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    Image forming apparatus
    2.
    发明公开
    Image forming apparatus 审中-公开
    成像设备

    公开(公告)号：EP2642348A2

    公开(公告)日：2013-09-25

    申请号：EP13156780.2

    申请日：2013-02-26

    申请人： Canon Kabushiki Kaisha

    发明人： Kubo, Kenta ,  Horie, Juun ,  Moriya, Shuji ,  Miyazawa, Tomoaki ,  Usami, Hirokazu ,  Ishida, Tomohito ,  Haraguchi, Manami ,  Yamamoto, Takeshi

    IPC分类号： G03G15/06 ,  G03G15/00

    CPC分类号： G03G15/0849 ,  G03G15/0907 ,  G03G2215/0648

    摘要： An image forming apparatus (100) includes a photosensitive drum (3); a first sleeve (21) for carrying a developer containing toner and a carrier having a volume resistivity lower than that of the toner and for developing an image on the drum by rubbing the drum with the developer; a second sleeve (31) for carrying the developer received from the first sleeve and for developing the image by rubbing the drum with the developer carried on the second sleeve; a voltage source (40) for applying a developing bias voltage including a DC voltage component and an AC voltage component to the first sleeve and second sleeve; and a driving device (50) for rotating the first sleeve at a peripheral speed higher than the drum and one (60) for rotating the second sleeve at a peripheral speed which is higher than that of the drum and which is lower than that of the first sleeve.

    摘要翻译： 图像形成装置（100）包括感光鼓（3）; 第一套筒（21），其承载含有调色剂的显影剂和体积电阻率小于调色剂体积电阻率的载体，并且通过用显影剂擦拭鼓而在鼓上显影图像; 第二套筒（31），用于承载从第一套筒接收的显影剂并通过用承载在第二套筒上的显影剂摩擦鼓筒来显影图像; 电压源（40），用于向第一套筒和第二套筒施加包括直流电压分量和交流电压分量的显影偏压; 和驱动装置（50），用于以高于滚筒的圆周速度旋转第一套筒，以及一个（60），用于以比滚筒高的圆周速度旋转第二套筒，并且该圆周速度低于滚筒 第一个袖子。

    Image forming apparatus
    4.
    发明公开
    Image forming apparatus 审中-公开
    成像设备

    公开(公告)号：EP1983385A2

    公开(公告)日：2008-10-22

    申请号：EP08154805.9

    申请日：2008-04-18

    申请人： CANON KABUSHIKI KAISHA

    发明人： Miyazawa, Tomoaki ,  Yamamoto, Takeshi ,  Haraguchi, Manami ,  Kubo, Kenta ,  Horie, Juun

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0907 ,  G03G2215/0607

    摘要： An image forming apparatus includes a photosensitive drum to which an electrostatic image is formed and a developing sleeve carrying a developer including toner carrier. An alternating voltage is applied to the sleeve to form an alternating electric field between the sleeve and the drum to develop the electrostatic image with the developer. A relation |K1|

    摘要翻译： 图像形成设备包括形成有静电图像的感光鼓和承载包括调色剂载体的显影剂的显影套筒。 将交流电压施加到套筒以在套筒和鼓之间形成交变电场以用显影剂显影静电图像。 关系| K1 | <| K2 | K1：电场强度Ed = |（Vp2-VL）/ D |时的斜率，K2：电场强度Eb = |（Vp1-VL）/ D |时的斜率，VL：电位 [V]，其中获得最大密度的静电图像，Vp1：提供使调色剂向鼓移动的电位差的峰电位[V]，Vp2：提供电位差的峰电位[V]， 将墨粉移向套筒，D：感光鼓与套筒之间的最近距离[m]。

    Image forming method
    5.
    发明公开
    Image forming method 有权
    BILDERZEUGUNGSVERFAHREN

    公开(公告)号：EP2565716A1

    公开(公告)日：2013-03-06

    申请号：EP12181950.2

    申请日：2012-08-28

    申请人： Canon Kabushiki Kaisha

    发明人： Horie, Juun ,  Yamamoto, Takeshi ,  Baba, Yoshinobu ,  Ishigami, Koh

    IPC分类号： G03G9/107 ,  G03G9/113 ,  G03G13/00

    CPC分类号： G03G9/113 ,  G03G9/107 ,  G03G9/1075 ,  G03G15/065

    摘要： An image forming method using a two component developing system is provided in which a print speed is not less than 300 mm/s, a peak-to-peak voltage of an AC component in a developing bias is not more than 1.3 kV, a sufficient image density can be ensured, and a recorded image having a small amount of magnetic carrier remains on the image and having high image quality can be obtained. A magnetic carrier that forms a two component developer contains a magnetic core and a resin. The magnetic core is a ferrite containing Sr and Ca inside thereof at the same time, having a small crystal grain diameter, a high density crystal-grain boundary structure, and an extremely large capacitance of the grain boundary. Use of the ferrite can provide the above method.

