Image forming apparatus with a changeable transfer bias for transferring a toner patch image
    1.
    发明授权
    Image forming apparatus with a changeable transfer bias for transferring a toner patch image 失效
    具有用于转印调色剂贴片图像的可变转印偏压的图像形成装置

    公开(公告)号:US07035562B1

    公开(公告)日:2006-04-25

    申请号:US09597210

    申请日:2000-06-20

    IPC分类号: G03G15/00

    摘要: An image forming apparatus includes an image bearing member for carrying a toner image; an image forming unit for forming a toner image on the image bearing member; a transfer material carrying member, for carrying a transfer material, wherein the toner image is transferred onto a transfer material carried on the transfer material carrying member or onto the transfer material carrying member; a density detecting unit for detecting a density of the toner image transferred to the transfer material carrying member; wherein a transfer intensity is smaller when the toner image for density detection is transferred onto the transfer material carrying member than when the toner image is transferred onto the transfer material carried on the transfer material carrying member.

    摘要翻译: 图像形成装置包括用于承载调色剂图像的图像承载部件; 图像形成单元,用于在图像承载部件上形成调色剂图像; 用于承载转印材料的转印材料承载构件,其中调色剂图像被转印到承载在转印材料承载构件上的转印材料上或转印材料承载构件上; 密度检测单元,用于检测转印到转印材料承载构件上的调色剂图像的浓度; 其中当用于密度检测的调色剂图像转印到转印材料承载构件上时,与将调色剂图像转印到承载在转印材料承载构件上的转印材料上相比,转印强度较小。

    Image forming apparatus for controlling transfer intensity by detecting
toner test images
    2.
    发明授权
    Image forming apparatus for controlling transfer intensity by detecting toner test images 失效
    用于通过检测调色剂测试图像来控制转印强度的图像形成装置

    公开(公告)号:US6091913A

    公开(公告)日:2000-07-18

    申请号:US521835

    申请日:1995-08-31

    IPC分类号: G03G15/01 G03G15/00 G03G15/16

    摘要: An image forming apparatus includes an image bearing member for carrying a toner image; an image forming unit for forming a toner test image on the image bearing member; a transfer material carrying member, for carrying a transfer material, wherein the test toner image is transferred onto a transfer material carried on the transfer material carrying member or onto the transfer material carrying member; and a density detecting unit for detecting a density of the toner test image transferred to the transfer material carrying member. A transfer intensity is smaller when the toner test image for density detection is transferred onto the transfer material carrying member than when the toner test image is transferred onto the transfer material tarried an the transfer material carrying member. The transfer intensity also changes depending on whether the transferred toner test image is the first color toner test image or the second toner test image, and depending on an ambient condition sensor.

    摘要翻译: 图像形成装置包括用于承载调色剂图像的图像承载部件; 图像形成单元,用于在图像承载部件上形成调色剂测试图像; 用于承载转印材料的转印材料承载构件,其中所述测试调色剂图像被转印到承载在所述转印材料承载构件上或转印材料承载构件上的转印材料上; 以及密度检测单元,用于检测转印到转印材料承载构件上的调色剂测试图像的浓度。 当将调色剂测试图像转印到转印材料承载构件上的转印材料上时,当用于浓度检测的调色剂测试图像转印到转印材料承载构件上时,转印强度较小。 转印强度也根据转印的调色剂测试图像是第一颜色调色剂测试图像还是第二调色剂测试图像而变化,并且取决于环境条件传感器。

    Image forming apparatus
    3.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号:US6016418A

    公开(公告)日:2000-01-18

    申请号:US934136

    申请日:1997-09-19

    CPC分类号: G03G15/1675 G03G2215/0177

    摘要: An image forming apparatus includes an image bearing member for electrostatically bearing a toner image; a dielectric member movable along an endless path through a transfer position of the image bearing member; an electroconductive member in contact with the dielectric member at a side remote from the image bearing member, wherein the electroconductive member is supplied with a voltage having a polarity opposite from that of a charge polarity of the toner image to transfer the toner image from the image bearing member onto the dielectric member at the transfer position; wherein the electroconductive member is electrically grounded to generate an electric field for transferring the toner from the dielectric member to the image bearing member at the transfer position.

    摘要翻译: 图像形成装置包括用于静电承载调色剂图像的图像承载部件; 电介质构件,其沿着环形路径移动通过图像承载构件的转移位置; 与远离图像承载部件的一侧与电介质部件接触的导电部件,其中导电部件被提供具有与调色剂图像的极性相反的极性的电压,以从图像转印调色剂图像 承载构件在所述转移位置处到所述电介质构件上; 其中所述导电构件被电接地以产生电场,用于在所述转移位置将所述调色剂从所述电介质构件转印到所述图像承载构件。

    Image forming apparatus
    4.
    发明授权
    Image forming apparatus 失效
    图像形成装置

