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    • 3. 发明授权
    • Image forming apparatus for controlling image density using logarithm
compressing means
    • 用于使用对数压缩装置控制图像浓度的图像形成装置
    • US5365313A
    • 1994-11-15
    • US32299
    • 1993-03-17
    • Katsuya NagamochiRintaro Nakane
    • Katsuya NagamochiRintaro Nakane
    • G01N21/88G01J1/44G01N21/84G01N21/86G01N21/952G03G15/00G03G15/08
    • G03G15/5041G01J1/44G01J2001/444G01N2021/4769G01N2021/8433G01N21/86G01N2201/1232G03G2215/00042
    • A toner depositing amount measuring apparatus for measuring the amount of toner deposited on a photosensitive drum includes a light source for irradiating the surface of the photosensitive drum with light and a photoelectric converting section for receiving the reflected light and converting the received reflected light into an electric signal. A logarithmic calculation is applied to the output signal of the photoelectric converting section in a logarithm-compressing section. The temperature characteristics of the logarithm-compressing section are compensated for in a temperature compensating section. The amount of the toner deposition is calculated in a toner depositing amount calculating section based on a difference between the data during non-deposition of the toner and the data during deposition of the toner, the data being obtained from the logarithm-compressing section. Further, image forming conditions are changed in a control section in accordance with an output signal denoting the calculated deposition amount of the toner so as to control the density of the image formed.
    • 用于测量沉积在感光鼓上的调色剂量的调色剂沉积量测量装置包括用于用光照射感光鼓的表面的光源和用于接收反射光的光电转换部分,并将接收的反射光转换成电 信号。 在对数压缩部中对光电转换部的输出信号进行对数运算。 在温度补偿部中补偿对数压缩部的温度特性。 调色剂沉积的量基于调色剂非沉积期间的数据与沉积调色剂期间的数据之间的差异在调色剂沉积量计算部分中计算,该数据从对数压缩部分获得。 此外,根据表示计算出的调色剂沉积量的输出信号,在控制部分中改变图像形成条件,以便控制形成的图像的浓度。
    • 5. 发明授权
    • Maintenance system and method
    • 维护系统和方法
    • US07774169B2
    • 2010-08-10
    • US11427770
    • 2006-06-29
    • Yoshikatsu KamisuwaRintaro Nakane
    • Yoshikatsu KamisuwaRintaro Nakane
    • G06F11/30G21C17/00
    • G06Q10/06G03G15/55
    • A maintenance system for an apparatus that is a maintenance target enables reduction in cost related to maintenance services and reduction in downtime of the apparatus. The maintenance system acquires information related to a visit interval that prescribes a time interval at which a visit should be made for maintenance operation for each consumable part and a replacement interval that prescribes a time interval at which each consumable part should be replaced, acquires a counter value that indicates actual use of the consumable parts, and calculates the time for the next maintenance visit and the consumable part that should be replaced at that time, on the basis of the information related to the visit interval and the replacement interval, and the counter value.
    • 作为维护对象的装置的维护系统能够降低与维护服务相关的成本并减少设备的停机时间。 维护系统获取与访问间隔相关的信息,该访问间隔规定了对于每个消耗部件的维护操作进行访问的时间间隔,以及规定应该更换每个消耗部件的时间间隔的替换间隔,获取计数器 表示实际使用耗材的值,并根据与访问间隔和更换间隔相关的信息计算下次维护访问的时间和当时应当更换的消耗部件,以及计数器 值。
    • 6. 发明授权
    • Maintenance system and method and program therefor
    • 维护系统及其方法和程序
    • US07474988B2
    • 2009-01-06
    • US11277208
    • 2006-03-22
    • Yoshikatsu KamisuwaRintaro Nakane
    • Yoshikatsu KamisuwaRintaro Nakane
    • G06F11/30G21C17/00
    • G06Q10/06
    • To provide a technique of reducing the costs for maintenance work and also the downtime of products. There is provided a maintenance system that calculates a timing to make a visit for maintenance work for consumable parts of a machine to be maintained. The maintenance system includes: a visit-interval calculating section for calculating a visit interval to make a visit for maintenance work for each consumable part on the basis of a failure rate distribution; a replacement-interval calculating section for calculating a replacement interval to replace the consumable parts for each consumable part on the basis of the failure rate distribution; and a visit-timing calculating section for calculating a timing to actually visit the machine to be maintained on the basis of the visit interval calculated by the visit-interval calculating section and the replacement interval calculated by the replacement-interval calculating section.
