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    • 1. 发明授权
    • Feed forward and feedback toner concentration control for an imaging
system
    • 成像系统的前馈和反馈调色剂浓度控制
    • US6160971A
    • 2000-12-12
    • US428341
    • 1999-10-27
    • Mark A. ScheuerJohn BuraniczPatricia J. DonaldsonPaul A. GarsinEric M. GrossEric S. HambyDaniel W. MacDonaldPrasad PadmanabhanEdward W. Smith, Jr.Joseph W. Ward
    • Mark A. ScheuerJohn BuraniczPatricia J. DonaldsonPaul A. GarsinEric M. GrossEric S. HambyDaniel W. MacDonaldPrasad PadmanabhanEdward W. Smith, Jr.Joseph W. Ward
    • G03G15/08
    • G03G15/0849G03G15/0853
    • The present invention generally relates to an imaging system, and more specifically, a method and apparatus for accurately predicting toner usage and hence toner dispensing requirements in an imaging system. More specifically, the present invention relates to a toner concentration control system for maintaining toner concentration in a developer structure, which is connected to a dispenser containing toner. The toner concentration control system includes a toner mass estimator providing a toner mass estimate of the toner mass in the developer structure to be applied to the photoreceptor; a feed forward dispense unit receiving the toner mass estimate and transmitting a feed forward dispense command based on the toner mass estimate; a toner concentration target adjusted for toner break-in in the developer structure; a feed back dispense unit receiving the adjusted toner concentration target and transmitting a feedback dispense command; and a total dispense unit receiving the feed forward dispense command and the feedback dispense command, and outputting total dispense command to the dispenser, which dispenses the toner to the developer structure in accordance with the total dispense command.
    • 本发明一般涉及一种成像系统,更具体地说,涉及用于准确地预测成像系统中的调色剂使用情况以及因此调色剂分配需求的方法和装置。 更具体地说,本发明涉及一种用于维持显影结构中的调色剂浓度的调色剂浓度控制系统,该调色剂浓度控制系统连接到包含调色剂的分配器。 调色剂浓度控制系统包括调色剂质量估计器,其提供将要施加到感光体的显影剂结构中的调色剂质量的调色剂质量估计; 接收调色剂质量估计的前馈分配单元和基于调色剂质量估计传送前馈分配命令; 调节用于显影剂结构中的调色剂破碎的调色剂浓度目标; 接收经调节的调色剂浓度目标并发送反馈分配命令的反馈分配单元; 以及总分配单元,其接收前馈分配指令和反馈分配命令,并且将总分配命令输出到分配器,分配器根据总分配命令将调色剂分配给显影剂结构。
    • 4. 发明授权
    • Toner concentration control for an imaging system
    • 成像系统的调色剂浓度控制
    • US06175698B1
    • 2001-01-16
    • US09428615
    • 1999-10-27
    • Mark A. ScheuerJohn BuraniczPatricia J. DonaldsonPaul A. GarsinEric M. GrossEric S. HambyDaniel W. MacDonaldPrasad PadmanabhanEdward W. Smith, Jr.Joseph W. Ward
    • Mark A. ScheuerJohn BuraniczPatricia J. DonaldsonPaul A. GarsinEric M. GrossEric S. HambyDaniel W. MacDonaldPrasad PadmanabhanEdward W. Smith, Jr.Joseph W. Ward
    • G03G1508
    • G03G15/0849G03G15/0853G03G2215/017
    • The present invention generally relates to an imaging system, and more specifically, a method and apparatus for accurately predicting toner usage and hence toner dispensing requirements in an imaging system. The toner concentration control system maintains toner concentration in a developer structure, which is connected to a dispenser containing toner. The toner concentration control system includes a toner mass estimator providing a toner mass estimate of the toner mass in the developer structure to be applied to the photoreceptor; a feed forward dispense unit receiving the toner mass estimate and transmitting a feed forward dispense command based on the toner mass estimate; a toner concentration target adjusted by toner age, toner break-in and temperature in the developer structure; a feed back dispense unit receiving the adjusted toner concentration target and transmitting a feedback dispense command; and a total dispense unit receiving the feed forward dispense command and the feedback dispense command, and outputting total dispense command to the dispenser, which dispenses the toner to the developer structure in accordance with the total dispense command.
