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    • 4. 发明授权
    • Document size detection apparatus
    • 文件尺寸检测装置
    • US4713550A
    • 1987-12-15
    • US916725
    • 1986-10-08
    • Shunju AnzaiHiromu SasakiNorihide KunikawaKazuyuki Ohgita
    • Shunju AnzaiHiromu SasakiNorihide KunikawaKazuyuki Ohgita
    • G03B27/62G03G15/00
    • G03G15/607G03B27/625B65H2701/113G03G2215/00185
    • A document size detection apparatus having a plurality of sensor portions including light emitting devices and photodetector devices disposed in the vicinity of an original table for detecting the size of a document such as an original mounted on the original table is disclosed. This apparatus uses reflected light or transmitted light, a comparator for comparing the output level of the sensor portion with a reference level, and decision means for deciding the document size depending on the output signal of the comparator. The document size detection apparatus comprises a circuit for changing the reference level of the comparator and for detecting the resultant output of the comparator in order to find the condition in which the reference level becomes equal to the output level of the sensor portion and a storage circuit for storing the value representing that condition, which are used in the adjustment mode without a document mounted on the original table, and a reference level setting circuit for setting the reference level to be input to the comparator depending on the value stored in the storage circuit, which is used in the document size decision mode for detecting the size of a document mounted on the table.
    • 公开了一种原稿尺寸检测装置,其具有多个传感器部分,包括设置在原稿台附近的发光装置和光电检测器装置,用于检测安装在原稿台上的原稿的原稿尺寸。 该装置使用反射光或透射光,用于将传感器部分的输出电平与参考电平进行比较的比较器,以及用于根据比较器的输出信号决定文档尺寸的判定装置。 原稿尺寸检测装置包括用于改变比较器的基准电平并检测比较器的结果输出的电路,以便找到参考电平变得等于传感器部分的输出电平的状态和存储电路 用于存储表示该条件的值,其在没有安装在原始表格上的文档的情况下用于调整模式;以及参考电平设置电路,用于根据存储在存储电路中的值将要输入到参考电平的参考电平设置到比较器 ,其用于文档大小决定模式,用于检测安装在桌子上的文档的大小。
    • 6. 发明申请
    • Development device and toner replenishment method
    • 开发装置和调色剂补充方法
    • US20060285861A1
    • 2006-12-21
    • US11455642
    • 2006-06-20
    • Norihide Kunikawa
    • Norihide Kunikawa
    • G03G15/08
    • G03G15/0856G03G15/0853
    • A development device is provided with a development vessel, a toner box, a toner amount detection sensor, and a control section. The development vessel accommodates toner to be supplied to an electrostatic latent image on an image carrier. The toner box replenishes toner into the development vessel. The toner amount detection sensor detects an amount of toner accommodated in the development vessel. The control section calculates an amount of toner to be used during image formation based on density information of an image to be formed and controls an amount per unit of time for replenishing toner from the toner box to the development vessel based on the calculated amount of toner to be used and the amount of toner accommodated detected by the toner amount detection sensor.
    • 显影装置设置有显影容器,调色剂盒,调色剂量检测传感器和控制部。 显影容器容纳要供应到图像载体上的静电潜像的调色剂。 墨粉盒将调色剂补充到显影容器中。 调色剂量检测传感器检测容纳在显影容器中的调色剂量。 控制部分基于要形成的图像的浓度信息计算图像形成期间使用的调色剂的量,并且基于计算出的调色剂量控制从调色剂盒向显影容器补充调色剂的每单位时间的量 并且由调色剂量检测传感器检测到的调色剂量。
    • 8. 发明授权
    • Development device and toner replenishment method
    • 开发装置和调色剂补充方法
    • US07450868B2
    • 2008-11-11
    • US11455642
    • 2006-06-20
    • Norihide Kunikawa
    • Norihide Kunikawa
    • G03G15/08
    • G03G15/0856G03G15/0853
    • A development device is provided with a development vessel, a toner box, a toner amount detection sensor, and a control section. The development vessel accommodates toner to be supplied to an electrostatic latent image on an image carrier. The toner box replenishes toner into the development vessel. The toner amount detection sensor detects an amount of toner accommodated in the development vessel. The control section calculates an amount of toner to be used during image formation based on density information of an image to be formed and controls an amount per unit of time for replenishing toner from the toner box to the development vessel based on the calculated amount of toner to be used and the amount of toner accommodated detected by the toner amount detection sensor.
    • 显影装置设置有显影容器,调色剂盒,调色剂量检测传感器和控制部。 显影容器容纳要供应到图像载体上的静电潜像的调色剂。 墨粉盒将调色剂补充到显影容器中。 调色剂量检测传感器检测容纳在显影容器中的调色剂量。 控制部分基于要形成的图像的浓度信息计算图像形成期间使用的调色剂的量,并且基于计算出的调色剂量控制从调色剂盒向显影容器补充调色剂的每单位时间的量 并且由调色剂量检测传感器检测到的调色剂量。
    • 9. 发明授权
    • Image processing device
    • 图像处理装置
    • US5515180A
    • 1996-05-07
    • US152975
    • 1993-11-16
    • Hiroshi MaedaToshio YamagishiNorihide KunikawaToshihiro OkahashiTatsuya ItohMasatsugu Nakamura
    • Hiroshi MaedaToshio YamagishiNorihide KunikawaToshihiro OkahashiTatsuya ItohMasatsugu Nakamura
    • H04N1/40H04N1/409
    • H04N1/4092H04N1/40087
    • The present invention is made to reduce the effect of variation of pulses for driving a printer when recording image data and to improve the gray level representation of picture images to be printed. Data incoming through an image reading device are quantized and processed two pixels at a time by a gray level image processing circuit. The two-pixels' data are first discriminated by an edge discriminator to determine whether they represent an edge portion within the image or not. An object image, on which an operation for inter-pixel spacing shall be conducted, is selected according to the discrimination result. The arithmetic and logic portion performs the above-mentioned operation by two pixels at a time if the data correspond to a non-edge portion and performs correction for enhancement if the data correspond to an edge. This may eliminate the effect of dot displacement due to variation of drive pulses of a printer and improve the quality, in particular, of a gray level image portion.
    • 本发明是为了在记录图像数据时减少用于驱动打印机的脉冲变化的影响,并且改善要打印的图像的灰度级表示。 通过图像读取装置输入的数据由灰度级图像处理电路一次量化并处理两个像素。 首先由边缘鉴别器鉴别双像素数据,以确定它们是否代表图像内的边缘部分。 根据鉴别结果选择要进行像素间间隔操作的对象图像。 如果数据对应于非边缘部分,则算术和逻辑部分一次执行上述操作两个像素,并且如果数据对应于边缘,则执行用于增强的校正。 这可以消除由于打印机的驱动脉冲的变化引起的点位移的影响,并且提高了质量,特别是灰度级图像部分的质量。