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公开(公告)号：US08437678B2
公开(公告)日：2013-05-07
申请号：US12552892
申请日：2009-09-02
IPC分类号： G03G21/00
CPC分类号： G03G15/065 , G03G15/0812
摘要： An image forming apparatus includes a developer bearing member configured to bear a developer to develop a latent image, a developer regulating member configured to regulate an amount of the developer carried on the bearing member, a voltage application unit that can apply a plurality of direct current voltages of different values between the bearing member and the regulating member, and a current detection unit that can detect a plurality of direct currents of different values flowing in the regulating member when the voltage application unit applies the plurality of direct current voltages, wherein the image forming apparatus sets a direct current voltage value Vb applied by the voltage application unit when developing the latent image, so that the following expression is satisfied: |Vb|>|Vbmin|, where Vbmin indicates a direct current voltage value when the direct current detected by the current detection unit is a minimum value.
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公开(公告)号：US20090003863A1
公开(公告)日：2009-01-01
申请号：US12118286
申请日：2008-05-09
IPC分类号： G03G15/10
CPC分类号： G03G15/0818 , G03G15/0808 , G03G2215/0135
摘要： A developing apparatus in which a toner has a volume-average particle diameter R that is in a range of 4.0 μm≦R≦6.2 μm, a developing roller has an arithmetic mean roughness Ra (μm) that is not more than 0.10 times the volume-average particle diameter R of the toner, a voltage applied to a supply roller is of negative polarity, that is, a normal charging polarity of the toner, triboelectrification polarity of the supply roller with respect to the toner is negative, that is, of the normal charging polarity of the toner, and an abutment width S in which the developing roller and the supply roller abut each other is in a range of 2.5 mm≦S≦5.5 mm.
摘要翻译： 一种显影装置，其中调色剂的体积平均粒径R在4.0μm<= R <=6.2μm的范围内，显影辊的算术平均粗糙度Ra（mum）不大于0.10倍 调色剂的体积平均粒径R，施加到供给辊的电压为负极性，即调色剂的正常充电极性，供给辊相对于调色剂的摩擦带电极性为负，也就是说 的调色剂的正常充电极性，以及显影辊和供给辊彼此抵接的抵接宽度S在2.5mm≤S<= 5.5mm的范围内。
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公开(公告)号：US20100061749A1
公开(公告)日：2010-03-11
申请号：US12552892
申请日：2009-09-02
CPC分类号： G03G15/065 , G03G15/0812
摘要： An image forming apparatus includes a developer bearing member configured to bear a developer to develop a latent image, a developer regulating member configured to regulate an amount of the developer carried on the bearing member, a voltage application unit that can apply a plurality of direct current voltages of different values between the bearing member and the regulating member, and a current detection unit that can detect a plurality of direct currents of different values flowing in the regulating member when the voltage application unit applies the plurality of direct current voltages, wherein the image forming apparatus sets a direct current voltage value Vb applied by the voltage application unit when developing the latent image, so that the following expression is satisfied: |Vb|>|Vbmin|, where Vbmin indicates a direct current voltage value when the direct current detected by the current detection unit is a minimum value.
摘要翻译： 图像形成装置包括构造成承载显影剂以显影潜像的显影剂承载构件，被配置为调节承载在轴承构件上的显影剂的量的显影剂调节构件，可施加多个直流电的电压施加单元 在所述电压施加单元施加所述多个直流电压时，可以检测在所述调节构件中流动的不同值的多个直流电流的电流检测单元，其中，所述图像 成像装置在显影潜像时设定由电压施加部施加的直流电压值Vb，从而满足以下表达式：| Vb |> | Vbmin |其中，Vbmin表示当检测到直流电流时的直流电压值 由当前检测单位是最小值。
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公开(公告)号：US07773923B2
公开(公告)日：2010-08-10
申请号：US12118286
申请日：2008-05-09
IPC分类号： G03G15/08
CPC分类号： G03G15/0818 , G03G15/0808 , G03G2215/0135
摘要： A developing apparatus in which a toner has a volume-average particle diameter R that is in a range of 4.0 μm≦R≦6.2 μm, a developing roller has an arithmetic mean roughness Ra (μm) that is not more than 0.10 times the volume-average particle diameter R of the toner, a voltage applied to a supply roller is of negative polarity, that is, a normal charging polarity of the toner, triboelectrification polarity of the supply roller with respect to the toner is negative, that is, of the normal charging polarity of the toner, and an abutment width S in which the developing roller and the supply roller abut each other is in a range of 2.5 mm≦S≦5.5 mm.