    • 提供降低维护工作成本和产品停机时间的技术。 提供了一种维护系统,其计算要维护的机器的消耗部件进行维护工作的时间。 维护系统包括:访问间隔计算部分,用于根据故障率分布计算访问间隔以访问每个消耗部件的维护工作; 更换间隔计算部,其基于故障率分布,计算更换每个可消耗部件的消耗部件的更换间隔; 以及访问定时计算部分,用于基于由访问间隔计算部分计算的访问间隔和由替换间隔计算部分计算的替换间隔来计算实际访问要维护的机器的定时。
    • 7. 发明授权
    • Image forming apparatus and image forming method
    • 图像形成装置及图像形成方法
    • US07466464B2
    • 2008-12-16
    • US11812861
    • 2007-06-22
    • Rintaro NakaneShigeru FujiwaraHideaki Fukaya
    • Rintaro NakaneShigeru FujiwaraHideaki Fukaya
    • G03F3/08
    • H04N1/40006H04N1/4076
    • A gradation pattern is printed, the gradation pattern is corrected with a gamma correction table TO based on a result in which the printed gradation pattern is read, the corrected gradation pattern is printed on a photosensitive drum or the like, and a measured density of the printed gradation pattern in S4 is stored as a reference value of density DR. Thereafter, without user's operation, at a set automatic timing, the read gradation pattern P is corrected with the gamma correction table TO and printed on the photosensitive drum or the like, density deviation ΔD between a measured density D of the printed gradation pattern in S6 and the reference value of density DR is determined, and the latest gamma correction table T is generated and updated on the basis of the density deviation ΔD. Consequently, high-quality image formation can be automatically performed.
    • 印刷渐变图案,基于读取印刷的渐变图案的结果,校正的渐变图案被印刷在感光鼓等上,用灰度校正表TO校正灰度图案,并且测量的浓度 S4中的打印灰度图案被存储为密度DR的参考值。 此后,在设定的自动定时下,读出的灰度图案P用伽马校正表TO进行校正并印刷在感光鼓等上,S6中印刷的渐变图案的测量密度D之间的浓度偏差DeltaD 并且确定密度DR的参考值,并且基于密度偏差DeltaD生成和更新最新的伽马校正表T. 因此,可以自动执行高质量的图像形成。
    • 8. 发明申请
    • Maintenance System and Method and Program Therefor
    • 维护系统及其方法与程序
    • US20070225850A1
    • 2007-09-27
    • US11277208
    • 2006-03-22
    • Yoshikatsu KamisuwaRintaro Nakane
    • Yoshikatsu KamisuwaRintaro Nakane
    • G06F19/00
    • G06Q10/06
    • To provide a technique of reducing the costs for maintenance work and also the downtime of products. There is provided a maintenance system that calculates a timing to make a visit for maintenance work for consumable parts of a machine to be maintained. The maintenance system includes: a visit-interval calculating section for calculating a visit interval to make a visit for maintenance work for each consumable part on the basis of a failure rate distribution; a replacement-interval calculating section for calculating a replacement interval to replace the consumable parts for each consumable part on the basis of the failure rate distribution; and a visit-timing calculating section for calculating a timing to actually visit the machine to be maintained on the basis of the visit interval calculated by the visit-interval calculating section and the replacement interval calculated by the replacement-interval calculating section.
