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    • 33. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US5915145A
    • 1999-06-22
    • US898046
    • 1997-07-18
    • Masaru ShimuraHiroaki Sakai
    • Masaru ShimuraHiroaki Sakai
    • G03G15/16G03G15/20
    • G03G15/1675G03G2215/1614
    • An image forming apparatus including an image bearing member, a transfer member cooperating with the image bearing member to form a nip therebetween for transferring an image from the image bearing member to a transfer material in the nip, and a control system for performing constant current control of the transfer member when the transfer material is not present in the nip and for performing constant voltage control of the transfer member with a voltage based on a voltage obtained while in constant current control, during image transferring to the transfer material. When the transfer material is not present in the nip, a predetermined voltage is applied to the transfer member and current flowing through the transfer member is detected, and, when a change in the current is decreased below a predetermined value, the constant current control is started.
    • 一种图像形成装置,包括图像承载部件,与图像承载部件协作以在图像承载部件之间形成辊隙以将图像从图像承载部件传送到辊隙中的转印材料的转印部件,以及用于执行恒定电流控制的控制系统 当转印材料不存在于辊隙中并且在图像转印到转印材料期间以基于在恒定电流控制中获得的电压的电压进行转印部件的恒定电压控制时的转印部件。 当转印材料不存在于辊隙中时,向转印部件施加预定电压,并检测流过转印部件的电流,并且当电流变化降低到预定值以下时,恒定电流控制 开始了
    • 36. 发明授权
    • Image forming apparatus with heater
    • 带加热器的图像形成装置
    • US08693910B2
    • 2014-04-08
    • US13289615
    • 2011-11-04
    • Yuko SekiharaHiroaki SakaiHiroyuki Sakakibara
    • Yuko SekiharaHiroaki SakaiHiroyuki Sakakibara
    • G03G15/20
    • G03G15/205G03G2215/2035
    • An image forming apparatus includes an image forming unit, a fixing unit, and a power control unit. The image forming unit forms an unfixed image on a recording material. The fixing unit includes an endless belt, a heater held in contact with the endless belt, a pressurization roller to form a fixing nip portion for pinching and conveying the recording material together with the heater via the endless belt, and a pressure changing mechanism to effect switching between a pressurization state and a pressure release state. The power control unit controls power to the heater. In response to transitioning from the pressure release state to the pressurization state, the power control unit starts power to the heater during a transition period before the pressurization state is attained and controls power to the heater such that a heater temperature does not exceed a predetermined upper limit temperature during the transition period.
    • 图像形成装置包括图像形成单元,定影单元和电力控制单元。 图像形成单元在记录材料上形成未定影图像。 固定单元包括环形带,与环形带接触的加热器,加压辊,用于形成定影夹持部,用于通过环形带与加热器一起夹持和传送记录材料;以及压力改变机构, 在加压状态和压力释放状态之间切换。 电源控制单元控制加热器的电源。 响应于从压力释放状态转换到加压状态,功率控制单元在达到加压状态之前的过渡期间开始向加热器供电,并且控制加热器的电力,使得加热器温度不超过预定的上限 在过渡期间限制温度。
    • 38. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08308255B2
    • 2012-11-13
    • US12615998
    • 2009-11-10
    • Hiroaki Sakai
    • Hiroaki Sakai
    • B41J29/38B41J2/155
    • G06K15/102
    • An image forming apparatus includes a plurality of controllers that controls nozzle groups for forming an image on an image forming medium based on image data; a plurality of distribution processing units that are connected to a portion of the controllers to transmit to the controllers image data for controlling the nozzle groups allocated to the controllers; and a transmitting processing unit that transmits the image data to the distribution processing unit. Upper and lower level distribution processing units from the first distribution processing unit at the uppermost level to the second distribution processing unit at the lowermost level are communicatably connected to each other. The first distribution processing unit is communicatably connected to the transmitting processing unit.
    • 图像形成装置包括:多个控制器,其基于图像数据控制用于在图像形成介质上形成图像的喷嘴组; 多个分配处理单元,连接到控制器的一部分以向控制器传送用于控制分配给控制器的喷嘴组的图像数据; 以及将图像数据发送到分发处理单元的发送处理单元。 从最上层的第一分发处理单元到最下层的第二分发处理单元的上层和下层分发处理单元彼此可通信地连接。 第一分发处理单元可通信地连接到发送处理单元。