    摘要翻译： 提供一种使用双组分显影系统的图像形成方法，其中打印速度不小于300mm / s，显影偏压中的AC分量的峰 - 峰电压不大于1.3kV，足够 可以确保图像浓度，并且可以获得具有少量磁性载体的记录图像保留在图像上并且具有高图像质量。 形成双组分显影剂的磁性载体含有磁芯和树脂。 磁芯是同时具有其中的Sr和Ca的铁素体，具有小的晶粒直径，高密度晶粒边界结构和极大的晶界电容。 使用铁氧体可以提供上述方法。

    Image forming apparatus
    7.
    发明公开
    Image forming apparatus 有权
    成像设备

    公开(公告)号：EP2151720A1

    公开(公告)日：2010-02-10

    申请号：EP09167377.2

    申请日：2009-08-06

    申请人： Canon Kabushiki Kaisha

    发明人： Horie, Juun ,  Yamamoto, Takeshi ,  Haraguchi, Manami ,  Kubo, Kenta ,  Miyazawa, Tomoaki ,  Usami, Hirokazu

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0806 ,  G03G2215/0607

    摘要： An image forming apparatus includes a developer carrying member to which a developing bias is applied. A frequency f of a developing bias waveform, a developing area S1 which is a time-integrated value of a difference between a voltage value of the developing bias and a solid electrostatic image potential VL in a developing period of the developing bias, a collecting area S2 which is a time-integrated value of a difference between the voltage value of the developing bias and VL in a collecting period of the developing bias, and a developing contrast value Vcon are used for defining a range of a value of the developing bias frequency f, a range of a value of a voltage change rate α at VL during transition of the developing bias voltage value from a developing-side voltage to a collecting-side voltage, and a range of a value represented by the formula: S ⁢ 1 - 1.28 × S ⁢ 2 × f / Vcon × exp - 2.0 × 10 - 5 × f / Hz .

    摘要翻译： 一种图像形成设备包括施加有显影偏压的显影剂承载部件。 显影偏压波形的频率f，作为显影偏压的显影期间的显影偏压的电压值与固体静电图像电位VL之差的时间积分值的显影区域S1，收集区域 S2是显影偏压的采集周期中显影偏压的电压值与VL之间的差的时间积分值，并且显影对比度值Vcon用于限定显影偏压频率的值的范围 f是显影偏压值从显影侧电压向收集侧电压转变期间在VL时的电压变化率α的值的范围，以及由下式表示的值的范围：S 1 -1.28×S⁢2×F / VCON×EXP-2.0×10-5×F /赫兹。

    Two component developer
    8.
    发明公开
    Two component developer 审中-公开
    ZWEIKOMPONENTENENTWICKLER

    公开(公告)号：EP2846192A1

    公开(公告)日：2015-03-11

    申请号：EP14187306.7

    申请日：2012-08-28

    申请人： Canon Kabushiki Kaisha

    发明人： Horie, Juun ,  Yamamoto, Takeshi ,  Baba, Yoshinobu ,  Ishigami, Koh

    IPC分类号： G03G9/107 ,  G03G9/113 ,  G03G15/06

    CPC分类号： G03G9/113 ,  G03G9/107 ,  G03G9/1075 ,  G03G15/065

    摘要： An image forming method using a two component developing system is provided in which a print speed is not less than 300 mm/s, a peak-to-peak voltage of an AC component in a developing bias is not more than 1.3 kV, a sufficient image density can be ensured, and a recorded image having a small amount of magnetic carrier remains on the image and having high image quality can be obtained. A magnetic carrier that forms a two component developer contains a magnetic core and a resin. The magnetic core is a ferrite containing Sr and Ca inside thereof at the same time, having a small crystal grain diameter, a high density crystal-grain boundary structure, and an extremely large capacitance of the grain boundary. Use of the ferrite can provide the above method.

    摘要翻译： 提供一种使用双组分显影系统的图像形成方法，其中打印速度不小于300mm / s，显影偏压中的AC分量的峰 - 峰电压不大于1.3kV，足够 可以确保图像浓度，并且可以获得具有少量磁性载体的记录图像保留在图像上并且具有高图像质量。 形成双组分显影剂的磁性载体含有磁芯和树脂。 磁芯是同时具有其中的Sr和Ca的铁素体，具有小的晶粒直径，高密度晶粒边界结构和极大的晶界电容。 使用铁氧体可以提供上述方法。

    Image forming apparatus
    10.
    发明公开
    Image forming apparatus 审中-公开
    成像设备

    公开(公告)号：EP2642345A2

    公开(公告)日：2013-09-25

    申请号：EP13155366.1

    申请日：2013-02-15

    申请人： CANON KABUSHIKI KAISHA

    发明人： Miyazawa, Tomoaki ,  Kubo, Kenta ,  Ishida, Tomohito ,  Moriya, Shuji ,  Usami, Hirokazu ,  Horie, Juun ,  Haraguchi, Manami ,  Yamamoto, Takeshi

    IPC分类号： G03G15/00 ,  G03G15/06

    CPC分类号： G03G13/08 ,  G03G15/0813 ,  G03G15/09 ,  G03G15/5008

    摘要： An image forming apparatus includes: an image bearing member (1); an electrostatic image forming device; and a developer carrying member (41). The developer carrying member is provided so as to be rotated in a direction opposite to a rotational direction of the image bearing member at a peripheral speed higher than that of the image bearing member. When the peripheral speed of the image bearing member is Vp (m/sec), the peripheral speed of the developer carrying member is Vs (m/sec), and a time, of movement of the developer from the surface of the developer carrying member to the image bearing member, actually measured in a gap between the image bearing member and the developer carrying member is Tsd (sec), the peripheral speeds Vp and Vs and the time Tsd satisfy the following relationship: (Vs-Vp) x Tsd 5 (m).

    摘要翻译： 一种图像形成设备包括：图像承载部件（1） 静电图像形成装置; 和显影剂承载部件（41）。 显影剂承载部件被设置成以与图像承载部件的旋转方向相反的方向以高于图像承载部件的圆周速度旋转。 当图像承载部件的圆周速度为Vp（m / sec）时，显影剂承载部件的圆周速度为Vs（m / sec），显影剂从显影剂承载部件的表面移动的时间 （秒），圆周速度Vp和Vs以及时间Tsd满足以下关系式：（Vs-Vp）×Tsd < 3x105（m）。