    • 提供降低维护工作成本和产品停机时间的技术。 提供了一种维护系统,其计算要维护的机器的消耗部件进行维护工作的时间。 维护系统包括:访问间隔计算部分,用于根据故障率分布计算访问间隔以访问每个消耗部件的维护工作; 更换间隔计算部,其基于故障率分布,计算更换每个可消耗部件的消耗部件的更换间隔; 以及访问定时计算部分,用于基于由访问间隔计算部分计算的访问间隔和由替换间隔计算部分计算的替换间隔来计算实际访问要维护的机器的定时。
    • 9. 发明授权
    • Adjustment-control system for image forming apparatus
    • 图像形成装置的调整控制系统
    • US06553191B1
    • 2003-04-22
    • US09659556
    • 2000-09-11
    • Rintaro Nakane
    • Rintaro Nakane
    • G03G1500
    • G03G15/5041G03G2215/00042
    • An adjustment control system compares multiple control amounts detected by a sensor with target values, thereby computing individual control amount deviations. When at least one of the control amount deviations is out of a predetermined tolerance, an operation-amount-determining section determines operation amounts for compensating the control amount deviations. When successful instances that have been used in the computed control amount deviations are available, the operation-amount-determining section executes a learning-control method that determines the operation amounts according to the control instances. When the successful instances are not available, the operation-amount-determining section executes an adaptive-control method and thereby determines the operation amounts. As a result of the execution of the learning-control, when the control amount deviations are not converged into the tolerance, the operation-amount-determining section determines the successful instances used in the control to be inappropriate. Then, the operation-amount-determining section switches from the learning-control to the adaptive-control, thereby executing adjustment control. In this case, inappropriate successful instances are deleted.
    • 调整控制系统将由传感器检测的多个控制量与目标值进行比较,从而计算各个控制量偏差。 当控制量偏差中的至少一个超出预定公差时,操作量确定部确定用于补偿控制量偏差的操作量。 当在计算出的控制量偏差中使用的成功实例可用时,操作量确定部执行根据控制实例确定操作量的学习控制方法。 当成功的实例不可用时,操作量确定部执行自适应控制方法,从而确定操作量。 作为执行学习控制的结果,当控制量偏差不会收敛到公差中时,操作量确定部确定控制中使用的成功实例是不合适的。 然后,操作量确定部分从学习控制切换到自适应控制,由此执行调整控制。 在这种情况下,不正确的成功实例被删除。
    • 10. 发明授权
    • Image forming apparatus with density control
    • 具有密度控制的图像形成装置
    • US06529694B1
    • 2003-03-04
    • US10015639
    • 2001-12-17
    • Hideaki FukayaRintaro NakaneShigeru Fujiwara
    • Hideaki FukayaRintaro NakaneShigeru Fujiwara
    • G03L1500
    • G03G15/5058G03G2215/0119
    • There is disclosed an image forming apparatus in which photosensitive member properties including potential properties of an exposed portion and unexposed portion of the surface of a photosensitive member irradiated with a light beam are estimated. An appropriate contrast potential and a developing bias voltage and charging grid bias voltage suitable for forming a high-density image are determined by a feedback control based on the photosensitive member properties. A laser power is changed to form an intermediate-density image whose density agrees with an intermediate-density target value. When the laser power is changed, the photosensitive member property changes. Therefore, the photosensitive member property is re-estimated, and the developing bias voltage and charging grid bias voltage are set again while maintaining the appropriate contrast potential.
    • 公开了一种图像形成装置,其中估计了包含曝光部分的电位特性和照射光束的感光构件的表面的未曝光部分的感光构件性质。 通过基于感光构件性质的反馈控制来确定适合于形成高密度图像的适当的对比度电位和显影偏压和充电栅极偏置电压。 改变激光功率以形成密度与中密度目标值一致的中密度图像。 当激光功率改变时,光敏元件性能改变。 因此,重新估计感光构件特性,并且在保持适当的对比度电位的同时再次设置显影偏压和充电栅极偏置电压。