公开(公告)号：US5563645A

公开(公告)日：1996-10-08

申请号：US065499

申请日：1993-05-24

申请人： Tsuyoshi Kunishi ,  Nobumasa Fukuzawa ,  Hiroyuki Ichikawa

发明人： Tsuyoshi Kunishi ,  Nobumasa Fukuzawa ,  Hiroyuki Ichikawa

IPC分类号： H04N1/409 ,  G03G21/00 ,  H04N1/407 ,  G01D15/06 ,  H04N1/21

CPC分类号： H04N1/407

摘要： The present invention relates to an electrophotographic technique for enhancing the quality of a reproduced image of character information and image information having an intermediate gradient.A latent image forming means provides a plurality of preset .gamma.-features and a plurality of sharpness features forsetting a resolving power of an image to be formed which can be selected optionally, and, in the latent image forming means, when a particular sharpness feature is set in response to a .gamma.-feature selected from the aforementioned .gamma.-features. In the reproduction of character image information, a .gamma.-feature for enabling the image reproduction to enhance the edge effect is selected, thereby emphasizing the sharpness feature. Whereas, in the reproduction of the image information to reproduce an intermediate gradient, a .gamma.-feature for enabling the reproduction of the intermediate gradient is selected, thereby weakening the sharpness feature.

摘要翻译： 本发明涉及一种用于提高字符信息的再现图像的质量和具有中间梯度的图像信息的电子照相技术。 潜像形成装置提供多个预设的伽马特征和多个锐度特征，用于设定可任选地形成的图像的分辨率，并且在潜像形成装置中，当特定的锐度特征为 响应于从上述γ特征中选择的γ特征设置。 在字符图像信息的再现中，选择用于使图像再现能够增强边缘效果的γ特征，从而强调锐度特征。 然而，在再现中继梯度的图像信息的再现中，选择能够再现中间梯度的γ特征，从而削弱锐度特征。

公开(公告)号：US5760930A

公开(公告)日：1998-06-02

申请号：US465911

申请日：1995-06-06

申请人： Nobumasa Fukuzawa ,  Tsuyoshi Kunishi ,  Hiroyuki Ichikawa

发明人： Nobumasa Fukuzawa ,  Tsuyoshi Kunishi ,  Hiroyuki Ichikawa

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G21/00 ,  H04N1/40 ,  H04N1/46 ,  H04N1/48 ,  H04N1/60

CPC分类号： H04N1/40012

摘要： An image forming apparatus which varies the blending ratio by which color-seperated image signals are blended together to form a monochromatic image. The apparatus inputs a plurality of image signals which have been color-separated, and synthesizes the plurality of image signals by blending to form a monochromatic image. A density regulating mechanism regulates the density of the monochromatic image to a predetermined density level, and the apparatus varies the blending ratio of the synthesized plurality of image signals based on the predetermined density level.

摘要翻译： 一种图像形成装置，其将分色图像信号混合在一起的混合比率变化，形成单色图像。 该装置输入已经被颜色分离的多个图像信号，并且通过混合来合成多个图像信号以形成单色图像。 密度调节机构将单色图像的浓度调节到预定浓度水平，并且该装置基于预定的浓度水平改变合成的多个图像信号的混合比。

公开(公告)号：US06636719B2

公开(公告)日：2003-10-21

申请号：US10207846

申请日：2002-07-31

申请人： Tsuyoshi Kunishi ,  Jun Asai ,  Keizo Ogara

发明人： Tsuyoshi Kunishi ,  Jun Asai ,  Keizo Ogara

IPC分类号： G03G2100

CPC分类号： G03G21/0029 ,  G03G2221/0021

摘要： An image forming apparatus includes an image bearing member; a driver for driving the image bearing member; a latent image forming device for forming an electrostatic latent image on the image bearing member; a developing device for developing the electrostatic latent image on the image bearing member with a developer; a cleaning member, contacted to the image bearing member, for cleaning a surface of the image bearing member; a vibration imparting device for vibrating the cleaning member; and a controller for causing the latent image forming means to form an electrostatic pattern for attracting the developer deposited on the cleaning member and for causing the device to move the electrostatic pattern to a contact portion where the cleaning member is contacted to the image bearing member.

摘要翻译： 图像形成装置包括：图像承载部件; 用于驱动图像承载部件的驱动器; 用于在图像承载部件上形成静电潜像的潜像形成装置; 显影装置，其用显影剂显影图像承载部件上的静电潜像; 清洁构件，与图像承载构件接触，用于清洁图像承载构件的表面; 用于振动清洁构件的振动赋予装置; 以及用于使潜像形成装置形成用于吸引沉积在清洁部件上的显影剂并使装置将静电图案移动到清洁部件与图像承载部件接触的接触部分的静电图案的控制器。

