time.

    摘要翻译： 为了增强从电子照相装置中的柔性带构件（10）上的成像表面上的调色剂释放，适于产生振动能的谐振器（100,200）被布置成与带构件的背面线接触， 均匀地向构件施加振动能量。 谐振器包括被划分成线段阵列的喇叭（152），并且在一个实施例中是振动产生元件阵列（150a），每个耦合到至少一个喇叭段，并用电压驱动以产生高频 振动响应。 为了避免由于每个喇叭元件的谐振频率变化而发生的响应变化的问题，振动产生元件在相对短的时间段内跨越包括所需谐振频率的频率范围被驱动。