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    • 1. 发明授权
    • Image forming apparatus having developer content detector
    • 具有显影剂含量检测器的图像形成装置
    • US4883019A
    • 1989-11-28
    • US145815
    • 1988-01-19
    • Takeshi MenjoMasahiro InoueKoji Amemiya
    • Takeshi MenjoMasahiro InoueKoji Amemiya
    • G03G15/08
    • G03G15/0855G03G15/0877
    • An image forming apparatus including an image bearing member, a developing device for developing a latent image formed on the image bearing member and including a developer carrying member for carrying the developer toward the image bearing member, a toner content detecting device including a reflecting member for receiving light and reflecting a quantity of light corresponding to a reference toner content, a light emitting element and a light receiving element for producing an electric signal in accordance with a quantity of light applied to and received from the reflecting member, and a toner content control device for controlling toner supply to the developing device in accordance with a signal produced by the toner content detecting device. The toner content control device includes a device for storing a ratio of a reference toner content signal to a reference reflection density signal. A toner supply control device is provided for producing a ratio signal representative of a ratio of a toner content signal from the light receiving element to a reflection density signal from the light receiving element, for comparing the ratio signals, and for controlling toner supply to the developing device on the basis of a result of the comparison.
    • 一种图像形成装置,包括图像承载部件,用于显影形成在图像承载部件上的潜像的显影装置,并且包括用于将显影剂携带到图像承载部件的显影剂承载部件;调色剂含量检测装置,包括反射部件, 接收光并反射与参考调色剂含量相对应的光量,发光元件和用于根据施加到反射构件并从反射构件接收的光量产生电信号的光接收元件,以及调色剂含量控制 用于根据由调色剂含量检测装置产生的信号控制向显影装置供应调色剂的装置。 调色剂含量控制装置包括用于存储基准调色剂含量信号与参考反射浓度信号的比率的装置。 提供调色剂供应控制装置,用于产生表示来自光接收元件的调色剂含量信号与来自光接收元件的反射浓度信号的比率的比率信号,用于比较信号比率,以及用于控制调色剂供应到 基于比较结果的显影装置。
    • 2. 发明授权
    • Developing apparatus using blank pulse bias
    • 显影装置采用空白脉冲偏置
    • US5669050A
    • 1997-09-16
    • US365034
    • 1994-12-28
    • Yuji SakemiKoji AmemiyaTakeshi MenjoMasahiro InoueMasami Izumizaki
    • Yuji SakemiKoji AmemiyaTakeshi MenjoMasahiro InoueMasami Izumizaki
    • G03G15/06G03G15/09G03G21/00
    • G03G15/065G03G15/0907
    • An image forming apparatus includes an image bearing member for bearing an electrostatic image; a developer carrying member, opposed to the image bearing member, for carrying a developer containing toner; bias voltage applying device for applying a developing bias voltage to the developer carrying member, the bias voltage satisfying: ##EQU1## V1 (V): a voltage applying force to the toner toward the developer carrying member away from the image bearing member;T1 (sec): a time period of application of the voltage V1;V2 (V): a voltage applying force to the toner away from the developer carrying member toward the image bearing member;T2 (sec): a time period of application of the voltage V2;T3 (V): a time period of application of a voltage V3 which is (V1+V2)/2;d (m): distance between the image bearing member and the developer carrying member.