    公开(公告)号:US5608505A

    公开(公告)日:1997-03-04

    申请号:US640000

    申请日:1996-04-30

    CPC分类号: G03G15/1685 G03G15/0131

    摘要: An image forming apparatus includes an electrophotographic photosensitive member; a charger for charging the photosensitive member to form an electrostatic latent image on the photosensitive member; an exposure device for exposing the photosensitive member to image light; a developing device for developing the latent image with toner; a transfer member contactable to the photosensitive member at a transfer position, the transfer member comprising an electrically conductive base, a high resistance surface layer, and a low resistance or intermediate resistance conductive layer between the conductive base and the surface layer; and transfer voltage applying device for applying a transfer voltage to the transfer member; wherein Ws>Wt>Wp>W1 is satisfied, where Ws is a width of a photosensitive layer measured in a direction perpendicular to a movement direction of the photosensitive member, W1 is an image exposure width of the exposure device, Wp is a width of a transfer material usable with the image forming apparatus, and Wt is an overlapping width between a charging width of the charger and the width of the conductive layer of the transfer member.

    摘要翻译: 图像形成装置包括电子照相感光构件; 用于对感光构件充电以在感光构件上形成静电潜像的充电器; 曝光装置,用于将感光构件曝光成图像光; 用调色剂显影潜像的显影装置; 所述转印构件在转印位置处与所述感光构件接触,所述转印构件包括在所述导电基底和所述表面层之间的导电基底,高电阻表面层和低电阻或中间电阻导电层; 以及用于向转印部件施加转印电压的转印电压施加装置; 其中Ws> Wt> Wp> W1,其中Ws是在与感光构件的移动方向垂直的方向上测量的感光层的宽度,W1是曝光装置的图像曝光宽度,Wp是 可与图像形成装置一起使用的转印材料,并且Wt是充电器的充电宽度与转印部件的导电层的宽度之间的重叠宽度。

    Image forming apparatus comprising a mechanism for positioning a
rotatable member and a transfer drum
    5.
    发明授权
    Image forming apparatus comprising a mechanism for positioning a rotatable member and a transfer drum 失效
    图像形成装置包括用于定位可旋转构件和转印鼓的机构

    公开(公告)号:US5715506A

    公开(公告)日:1998-02-03

    申请号:US412120

    申请日:1995-03-28

    IPC分类号: G03G15/00 G03G15/01 G03G15/16

    CPC分类号: G03G15/167 G03G15/0131

    摘要: An image forming apparatus has a recording medium bearing member bearing a recording medium thereon and rotatable, the recording medium bearing member having in the surface thereof a recess extending in the direction of the rotary shaft thereof, image formation being effected on the recording medium born on the recording medium bearing member, and a rotatable member abutted against the recording medium bearing member, the rotatable member being provided with a abutting portion abutted against the recording medium bearing member, and a regulating portion adapted to abut against the recording medium bearing member when the recess and the rotatable member become opposed to each other. Thus, the distance between the recess and the bearing portion, is regulated the rotatable member being movable between a first position in which the abutting portion abuts against the recording medium bearing member and a second position in which the regulating portion abuts against the recording medium bearing member. The regulating portion is spaced apart from the recording medium bearing member when the abutting portion is abutted against the recording medium bearing member.

    摘要翻译: 图像形成装置具有记录介质承载部件,该记录介质承载部件在其上可旋转地承载有记录介质,记录介质承载部件在其表面上具有沿其旋转轴的方向延伸的凹部,图像形成是在记录介质上生成的 所述记录介质承载部件和与所述记录介质承载部件抵接的可旋转部件,所述可旋转部件设置有抵靠所述记录介质承载部件的抵接部,以及限制部,其适于在所述记录介质承载部件 并且可旋转构件彼此相对。 因此,所述凹部与所述支承部之间的距离被调节,所述可旋转构件可在第一位置和第二位置之间移动,所述第一位置与所述抵接部抵靠在所述记录介质支承构件之间,所述第二位置中所述限制部分抵靠在所述记录介质轴承 会员。 当邻接部分抵靠记录介质承载部件时,调节部分与记录介质承载部件间隔开。

    Fixating device
    6.
    发明授权
    Fixating device 失效
    固定装置

    公开(公告)号:US5543904A

    公开(公告)日:1996-08-06

    申请号:US429240

    申请日:1995-04-25

    IPC分类号: G03G15/20 G05D23/19

    CPC分类号: G03G15/2039 G03G15/205

    摘要: A fixating device has a first rotatable member in contact with an unfixated image borne on a recording medium, a second rotatable member forming a nip together with the second rotatable member, a first heater for heating the first rotatable member, a second heater for heating the second rotatable member, and power supply controlling means for controlling the supply of electric power to the first heater and the second heater. The power supply controlling means is adapted to control the supply of electric power so that when the electric power supplied to the first heater is Wa and the electric power supplied to the second heater is Wb and the ratio when the recording medium is nipped between and conveyed by the first rotatable member and the second rotatable member is Dp=Wa/Wb and the ratio during standby is Ds=Wa/Wb, there may be established Dp>Ds.