摘要翻译： 一种显影装置，其中调色剂的体积平均粒径R在4.0μm＆nlE; R＆lt; lE;6.2μm的范围内，显影辊的算术平均粗糙度Ra（μm）不大于体积的0.10倍 调色剂的平均粒径R，施加到供给辊的电压为负极性，即调色剂的正常充电极性，供给辊相对于调色剂的摩擦带电极性为负，即为 调色剂的正常充电极性以及显影辊和供给辊彼此抵接的抵接宽度S在2.5mm＆lt; NlE; S＆lt; lE; 5.5mm的范围内。
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公开(公告)号：US08019260B2
公开(公告)日：2011-09-13
申请号：US12765344
申请日：2010-04-22
申请人： Rie Endo , Shuji Moriya , Katsuhiro Sakaizawa , Norio Takahashi
发明人： Rie Endo , Shuji Moriya , Katsuhiro Sakaizawa , Norio Takahashi
IPC分类号： G03G15/08
CPC分类号： G03G15/065 , G03G2215/0634
摘要： An image forming apparatus includes an image bearing member; a developer carrying member, contactable to the image bearing member, for carrying a developer to a developing position to develop an electrostatic image formed on the image bearing member with the developer; a supplying member for supplying the developer to the developer carrying member, wherein a peripheral speed of the developer carrying member is not less than 1.05 times and not more than 1.20 times a peripheral speed of the image bearing member, and an arithmetic average roughness Ra is not less than 0.20 times and not more than 0.33 times a volume average particle size of the developer, wherein a potential applied to the supplying member is different from a potential applied to the developer carrying member toward a larger potential of a regular charge polarity of the developer.
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公开(公告)号：US20070098459A1
公开(公告)日：2007-05-03
申请号：US11589144
申请日：2006-10-30
申请人： Rie Endo , Shuji Moriya , Katsuhiro Sakaizawa , Norio Takahashi
发明人： Rie Endo , Shuji Moriya , Katsuhiro Sakaizawa , Norio Takahashi
IPC分类号： G03G15/08
CPC分类号： G03G15/065 , G03G2215/0634
摘要： An image forming apparatus includes an image bearing member; a developer carrying member, contactable to the image bearing member, for carrying a developer to a developing position to develop an electrostatic image formed on the image bearing member with the developer; a supplying member for supplying the developer to the developer carrying member, wherein a peripheral speed of the developer carrying member is not less than 1.05 times and not more than 1.20 times a peripheral speed of the image bearing member, and an arithmetic average roughness Ra is not less than 0.20 times and not more than 0.33 times a volume average particle size of the developer, wherein a potential applied to the supplying member is different from a potential applied to the developer carrying member toward a larger potential of a regular charge polarity of the developer.
摘要翻译： 图像形成装置包括：图像承载部件; 显影剂承载构件，可接触图像承载构件，用于将显影剂携带到显影位置以使显影剂形成在图像承载构件上形成静电图像; 用于将显影剂供应到显影剂承载构件的供应构件，其中显影剂承载构件的圆周速度不小于图像承载构件的圆周速度的1.05倍且不大于1.20倍，并且算术平均粗糙度Ra为 不小于显影剂的体积平均粒径的0.20倍且不大于0.33倍，其中施加到供给构件的电位不同于施加到显影剂承载构件的电位朝向较大的电荷极性的电位 开发者
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公开(公告)号：US20090003892A1
公开(公告)日：2009-01-01
申请号：US12145998
申请日：2008-06-25
申请人： Katsuhiro Sakaizawa , Norio Takahashi , Shuji Moriya , Rie Endo
发明人： Katsuhiro Sakaizawa , Norio Takahashi , Shuji Moriya , Rie Endo
IPC分类号： G03G15/08
CPC分类号： G03G15/0812 , G03G2215/0177
摘要： An image forming apparatus is provided, which controls an appropriate developer amount for a desired image so that an image defect such as an unclear font or a white area is prevented, resulting in a stable image formation for a long term. A developer regulating member has a resistance value varying depending on a voltage to be applied. A control device changes over the voltage to be applied to the developer regulating member during the image formation according to image information and changes a potential difference between the developer carrying member and the developer regulating member.