    • 图像形成装置包括用于承载静电图像的图像承载部件; 显影剂承载构件,与图像承载构件相对,用于承载含有调色剂的显影剂; 偏置电压施加装置,用于向显影剂承载构件施加显影偏压,该偏置电压满足以下条件: T3>(133d2 / T2 | V2-V1 |)-1/2T2 V1(V) 朝向显影剂承载构件的调色剂远离图像承载部件; T1(sec):施加电压V1的时间段; V2(V):向显影剂承载构件朝向图像承载构件的向调色剂供电的电压; T2(秒):施加电压V2的时间段; T3(V):施加(V1 + V2)/ 2的电压V3的时间段; d(m):图像承载部件与显影剂承载部件之间的距离。
    • 7. 发明授权
    • Image forming apparatus which sets fixing roller speed depending on the
number of copies on the transfer drum
    • 图像形成装置,其根据转印鼓上的份数设定定影辊速度
    • US5075732A
    • 1991-12-24
    • US573710
    • 1990-08-28
    • Takeshi Menjo
    • Takeshi Menjo
    • G03G15/01G03G15/16G03G15/20
    • G03G15/2064G03G15/1655G03G2215/2045
    • An image forming apparatus includes an image bearing member; a device for forming an image on the image bearing member; a device for transferring the image from the image bearing member to an image receiving material, the transfer device including a device for carrying the image receiving material to an image transfer position where the image transfer device is operable, and the carrying device is capable of supporting plural image receiving materials simultaneously; a device for fixing the image having been transferred onto the image receiving material, the fixing device being selectively operable at a first fixing speed and a second fixing speed which is lower than the first fixing speed; wherein when the fixing device operates at the second fixing speed, the carrying device carries only one image receiving material.
    • 图像形成装置包括:图像承载部件; 用于在图像承载部件上形成图像的装置; 用于将图像从图像承载部件传送到图像接收材料的装置,所述传送装置包括用于将图像接收材料传送到图像传送装置可操作的图像传送位置的装置,并且所述传送装置能够支撑 多个图像接收材料同时进行; 用于固定已经转印到图像接收材料上的图像的装置,所述定影装置可选择性地以第一定影速度和低于第一定影速度的第二定影速度操作; 其中当定影装置以第二定影速度工作时,承载装置仅承载一个图像接收材料。
    • 10. 发明授权
    • Image forming apparatus having a plurality of developing means
    • 具有多个显影装置的图像形成装置
    • US5636010A
    • 1997-06-03
    • US578447
    • 1995-12-26
    • Toshimitsu DanzukaTakeshi MenjoTakao Ogata
    • Toshimitsu DanzukaTakeshi MenjoTakao Ogata
    • G03G15/01G03G15/08G03G15/16G03G15/14
    • G03G15/0131G03G15/0173G03G15/0163G03G2215/0174
    • An image forming apparatus has a movable image bearing member, a plurality of developing devices operable for development at different locations along the direction of movement of the image bearing member to develop the image bearing member with toners of plural colors, and a transfer medium carrying member for carrying a transfer medium thereon and conveying the transfer medium to a transfer position. The toner images of plural colors on the image bearing member are superposition-transferred onto the transfer medium carried on the transfer medium carrying member. The transfer medium carrying member is capable of carrying a plurality of transfer mediums at different locations thereon. When the maximum length of the respective gaps between adjacent ones of the plurality of developing devices along the direction of movement of the image bearing member is D, the peripheral velocity of the transfer medium carrying member is U, and the peripheral velocity of the image bearing member is V, at least one of the gaps between adjacent ones of the plurality of transfer mediums carried on the transfer medium carrying member is greater than D.times.U/V.
    • 图像形成装置具有可移动图像承载部件,多个显影装置,可操作用于沿着图像承载部件的移动方向在不同位置显影,以使具有多种颜色的调色剂显影图像承载部件,以及转印介质承载部件 用于在其上承载转印介质并将转印介质输送到转印位置。 图像承载部件上的多种颜色的调色剂图像被叠加转印到承载在转印介质承载部件上的转印介质上。 转印介质承载构件能够在其上的不同位置承载多个转印介质。 当沿着图像承载部件的移动方向相邻的多个显影装置之间的相应间隙的最大长度为D时,转印介质承载部件的圆周速度为U,图像承载部件的圆周速度 构件是V,承载在传送介质承载构件上的多个传送介质中相邻的传送介质之间的间隙中的至少一个大于DxU / V。