公开(公告)号：US5493326A

公开(公告)日：1996-02-20

申请号：US178177

申请日：1994-01-03

Applicant: John R. Andrews ,  Frank C. Genovese ,  James W. Lannom

Inventor： John R. Andrews ,  Frank C. Genovese ,  James W. Lannom

IPC: G02B26/12 ,  G02B27/00 ,  G02F1/13 ,  G03B27/72 ,  B41J2/47

CPC classification number: G02B27/0031 ,  G02B26/127

Abstract: An optical element for the selective scan line skew correction in a raster output scanner (ROS) of an electrostatographic printer. The optical element includes a chamber having a volume defined by parallel surfaces in substantially parallel planes containing a liquid crystal material having a variable index of refraction as a function of voltage applied thereacross. An inhomogenous electric field is generated through the liquid crystal material to produce a refractive index gradient along substantially perpendicular planes in the optical element. The ROS includes a control and feedback system coupled to a variable voltage source for applying a variable biasing voltage across the optical element to control the variable index of refraction of the liquid crystal material for selectively correcting scan line skew.

Abstract translation: 用于静电打印机的光栅输出扫描器（ROS）中的选择性扫描线偏斜校正的光学元件。 光学元件包括具有由基本上平行的平面中的平行表面限定的容积的腔室，该体积包含具有可变折射率的液晶材料，该可变折射率作为施加于其上的电压的函数。 通过液晶材料产生不均匀的电场，以在光学元件中沿着大致垂直的平面产生折射率梯度。 ROS包括耦合到可变电压源的控制和反馈系统，用于在光学元件上施加可变的偏置电压以控制用于选择性地校正扫描线偏斜的液晶材料的可变折射率。

公开(公告)号：US06226029B1

公开(公告)日：2001-05-01

申请号：US09299263

申请日：1999-04-26

Applicant: James W. Lannom

Inventor： James W. Lannom

IPC: B41J2435

CPC classification number: H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04722 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/0476 ,  H04N2201/04794

Abstract: Printers that correct for polygon phasing errors. Such printers include a raster output scanner, a moving photoreceptor, a page sensor for sensing the position of an image area, a start-of-scan sensor for sensing the start of scan, a light valve array having a plurality of electrically controlled light valves for selectively passing light, and a system controller that controls the light valve(s). The system controller initially selects one of the light valves. When the page sensor senses the beginning of a page the system controller starts selecting sequential light valves at a controlled rate. After a start-of-scan occurs the system controller stops sequencing the light valves. The light valve that passed light when the start-of-scan occurred continues to pass light. Beneficially, the system controller monitors the photoreceptor motion. If the photoreceptor motion changes the system controller then selects a light valve that moves the scan line toward the proper position.

Abstract translation: 纠正多边形相位错误的打印机。 这种打印机包括光栅输出扫描器，移动感光体，用于感测图像区域位置的页面传感器，用于感测扫描开始的扫描开始扫描传感器，具有多个电控光阀的光阀阵列 用于选择性地通过光，以及控制光阀的系统控制器。 系统控制器最初选择一个光阀。 当页面传感器检测页面的开始时，系统控制器以受控的速率开始选择顺序的光阀。 在扫描开始之后，系统控制器停止排序光阀。 当发生扫描发生时通过光的光阀继续通过光。 有利的是，系统控制器监测感光体运动。 如果感光体运动改变系统控制器，则选择将扫描线移向适当位置的光阀。

公开(公告)号：US4578615A

公开(公告)日：1986-03-25

申请号：US605731

申请日：1984-05-01

Applicant: Frank C. Genovese ,  James W. Lannom

Inventor： Frank C. Genovese ,  James W. Lannom

IPC: G03F7/20 ,  H01J29/89 ,  H01J31/15 ,  H01J1/62 ,  H01J63/06

CPC classification number: G03F7/70391 ,  H01J29/89 ,  H01J31/15

Abstract: A vacuum fluorescent printing device is disclosed having cathode filaments, at least one multiplexed control grid and a skewed matrix of addressable phosphor elements configured on an anode in such a fashion as to enable convenient electrical connection plus imagewise recombination of emitted light from said phosphor elements into a high resolution linear array for the purpose of directing this collection of addressable points of light onto a single line of a photoreceptor drum or belt thereby enabling a xerographic image to be generated. A fly's-eye lens is employed as a light coupling means with the printing device.