    • 本发明一般涉及一种成像系统,更具体地说,涉及用于准确地预测成像系统中的调色剂使用情况以及因此调色剂分配需求的方法和装置。 调色剂浓度控制系统保持显影剂结构中的调色剂浓度,其连接到包含调色剂的分配器。 调色剂浓度控制系统包括调色剂质量估计器,其提供将要施加到感光体的显影剂结构中的调色剂质量的调色剂质量估计; 接收调色剂质量估计的前馈分配单元和基于调色剂质量估计传送前馈分配命令; 通过调色剂老化,调色剂破碎和显影剂结构中的温度调节的调色剂浓度目标; 接收经调节的调色剂浓度目标并发送反馈分配命令的反馈分配单元; 以及总分配单元,其接收前馈分配指令和反馈分配命令,并且将总分配命令输出到分配器,分配器根据总分配命令将调色剂分配给显影剂结构。
    • 7. 发明授权
    • System and method for controlling the lower power bound for a raster output scanner in a color xerographic printer
    • 用于控制彩色静电印刷机中光栅输出扫描仪的较低功率限制的系统和方法
    • US07688340B2
    • 2010-03-30
    • US10916301
    • 2004-08-11
    • Patricia J. DonaldsonMark A. ScheuerDaniel W. MacDonald
    • Patricia J. DonaldsonMark A. ScheuerDaniel W. MacDonald
    • B41J2/47B41J2/435G03G15/00G03G15/02
    • G06K15/1209
    • A method and system for a color xerographic machine determines a lower bound for the ROS power levels so that color defects are not produced by light attenuation from one or more layers of toner particles on a latent image. The method computes a minimum ROS power level for the photoreceptor at its maximum and minimum charge levels. The minimum ROS power level is the level at which the discharge voltage does not drop beyond a maximum discharge voltage difference. The difference is related to a toner particle density that affects color reproduction. The minimum ROS power levels for the minimum and maximum photoreceptor charge levels are used to compute a functional relationship for minimum ROS power levels at other photoreceptor charge levels. Thereafter, the minimum ROS power level function may be used to compute minimum ROS power levels for other photoreceptor charge levels. The computed minimum ROS power levels may be used to control the power levels used during color reproduction performed by the machine.
    • 用于彩色静电复印机的方法和系统确定ROS功率电平的下限,使得颜色缺陷不是由潜像上的一层或多层调色剂颗粒的光衰减产生的。 该方法计算感光体在其最大和最小电荷水平下的最小ROS功率电平。 最小ROS功率电平是放电电压不会超过最大放电电压差的电平。 该差异与影响颜色再现的调色剂颗粒密度有关。 最小和最大光感受器电荷水平的最小ROS功率电平用于计算其他光感受器电荷水平下最小ROS功率电平的功能关系。 此后,可以使用最小ROS功率电平功能来计算其他光感受器电荷电平的最小ROS功率电平。 所计算的最小ROS功率电平可以用于控制在由机器执行的色彩再现期间使用的功率电平。
    • 9. 发明授权
    • Method and apparatus for adaptive black solid area estimation in a xerographic apparatus
    • 静电复印机中自适应黑色实体区域估计的方法和装置
    • US06201936B1
    • 2001-03-13
    • US09454421
    • 1999-12-03
    • Eric M. GrossMark A. ScheuerEdward W. Smith, Jr.Yao Rong Wang
    • Eric M. GrossMark A. ScheuerEdward W. Smith, Jr.Yao Rong Wang
    • G03G1500
    • G03G15/5041G03G2215/00042G03G2215/00054G03G2215/017
    • A process control method for color quality control maintains a preselected developed mass per unit area (DMA) of black solid area by adjusting the development field during run-time operation. In order to estimate the DMA of a solid black control patch, which is outside the sensing range of an infra-red densitometer (IRD), an estimation technique is employed which accounts for system changes due to adjustment of the development field. The estimation technique includes generating two or more test patches, using a patch generator, which have DMA readings within the sensing range of the IRD. The DMA readings and corresponding development voltages of the test patches are sensed and used to calculate a developability curve. The developability curve is projected into a region beyond the sensing range of the IRD. From the developability curve, the DMA of the solid black control patch is estimated and employed in a closed feedback loop to return the system to the preselected DMA by adjusting the development field. Development field control provides faster response to toner density changes than toner concentration control, and thus, results in better color quality control.
    • 用于颜色质量控制的过程控制方法通过在运行时操作期间调整开发字段来保持黑色固体区域的每单位面积(DMA)的预选开发质量。 为了估计在红外光密度计(IRD)的感测范围之外的实心黑色控制贴片的DMA,采用了由于开发领域的调整而导致的系统变化的估计技术。 估计技术包括使用在IRD的感测范围内具有DMA读数的补丁生成器来生成两个或更多个测试补丁。 测量贴片的DMA读数和相应的显影电压被检测并用于计算显影性曲线。 显影性曲线投影到超出感光范围的区域内。 根据可开发性曲线,通过调整开发区域,在闭环反馈环路中估计并使用固体黑色控制贴片的DMA以将系统返回到预选的DMA。 开发现场控制比调色剂浓度控制提供更快的对调色剂浓度变化的响应,从而导致更好的颜色质量控制。