公开(公告)号：US4992831A

公开(公告)日：1991-02-12

申请号：US145594

申请日：1988-01-19

申请人： Tsuyoshi Kunishi

发明人： Tsuyoshi Kunishi

IPC分类号： G03G13/01 ,  G03G13/08 ,  G03G13/22

CPC分类号： G03G13/013 ,  G03G13/08 ,  G03G13/22

摘要： In an image forming apparatus having two developers, toner deposition parameters in the second developing device are larger than the first developing device. Here, the toner deposition parameter is represented by an amount of electric charge of the toner particles, an amount of developer particles constituting a foggy background, an amount of carrier particles deposited on the image bearing member, or any combination of these parameters. The amount of the fog developer particles is determined first by a ratio of the total area occupied by the fog developer particles to the entire background area, second by a ratio of the fog developer particles having large particle sizes to the entire fog developer particles, third by a particle size at which a number of the fog developer particles accumulated in the large size side of a number/particle size distribution graph reaches a predetermined percentage to the entie number of fog developer particles, and fourth by a number of fog developer particles per unit area. By this arrangement of the developing devices, failure of transfer material separation from the image bearing member and retransfer of the image can be avoided when the toner image formed by the second developer is transferred.

公开(公告)号：US06917776B2

公开(公告)日：2005-07-12

申请号：US10456539

申请日：2003-06-09

申请人： Tsuyoshi Kunishi ,  Nobuhiro Hayashi ,  Toru Kabashima

发明人： Tsuyoshi Kunishi ,  Nobuhiro Hayashi ,  Toru Kabashima

IPC分类号： G03G15/02 ,  H01T19/00

CPC分类号： H01T19/00 ,  G03G15/0291 ,  Y10T428/265

摘要： A discharge wire usable in an electrification device includes a tungsten wire subjected to mirror finish processing and an oxidized layer formed by heating the surface of the tungsten wire at a temperature in the range 400 to 600° C., wherein the film has a thickness in the range of 0.01 to 0.3 μm.

摘要翻译： 可用于带电装置的放电线包括经镜面加工处理的钨丝和通过在400-600℃的温度范围内加热钨丝的表面而形成的氧化层，其中该膜的厚度为 范围为0.01〜0.3μm。

公开(公告)号：US06226108B1

公开(公告)日：2001-05-01

申请号：US08745935

申请日：1996-11-08

申请人： Yuichiro Toyohara ,  Tsuyoshi Kunishi ,  Yukio Watanabe

发明人： Yuichiro Toyohara ,  Tsuyoshi Kunishi ,  Yukio Watanabe

IPC分类号： G03F308

CPC分类号： H04N1/4078

摘要： When an image is adjusted to compensate for individual differences among image forming units, there are cases where a phenomenon occurs in which a contour that is originally non-existent appears in a low-density portion, namely an area other than that where the output density characteristic is linear. In such instances image quality deteriorates markedly when importance is placed upon tonality. To solve this problem, a printer is caused to print an image diagnostic pattern, the image diagnostic pattern that has been printed is read by a reader and the linear portion of the output density characteristic of a design center value and the linear portion of the read output density characteristic are approximated by straight lines. Both of the output density characteristics are compared and image adjustment coefficients A, B are compared. The coefficients A, B thus obtained are set in a primary converter and gamma tables in a gamma converter are changed over in conformity with the values of the coefficients A, B.

摘要翻译： 当调整图像以补偿图像形成单元之间的个体差异时，存在发生现象的情况，其中最初不存在的轮廓出现在低密度部分中，即除了输出密度 特征是线性的。 在这种情况下，当重视音调时，图像质量显着恶化。 为了解决这个问题，使打印机打印图像诊断图案，由读取器读取已打印的图像诊断图案，并且设计中心值的输出密度特性和读取的线性部分的线性部分 输出密度特性由直线近似。 比较两个输出密度特性，比较图像调整系数A，B。 这样获得的系数A，B被设置在初级转换器中，伽马转换器中的伽马表根据系数A，B的值而被改变。

公开(公告)号：US5790918A

公开(公告)日：1998-08-04

申请号：US604394

申请日：1996-02-21

申请人： Tsuyoshi Kunishi

发明人： Tsuyoshi Kunishi

IPC分类号： G03G21/00 ,  G03G15/01 ,  G03G15/08 ,  H04N1/00 ,  H04N1/32

CPC分类号： H04N1/32512 ,  H04N1/00912 ,  H04N1/32502 ,  H04N1/32609 ,  H04N1/32635 ,  H04N1/00204 ,  H04N2201/0081 ,  H04N2201/0082 ,  H04N2201/0086

摘要： In an image forming apparatus, and related method of forming an image, having a copy function, a printer function, and a facsimile function, when the absence of the toner is detected, a copy or a data print from a computer is inhibited but a recording of an image which was facsimile received is permitted. Thus, a situation such that the facsimile reception cannot be performed due to the absence of the toner at night or the like is prevented.

