公开(公告)号：JPH11277803A

公开(公告)日：1999-10-12

申请号：JP47499

申请日：1999-01-05

Applicant: Xerox Corp ,  ゼロックス コーポレイション

Inventor： APPEL JAMES J

IPC: B41J2/44 ,  G03G15/01 ,  H04N1/50

CPC classification number: G03G15/011 ,  G03G2215/0174 ,  H04N1/506

Abstract: PROBLEM TO BE SOLVED: To make uniform a laser regardless of the fact that the laser has transmitted through a toner layer or not by arranging a marking material and a light collector interacting with a photosensitive material on the surface of the photosensitive material, outputting an interacting light intensity signal and controlling irradiation of light onto an image region based on the signal.
SOLUTION: A light collector 40 is arranged at a position where a part 12a of a beam 12 reflected on the surface of a light receiving body 18 is received. When the body 18 moves a short distance and the beam 12 is reflected not on the exposed body 18 but on a toner layer T, quantity of light being reflected to the light collector 40 is varied significantly because of difference in reflectance. When a light of level within a specified range is reflected to the light collector 40, a signal output corresponding thereto acts on a control system to alter irradiation (output level and/or pulse duration) corresponding to a light source 10 when the beam 12 is yet being directed generally to a concerned pixel region.
COPYRIGHT: (C)1999,JPO

Abstract translation: 要解决的问题：无论激光通过调色剂层是否透过调色剂层的事实，通过在感光材料的表面上布置与感光材料相互作用的标记材料和光收集体的事实，使均匀的激光输出， 光强度信号，并且基于该信号控制光照射到图像区域上。 解决方案：集光器40设置在受光体18的表面上反射的光束12的部分12a的位置。 当主体18移动短距离并且光束12不反射在暴露的主体18上但是在调色剂层T上时，由于反射率的差异，反射到光收集器40的光量显着变化。 当指定范围内的电平的光被反射到光收集器40时，对应于其的信号输出作用在控制系统上以改变当光束12为光源10时对应于光源10的照射（输出电平和/或脉冲持续时间） 但是通常被引导到相关像素区域。

公开(公告)号：JPH11277802A

公开(公告)日：1999-10-12

申请号：JP41399

申请日：1999-01-05

Applicant: Xerox Corp ,  ゼロックス コーポレイション

Inventor： APPEL JAMES J ,  NOWAK WILLIAM J

IPC: H04N1/113 ,  B41J2/44 ,  B41J2/525 ,  G02B26/10 ,  G02B26/12 ,  H04N1/50

CPC classification number: H04N1/508

Abstract: PROBLEM TO BE SOLVED: To correct color banding resulting from jitter between facets in a color imaging system. SOLUTION: A laser 104 is controlled by a modulator 122 such that the first scanning line of each raster scan color image is generated using same facet. It same number of scanning lines exist in each rasher scan color image, corresponding scanning lines of all images are generated using same facet. A scanning line offset required for matching respective raster scan color images correctly is generated using a cylindrical mirror 112 being driven through a piezoelectric element.

Abstract translation: 要解决的问题：纠正由彩色成像系统中的小平面之间的抖动引起的色带。 解决方案：激光器104由调制器122控制，使得每个光栅扫描彩色图像的第一扫描线使用相同的方面生成。 每个扫描彩色图像中存在相同数量的扫描线，所有图像的相应扫描线都使用相同的方面生成。 使用通过压电元件驱动的圆柱形反射镜112产生正确匹配各个光栅扫描彩色图像所需的扫描线偏移。

公开(公告)号：JPH11277801A

公开(公告)日：1999-10-12

申请号：JP3899

申请日：1999-01-04

Applicant: Xerox Corp ,  ゼロックス コーポレイション

Inventor： APPEL JAMES J

IPC: H04N1/113 ,  B41J2/44 ,  G03G15/01 ,  H04N1/50

CPC classification number: H04N1/506

Abstract: PROBLEM TO BE SOLVED: To obtain a method for reducing color banding due to shift between planes in a color electrophotographic system employing a plurality of polygons having a plurality of planes.
SOLUTION: Planes of many polygons 100 are combined to minimize color banding in a composite image formed by combined planes. Formation of each latent image is started by a selected 'starting' plane such that each combined plane copies the matching scanning line of respective latent images thus registering the latent image. Positional shift of an image resulting from advanced or delayed of exposure of latent image required for starting formation of latent image from a correct plane is corrected by moving a cylindrical mirror for turning each polygon and the latent image is registered. Operation of the cylindrical mirror is performed basically by a controlled piezoelectric element.
COPYRIGHT: (C)1999,JPO

Abstract translation: 要解决的问题：获得一种使用多个具有多个平面的多边形的彩色电子照相系统中由于平面之间的移动而减少色带的方法。 解决方案：组合许多多边形100的平面，以最小化由组合平面形成的复合图像中的颜色条带。 通过选择的“起始”平面开始每个潜像的形成，使得每个组合平面复制各个潜像的匹配扫描线，从而记录潜像。 通过移动用于转动每个多边形的圆柱形反射镜并且记录潜像来校正由用于从正确平面开始形成潜像所需的潜像的曝光的高级或延迟曝光产生的图像的位置偏移。 基本上由受控的压电元件执行圆柱形反射镜的操作。

公开(公告)号：JPH10181096A

公开(公告)日：1998-07-07

申请号：JP32489597

申请日：1997-11-26

Applicant: XEROX CORP

Inventor： KUBBY JOEL A ,  PEETERS ERIC ,  VITOMIROV OLIVERA ,  APPEL JAMES J ,  NOWAK WILLIAM J ,  LOFTHUS ROBERT M ,  CHEN JINGKUANG

IPC: B41J2/44 ,  B41J11/42 ,  G02B26/10 ,  G06K15/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12

Abstract: PROBLEM TO BE SOLVED: To provide an inexpensive apparatus for correcting positional shift of a beam spot in a low speed scanning direction by vertically adjusting the position of laser beam, in a raster output scanning system. SOLUTION: A raster output scanning system 10 consists of a photosensitive image forming unit 30, a modulation type laser beam generating unit 13 for generating a beam spot toward the photosensitive image forming unit 30, a horizontal scanning unit 29 for horizontally sweeping the beam spot generated in the modulation type laser beam generating unit 13 so as to traverse the photosensitive image forming unit 30, and a vertical scanning unit 12 having the rotary mirror 15 adjacent to the modulation type laser beam generating unit 13 to perform the positioning in the vertical direction of the beam spot in the vertical developing direction of the photosensitive image forming unit 30.