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101. 发明授权

US5285241A Maintaining precise electrostatic control using two ESVs 失效
标题翻译：使用两个ESV保持精确的静电控制
公开(公告)号：US5285241A
公开(公告)日：1994-02-08
申请号：US986400
申请日：1982-12-07
申请人： Mark A. Scheuer
发明人： Mark A. Scheuer
IPC分类号： G03G15/00 , G03G15/01 , G03G21/00
CPC分类号： G03G15/5037 , G03G15/0121
摘要： Erroneous voltage readings of Electrostatic Voltmeters (ESVs), which have become contaminated by charged particles (i.e. toner) from developer housings used for developing latent images on a photoreceptor surface, are negated by adjusting the readings of the ESVs to compensate for the contamination of the ESVs. Additionally, The developer housing biases are adjusted by an amount equal to the difference between the voltages measured by the ESVs thereby insuring proper development and cleaning fields during development.
摘要翻译：已经被用于在感光体表面上显影潜像的显影剂壳体的带电粒子（即调色剂）污染的静电电压表（ESV）的错误电压读数通过调整ESV的读数来补偿 ESVs。此外，开发商的住房偏差被调整等于由ESV测量的电压之差的量，从而确保在开发过程中适当的开发和清洁领域。

102. 发明授权

US5194878A Color electrophotographic method 失效
标题翻译：彩色电子照相法
公开(公告)号：US5194878A
公开(公告)日：1993-03-16
申请号：US752213
申请日：1991-08-21
申请人： Hajime Murakami , Yoshimasa Kumashiro
发明人： Hajime Murakami , Yoshimasa Kumashiro
IPC分类号： G03G13/01 , G03G15/00 , H04N1/407 , H04N1/60
CPC分类号： G03G13/01 , G03G15/5037 , H04N1/4072 , H04N1/6027 , G03G2215/00084 , Y10S347/90
摘要： Disclosed is a color electrophotographic method according to which color images of high quality can be stably obtained by digital signal processing of image information. This method comprises converting a read image signal to a digital signal, subjecting the digital signal to signal processing which includes tone correction of photoreceptor and tone correction of toner color density, exposing charged photoreceptor with a light having intensity modulated according to the signal to form a electrostatic latent image and then developing the latent image.
摘要翻译：公开了一种彩色电子照相方法，通过图像信息的数字信号处理，可以稳定地获得高质量的彩色图像。该方法包括将读取的图像信号转换为数字信号，对数字信号进行信号处理，该信号处理包括感光体的色调校正和调色剂颜色浓度的色调校正，用具有根据该信号调制强度的光来曝光带电感光体，以形成静电潜像，然后显影潜像。

103. 发明授权

US5181071A Apparatus for evaluating characteristics of photosensitive drum for electrophotography 失效
标题翻译：用于评估电子照相用感光鼓的特性的装置
公开(公告)号：US5181071A
公开(公告)日：1993-01-19
申请号：US801663
申请日：1991-12-02
申请人： Satoshi Nakajima , Kouichi Mochizuki , Hiroki Kobayashi , Yuji Kohno
发明人： Satoshi Nakajima , Kouichi Mochizuki , Hiroki Kobayashi , Yuji Kohno
IPC分类号： G03G15/00
CPC分类号： G03G15/5037 , G03G15/751
摘要： An apparatus for evaluating the characteristics of a photosensitive drum for use in electrophotography including a rotatable photosensitive drum having characteristics to be measured, a charging portion and an exposure light source portion and the like respectively secured to portions adjacent to the photosensitive drum. The surface potential of the photosensitive drum, which is generated due to operation of the charging portion and the exposure light source portion or the like, is measured by a potential measuring probe which is, together with the charged portion and the exposure light source portion and the like, secured adjacent to a position of the photosensitive drum, at which light is applied at the shortest distance from the exposure light source portion. The photosensitive drum is moved along its lengthwise direction so that the surface potential of the photosensitive drum is measured by the potential measuring probe.
摘要翻译：一种用于评估用于电子照相的感光鼓的特性的装置，其包括分别固定到与感光鼓相邻的部分的具有被测量特性的可旋转感光鼓，充电部分和曝光光源部分等。由于充电部分和曝光光源部分等的操作而产生的感光鼓的表面电位通过与充电部分和曝光光源部分一起的电位测量探头和类似物被固定在感光鼓的位置附近，在该位置处以距离曝光光源部分最短的距离施加光。感光鼓沿着其长度方向移动，使得感光鼓的表面电位由电位测量探头测量。

104. 发明授权

US5179411A Inversion development controller 失效
标题翻译：逆变发展控制器
公开(公告)号：US5179411A
公开(公告)日：1993-01-12
申请号：US754949
申请日：1991-09-04
申请人： Katsuhiro Yoshiuchi , Akihiro Kondo , Yoshihiro Nakajima
发明人： Katsuhiro Yoshiuchi , Akihiro Kondo , Yoshihiro Nakajima
IPC分类号： G03G15/00 , G03G15/02 , G03G15/043 , G03G15/06
CPC分类号： G03G15/5037 , G03G15/0266 , G03G15/043 , G03G15/065
摘要： An apparatus and method for inversion development control for an image forming device in which toner and carrier particles are prevented from scattering unnecessarily. Scatter prevention is performed by gradually changing both a bias voltage application to a development roller and a surface voltage application to a photosensitive drum of the image forming device. Scatter prevention is also performed by gradually changing both a bias voltage application to a development roller and an exposure light quantity that the photosensitive drum is subjected to by an exposing rod lens array of the image forming device.