Abstract translation: 公开了一种真空荧光印刷装置，其具有阴极丝，至少一个多路复用控制网格和可配置磷光体元件的偏斜矩阵，其配置在阳极上，使得能够方便的电连接加上来自所述荧光体元件的发射光的图像复合 高分辨率线性阵列，用于将该可寻址点光的集合引导到感光鼓或带的单个线上，从而使得能够产生静电复印图像。 采用飞眼镜作为与打印装置的光耦合装置。

公开(公告)号：US4563613A

公开(公告)日：1986-01-07

申请号：US605729

申请日：1984-05-01

Applicant: Frank C. Genovese ,  James W. Lannom ,  Joel M. Pollack

Inventor： Frank C. Genovese ,  James W. Lannom ,  Joel M. Pollack

IPC: H01J31/15 ,  B41J2/44 ,  H01J29/46 ,  H01J31/12 ,  H01J1/62 ,  H01J63/04

CPC classification number: H01J31/126 ,  H01J29/46

Abstract: A vacuum fluorescent printing device is disclosed having cathode filaments, a plurality of multiplexed control grids and a skewed matrix of addressable phosphor elements configured on an anode in such a fashion as to enable convenient electrical connection plus imagewise recombination of emitted light from said phosphor elements into a high resolution array for the purpose of directing this collection of addressable points of light onto a single line of a photoreceptor drum or belt thereby enabling a xerographic image to be generated. An equipotential screen grid is located between one of said plurality of grids and the anode in order to reduce voltage swings needed for cutoff of either grid for phosphor addressing purposes.

Abstract translation: 公开了一种真空荧光印刷装置，其具有阴极丝，多个多路复用控制网格和配置在阳极上的可寻址磷光体元件的倾斜矩阵，使得能够方便的电连接加上来自所述荧光体元件的发射光的图像复合 高分辨率阵列，用于将这种可寻址点光的集合引导到感光鼓或带的单个线上，从而使得能够产生静电复印图像。 等电位屏栅位于所述多个栅极之一和阳极之间，以便减少用于磷光体寻址目的的任一栅格截止所需的电压摆幅。

公开(公告)号：US5835121A

公开(公告)日：1998-11-10

申请号：US426203

申请日：1995-04-21

Applicant: Frank C. Genovese ,  James W. Lannom

Inventor： Frank C. Genovese ,  James W. Lannom

IPC: B41J2/44 ,  G06K15/12 ,  H04N1/40 ,  B41J2/47

CPC classification number: H04N1/4005 ,  G06K15/1214 ,  H04N1/40037

Abstract: In a raster output scanning apparatus including a laser diode adapted to output a writing beam, a reflex circuit controls the laser diode. A sensor diode is positioned to receive a portion of light flux from the laser diode while the laser diode emits the writing beam to expose one pixel area on a photosensitive surface. An accumulator associated with the sensor diode accumulates charge created by the sensor diode resulting from light flux from the laser diode. A comparator associated with the accumulator monitors charge accumulated on the accumulator and arrests the source of light flux when the charge accumulated on the accumulator reaches a predetermined threshold level.

Abstract translation: 在包括适于输出写入光束的激光二极管的光栅输出扫描装置中，反射电路控制激光二极管。 传感器二极管被定位成在激光二极管发射写入光束以暴露感光表面上的一个像素区域时接收来自激光二极管的一部分光通量。 与传感器二极管相关联的累加器累积由激光二极管的光通量产生的传感器二极管产生的电荷。 与累加器相关联的比较器监视累积在累加器上的电荷，并且当累积在蓄电池上的电荷达到预定阈值电平时，阻止光通量源。

公开(公告)号：US4859913A

公开(公告)日：1989-08-22

申请号：US605728

申请日：1984-05-01

Applicant: Frank C. Genovese ,  James W. Lannom

Inventor： Frank C. Genovese ,  James W. Lannom

IPC: B41J2/44 ,  B41J2/447 ,  G03F7/20 ,  H01J29/89 ,  H01J31/15 ,  H04N1/23

CPC classification number: G03F7/70391 ,  B41J2/4476 ,  H01J29/89 ,  H01J31/15 ,  H01J2229/893

Abstract: A vacuum fluorescent printing device is disclosed having cathode filaments, a multiplexed control grid and a skewed matrix of addressable phosphor elements configured on an anode in such a fashion as to enable convenient electrical connection plus imagewise recombination of emitted light from said phosphor elements into a high resolution linear array for the purpose of directing this collection of addressable points of light onto a single line of a photoreceptor drum or belt thereby enabling a xerographic image to be generated.

Abstract translation: 公开了一种真空荧光打印装置，其具有阴极丝，多路复用控制网格和可配置磷光体元件的倾斜矩阵，其可配置在阳极上，使得能够方便地进行电连接，加上从所述荧光体元件发射的光的图像复合到高 分辨率线性阵列，用于将该可寻址点光的集合引导到感光鼓或带的单个线上，从而使得能够产生静电复印图像。