摘要翻译： 在形成图像的图像形成装置以及具有复印功能，打印机功能和传真功能的相关方法中，当检测到不存在调色剂时，禁止来自计算机的复印或数据打印，但是 允许接收传真的图像的记录。 因此，防止了由于晚上不存在调色剂而导致传真接收不能进行的情况。

公开(公告)号：US5671462A

公开(公告)日：1997-09-23

申请号：US504760

申请日：1995-07-19

申请人： Yuichiro Toyohara ,  Tsuyoshi Kunishi

发明人： Yuichiro Toyohara ,  Tsuyoshi Kunishi

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G15/2039

摘要： A fixing device includes a first heater, a second heater having a heat distribution different from that of the first heater, a heating member heated by the first and second heaters, and a temperature detecting element for detecting the temperature of the heating member. A power supply control element controls the power supply to the first heater and second heater in such a manner that the temperature detected by the temperature detecting element is maintained at a target temperature. After a fixing operation and until the temperature detected by the temperature detecting element rises from the fixing temperature to a stand-by temperature higher than the fixing temperature, the power supply element is adapted to effect power supply control different from that in the stand-by state.

摘要翻译： 定影装置包括第一加热器，具有与第一加热器不同的热分布的第二加热器，由第一和第二加热器加热的加热构件，以及用于检测加热构件的温度的温度检测元件。 电源控制元件以使得由温度检测元件检测到的温度保持在目标温度的方式控制到第一加热器和第二加热器的电力供应。 在定影操作之后，并且直到由温度检测元件检测到的温度从定影温度升高到高于定影温度的待机温度时，电源元件适于实现与待机不同的电源控制 州。

公开(公告)号：US06501492B1

公开(公告)日：2002-12-31

申请号：US08814058

申请日：1997-03-10

申请人： Tsuyoshi Kunishi ,  Kazushige Nishiyama ,  Yuichiro Toyohara

发明人： Tsuyoshi Kunishi ,  Kazushige Nishiyama ,  Yuichiro Toyohara

IPC分类号： B41J2385

CPC分类号： H04N1/4072 ,  G03G15/065

摘要： An image forming apparatus for outputting an image through an electrophotographic process in accordance with a digital image signal includes an electrophotographic photosensitive member; an optical system for applying light information to the photosensitive member; a developing device for forming a toner image on the photosensitive member; an input path for a plurality of digital image signals containing a bi-level digital image signal and a multi-level digital image signal; a controller for changing developing condition of the developing device when the image is outputted in accordance with the bi-level digital image signal, and changing an image forming condition which is different from the developing condition when an image is outputted in accordance with a multi-level digital image signal.

摘要翻译： 根据数字图像信号通过电子照相处理输出图像的图像形成装置包括电子照相感光构件; 光学系统，用于向感光构件施加光信息; 用于在感光构件上形成调色剂图像的显影装置; 用于包含双电平数字图像信号和多电平数字图像信号的多个数字图像信号的输入路径; 根据双电平数字图像信号输出图像时改变显影装置的显影状态的控制器，以及根据多级数字图像信号输出图像时改变与显影条件不同的图像形成条件， 级数字图像信号。

公开(公告)号：US5790917A

公开(公告)日：1998-08-04

申请号：US739016

申请日：1996-10-28

申请人： Keizo Takura ,  Tsuyoshi Kunishi

发明人： Keizo Takura ,  Tsuyoshi Kunishi

IPC分类号： G03G15/08

CPC分类号： G03G15/0856 ,  G03G15/086 ,  G03G15/0889 ,  G03G2215/0888

摘要： A developing device is constructed by a developing unit for developing an electrostatic latent image on an image holding member, a developing agent containing unit for containing a developing agent which is supplied to the developing unit, an agitator, provided in the developing agent containing unit, for agitating the developing agent, a detecting sensor for detecting a residual amount of developing agent in the developing agent containing unit, and a determining device for determining the residual amount of developing agent at a plurality of levels on the basis of an output state of the detecting sensor in a predetermined time range. The determining device determines the residual amount of developing agent on the basis of a ratio of an output time of a developing agent presence state of the detecting sensor and an output time of a developing agent absence state in the predetermined time range. When a ratio at which the output time of the developing agent presence state of the detecting sensor occupies in the predetermined time range is equal to or less than a predetermined value, the determining device determines that the residual amount of developing agent is small, and when the ratio is substantially equal to 0, the determining device determines the absence of developing agent.

摘要翻译： 显影装置由用于在图像保持部件上显影静电潜像的显影单元构成，显影剂容纳单元用于容纳提供给显影单元的显影剂，设置在显影剂容纳单元中的搅拌器， 用于搅拌显影剂的检测传感器，用于检测显影剂容纳单元中的显影剂残留量的检测传感器，以及用于基于所述显影剂的输出状态确定多个等级的显影剂的剩余量的确定装置 在预定时间范围内检测传感器。 确定装置基于检测传感器的显影剂存在状态的输出时间与显影剂不存在状态的输出时间在预定时间范围内的比率来确定显影剂的剩余量。 当检测传感器的显影剂存在状态的输出时间占预定时间范围的比例等于或小于预定值时，确定装置确定显影剂的剩余量小，并且当 该比例基本上等于0，则确定装置确定不存在显影剂。