105. 发明授权

US5153609A Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US5153609A
公开(公告)日：1992-10-06
申请号：US520876
申请日：1990-05-09
申请人： Toshinori Ando , Yukio Nagase , Sono Gu , Kazuhisa Kemmochi
发明人： Toshinori Ando , Yukio Nagase , Sono Gu , Kazuhisa Kemmochi
IPC分类号： G03G15/00 , H04N1/29 , H04N1/40
CPC分类号： G03G15/5037 , H04N1/295 , H04N1/40037 , H04N1/4005 , G03G2215/00054
摘要： An image forming apparatus has exposure unit for emitting light modified in accordance with image information, the light quantity of said exposure unit being variable, image forming unit for forming image on a photosensitive medium in accordance with light emitted from the exposure unit, detector for detecting the surface state of the photosensitive medium, and controller for optimizing the light quantity of the exposure unit in accordance with the output of the detecting unit. The control unit obtains a potential versus image information variation characteristic of the photosensitive medium based on the output of the detecting unit and sets the light quantity of the exposure unit such that the characteristic approximate a straight line.
摘要翻译：图像形成装置具有用于发射根据图像信息修改的光，曝光单元的光量可变的曝光单元，用于根据从曝光单元发射的光在感光介质上形成图像的图像形成单元，用于检测的检测器感光介质的表面状态，以及根据检测单元的输出优化曝光单元的光量的控制器。控制单元基于检测单元的输出获得感光介质的电位与图像信息变化特性，并且设置曝光单元的光量使得特性接近直线。

106. 发明授权

US5132869A Control circuitry for an image forming apparatus 失效
标题翻译：用于图像形成装置的控制电路
公开(公告)号：US5132869A
公开(公告)日：1992-07-21
申请号：US370736
申请日：1989-06-23
申请人： Masahide Nakaya
发明人： Masahide Nakaya
IPC分类号： G03G15/00 , G03G15/02
CPC分类号： G03G15/5037 , G03G15/0258 , G03G15/0266 , G03G15/0291
摘要： Improved circuitry applicable to an electrophotographic copier or similar image forming apparatus for controlling high voltages which are applied to various components of the apparatus such as corona dischargers. While the charge current of a photoconductive element is detected periodically, the output current of a high-tension power source which feeds a high voltage to a corona discharger is set on the basis of the detected charge current. When the charge current is set at a predetermined value, the output current of the high-tension power source is subjected to constant voltage control. Cleaning is performed only when the voltage is not at a reference value. A current feedback arrangement from the photoconductor uses two oppositely polarized half-wave rectifiers and a voltage doubler.
摘要翻译：适用于电子照相复印机或类似图像形成装置的改进的电路，用于控制施加到诸如电晕放电器的装置的各种部件的高电压。在周期性地检测光电导元件的充电电流的同时，基于检测到的充电电流来设定向电晕放电器供给高电压的高压电源的输出电流。当充电电流设定在预定值时，对高压电源的输出电流进行恒压控制。只有当电压不在参考值时才进行清洁。来自光电导体的电流反馈装置使用两个相对极化的半波整流器和倍压器。

107. 发明授权

US5119131A Electrostatic voltmeter (ESV) zero offset adjustment 失效
标题翻译：静电电压表（ESV）零偏调整
公开(公告)号：US5119131A
公开(公告)日：1992-06-02
申请号：US755192
申请日：1991-09-05
申请人： Anthony L. Paolini , Mark A. Scheuer
发明人： Anthony L. Paolini , Mark A. Scheuer
IPC分类号： G01R29/12 , G03G15/00 , G03G15/01 , G03G15/02 , G03G21/00
CPC分类号： G03G15/5037 , G03G15/01 , G03G15/0152 , G03G15/0163 , G03G15/5041
摘要： In a single pass, tri-level imaging apparatus, erroneous voltage readings of an Electrostatic Voltmeter (ESV) which has become contaminated by charged particles (i.e. toner) are negated by using two ESVs.During each cycle up following a normal cycle down, a pair of Electrostatic Voltmeters (ESVs) are utilized to measure the voltage level on a portion of relatively uncharged portion of a photoreceptor (P/R). Using one of the ESVs, which is less prone to contamination, as a reference, the zero offset of the other is adjusted to achieve the same residual P/R voltage reading. The difference in the readings which is due to toner contamination is the zero offset between the two ESVs. The offset is used to adjust all subsequent voltage readings of the ESV until a new offset is measured.