    摘要翻译: 固定装置具有与承载在记录介质上的未分离图像接触的第一可旋转构件,与第二可旋转构件一起形成压区的第二可旋转构件,用于加热第一可旋转构件的第一加热器,用于加热第一可旋转构件的第二加热器 第二可旋转构件和用于控制向第一加热器和第二加热器供电的电源控制装置。 电源控制装置适于控制电力供应,使得当提供给第一加热器的电力为Wa并且供应给第二加热器的电力为Wb时,以及当记录介质被夹持并传送时的比率 通过第一可旋转构件和第二可旋转构件是Dp = Wa / Wb,并且待机期间的比例是Ds = Wa / Wb,可以建立Dp> Ds。

    Image forming apparatus including a transfer medium bearing member
having a sheet member for bearing a transfer medium thereon
    7.
    发明授权
    Image forming apparatus including a transfer medium bearing member having a sheet member for bearing a transfer medium thereon 失效
    图像形成装置包括具有用于在其上承载转印介质的片状部件的转印介质承载部件

    公开(公告)号:US5600423A

    公开(公告)日:1997-02-04

    申请号:US426836

    申请日:1995-04-24

    IPC分类号: G03G15/01 G03G15/16

    CPC分类号: G03G15/1685

    摘要: An image forming apparatus has an image bearing member bearing images thereon and movable, and a transfer medium bearing member provided in pressure contact with the image bearing member and bearing a transfer medium thereon and rotatable. The transfer medium bearing member has a sheet member for bearing the transfer medium thereon, and an elastic layer supporting that area of the sheet member bearing the transfer medium thereon from the inside of the sheet member. A voltage is applied to the transfer medium bearing member to transfer the images on the image bearing member to the transfer medium born on the sheet member. The sheet member has an area not fixed to the elastic layer. The transfer medium bearing member is rotated with a potential difference created between the image bearing member and the sheet member before the operation of transferring the images on the image bearing member to the transfer medium born on the sheet member is started.

    摘要翻译: 图像形成装置具有在其上可运动的图像的图像承载部件和与图像承载部件压力接触并且可转动地设置有转印介质的转印介质承载部件。 转印介质承载构件具有用于在其上承载转印介质的片状构件,以及从板构件的内部支撑其上承载有转印介质的片状构件的区域的弹性层。 向转印介质承载部件施加电压,将图像承载部件上的图像转印到片材上的转印介质上。 片材具有未固定到弹性层的区域。 在将图像承载部件上的图像转印到片状部件上的转印介质的操作开始之前,转印介质承载部件在图像承载部件和片材部件之间产生的电位差旋转。

    Toner adhesion preventing mechanism for image forming apparatus
    9.
    发明授权
    Toner adhesion preventing mechanism for image forming apparatus 失效
    图像形成装置的调色剂附着防止机构

    公开(公告)号:US5678151A

    公开(公告)日:1997-10-14

    申请号:US728167

    申请日:1996-10-09

    CPC分类号: G03G15/0131 G03G15/1685

    摘要: An image forming apparatus includes an image bearing member, an image forming means for forming a toner image on the image bearing member, a rotary member contacted with a surface of the image bearing member, a transfer member for transferring the toner image from the image bearing member to the rotary member, and a cleaning member for removing residual toner from the image bearing member. Wherein a longitudinal width of a contact area between the image bearing member and the rotary member is smaller than the length of the cleaning member.

    摘要翻译: 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调色剂图像的图像形成装置,与图像承载部件的表面接触的旋转部件,用于从图像承载部件转印调色剂图像的转印部件 以及用于从图像承载部件去除残留调色剂的清洁部件。 其中,图像承载部件和旋转部件之间的接触区域的纵向宽度小于清洁部件的长度。

    Control device for an attraction roller
    10.
    发明授权
    Control device for an attraction roller 失效
    吸引辊的控制装置

    公开(公告)号:US5761571A

    公开(公告)日:1998-06-02

    申请号:US728850

    申请日:1996-10-10

    CPC分类号: G03G15/167 G03G2215/1619

    摘要: An image forming apparatus has an image bearing member, a transfer material bearing member for bearing a transfer material onto which an image can be transferred from the image bearing member, an attract member for electrostatically attracting the transfer material to the transfer material bearing member, and a constant voltage control for effecting constant voltage control of the attract member with predetermined voltage. The total impedance of an attract circuit including the attract member and the constant voltage control means is 10.sup.6 .OMEGA. to 10.sup.10 .OMEGA..

    摘要翻译: 图像形成装置具有图像承载部件,用于承载转印材料的转印材料承载部件,能够从图像承载部件转印图像,用于将转印材料静电吸引到转印材料承载部件的吸引部件,以及 用于以预定电压对吸引构件进行恒定电压控制的恒定电压控制。 包括吸引构件和恒定电压控制装置的吸引电路的总阻抗为106欧姆至1010欧米加。