108. 发明授权

US5060013A Hardcopy output device with test patch location sequencer 失效
标题翻译：硬拷贝输出设备带有测试补丁位置音序器
公开(公告)号：US5060013A
公开(公告)日：1991-10-22
申请号：US561043
申请日：1990-07-31
申请人： John P. Spence
发明人： John P. Spence
IPC分类号： G03G15/00
CPC分类号： G03G15/5041 , G03G15/5037 , H04N1/6041 , G03G2215/00042
摘要： Electrophotographic process control in copiers and printers using test patches at different locations within the image frame. Test patches or areas are placed at various locations in subsequent frames to reduce any memory discontinuities encountered when high density areas are repeatedly placed at the same location within an image frame. The overall image frame includes a plurality of image or picture areas which contain unrelated information data and at least one these areas is replaced with a process test area in some or all of the subsequently produced frames. The test area includes several test strips of varying density which may also be positioned differently within the test area in subsequent frames. The variation in location of the test areas and the position of the test strips can be by random selection or by a predetermined pattern which places the areas and strips at several possible locations. The locations are communicated to the process controller so that appropriate sensors can properly monitor and measure the test patches.
摘要翻译：复印机和打印机中的电子照相过程控制使用图像框架内不同位置的测试贴片。测试补丁或区域被放置在后续帧中的各个位置，以减少当高密度区域重复放置在图像帧内的相同位置时遇到的任何存储器不连续性。整个图像帧包括多个包含不相关信息数据的图像或图像区域，并且至少一个这些区域被随后产生的帧的一些或全部中的过程测试区域所替代。测试区域包括几个不同密度的测试条，其也可以在随后的帧中在测试区域内不同地定位。测试区域的位置变化和测试条的位置可以通过随机选择或将区域和条放置在几个可能的位置的预定图案来进行。这些位置被传送到过程控制器，使得适当的传感器可以适当地监测和测量测试补丁。

109. 发明授权

US5043765A Image forming apparatus including control means responsive to image forming conditions 失效
标题翻译：图像形成装置包括响应图像形成条件的控制装置
公开(公告)号：US5043765A
公开(公告)日：1991-08-27
申请号：US412433
申请日：1989-09-25
申请人： Nao Nagashima
发明人： Nao Nagashima
IPC分类号： G03G15/00 , G03G21/14 , G06K15/22
CPC分类号： G03G15/5037 , G03G21/14 , G06K15/027 , G06K15/22
摘要： An apparatus has an image forming device for forming an image on a recording member, a digital computer having a memory storing a program for controlling the image formation by the image forming device, and a display device for displaying a task currently executed by the digital computer in plural tasks contained in the program. The program has a plurality of subprograms which are carried out by the computer in response to different respective timing signals, and the display is controlled by the computer to display also the result of the subprogram.
摘要翻译：一种装置具有用于在记录构件上形成图像的图像形成装置，具有存储用于控制图像形成装置的图像形成的程序的存储器的数字计算机和用于显示由数字计算机当前执行的任务的显示装置在程序中包含的多个任务。程序具有多个子程序，这些子程序由计算机响应不同的各自的定时信号执行，并且显示器由计算机控制以显示子程序的结果。

110. 发明授权

US5040021A Transmission densitometer by using differential comparison of electrostatic voltage signals 失效
标题翻译：透射光密度计采用差分比较静电电压信号
公开(公告)号：US5040021A
公开(公告)日：1991-08-13
申请号：US516655
申请日：1990-04-30
申请人： William Y. Fowlkes
发明人： William Y. Fowlkes
IPC分类号： G03G15/00 , G03G15/08
CPC分类号： G03G15/5037 , G03G15/0851 , G03G15/5041
摘要： A transmission densitometer determines the optical density of an electrically charged layer of toner material on a photoconductive layer by exposing the photoconductive layer to radiation through the toner layer such that the amount of exposure is characteristic of the density of the toner layer. The change in voltage on the surface of the toner layer caused by the exposure is detected, such that the change in detected voltage is characteristic of the density of the toner layer.The measurement of the change in the detected voltage is carried out by measuring the characteristic voltage on a toner layer developed upon a photoconductive layer using a first electrostatic voltmeter, discharging the characteristic voltage on the area of the photoconductor which was measured by the first electrostatic voltmeter using the exposing device, and measuring the remaining voltage in that area by using a second electrostatic voltmeter. The difference between the first measured characteristic voltage and the second measured characteristic voltage on the tone layer is indicative of the amount of toner present on the photoconductive layer.
摘要翻译：透射光密度计通过将光电导层暴露于通过调色剂层的辐射来确定光电导层上调色剂材料的带电层的光密度，使得曝光量是调色剂层密度的特征。检测由曝光引起的调色剂层表面上的电压变化，使得检测电压的变化是调色剂层的密度的特征。通过使用第一静电电压计测量在光电导层上显影的调色剂层上的特征电压，对通过第一静电电压计测得的光电导体区域上的特征电压进行放电来进行检测电压变化的测量使用曝光装置，并通过使用第二静电电压计测量该区域中的剩余电压。第一测量特征电压和色调层上的第二测量特征电压之间的差异表示存在于光电导层上的调色剂的量。

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