摘要翻译： 提供了一种图像形成装置，其对期望的图像控制合适的显影剂量，使得防止诸如不清楚的字体或白色区域的图像缺陷，导致长期稳定的图像形成。 显影剂调节构件具有根据要施加的电压而变化的电阻值。 控制装置根据图像信息改变在图像形成期间施加到显影剂调节构件的电压，并改变显影剂承载构件和显影剂调节构件之间的电位差。
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公开(公告)号：US07962076B2
公开(公告)日：2011-06-14
申请号：US11589144
申请日：2006-10-30
申请人： Rie Endo , Shuji Moriya , Katsuhiro Sakaizawa , Norio Takahashi
发明人： Rie Endo , Shuji Moriya , Katsuhiro Sakaizawa , Norio Takahashi
IPC分类号： G03G15/08
CPC分类号： G03G15/065 , G03G2215/0634
摘要： An image forming apparatus includes an image bearing member; a developer carrying member, contactable to the image bearing member, for carrying a developer to a developing position to develop an electrostatic image formed on the image bearing member with the developer; a supplying member for supplying the developer to the developer carrying member, wherein a peripheral speed of the developer carrying member is not less than 1.05 times and not more than 1.20 times a peripheral speed of the image bearing member, and an arithmetic average roughness Ra is not less than 0.20 times and not more than 0.33 times a volume average particle size of the developer, wherein a potential applied to the supplying member is different from a potential applied to the developer carrying member toward a larger potential of a regular charge polarity of the developer.
摘要翻译： 图像形成装置包括：图像承载部件; 显影剂承载构件，可接触图像承载构件，用于将显影剂携带到显影位置以使显影剂形成在图像承载构件上形成静电图像; 用于将显影剂供应到显影剂承载构件的供应构件，其中显影剂承载构件的圆周速度不小于图像承载构件的圆周速度的1.05倍且不大于1.20倍，并且算术平均粗糙度Ra为 不小于显影剂的体积平均粒径的0.20倍且不大于0.33倍，其中施加到供给构件的电位不同于施加到显影剂承载构件的电位朝向较大的电荷极性的电位 开发者
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公开(公告)号：US07734205B2
公开(公告)日：2010-06-08
申请号：US12145998
申请日：2008-06-25
申请人： Katsuhiro Sakaizawa , Norio Takahashi , Shuji Moriya , Rie Endo
发明人： Katsuhiro Sakaizawa , Norio Takahashi , Shuji Moriya , Rie Endo
IPC分类号： G03G15/06
CPC分类号： G03G15/0812 , G03G2215/0177
摘要： An image forming apparatus is provided, which controls an appropriate developer amount for a desired image so that an image defect such as an unclear font or a white area is prevented, resulting in a stable image formation for a long term. A developer regulating member has a resistance value varying depending on a voltage to be applied. A control device changes over the voltage to be applied to the developer regulating member during the image formation according to image information and changes a potential difference between the developer carrying member and the developer regulating member.
摘要翻译： 提供了一种图像形成装置，其对期望的图像控制合适的显影剂量，使得防止诸如不清楚的字体或白色区域的图像缺陷，导致长期稳定的图像形成。 显影剂调节构件具有根据要施加的电压而变化的电阻值。 控制装置根据图像信息改变在图像形成期间施加到显影剂调节构件的电压，并改变显影剂承载构件和显影剂调节构件之间的电位差。
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公开(公告)号：US08796898B2
公开(公告)日：2014-08-05
申请号：US13139889
申请日：2009-12-15
申请人： Yutaka Hashiba , Kazuto Sakai , Norio Takahashi , Kazuaki Yuuki , Masanori Arata , Yusuke Matsuoka , Motoyasu Mochizuki , Tadashi Tokumasu
发明人： Yutaka Hashiba , Kazuto Sakai , Norio Takahashi , Kazuaki Yuuki , Masanori Arata , Yusuke Matsuoka , Motoyasu Mochizuki , Tadashi Tokumasu
CPC分类号： H02K15/03 , H02K1/02 , H02K1/223 , H02K1/2766 , H02K21/028 , Y10T29/49009 , Y10T29/49012
摘要： According to one embodiment, a rotor is configured by a rotor core and magnetic poles. Two or more types of permanent magnets are used such that each product of coercivity and thickness in the magnetization direction becomes different. A stator is located outside the rotor with air gap therebetween and configured by an armature core winding. At least one permanent magnet is magnetized by a magnetic field by a current of the armature winding to change a magnetic flux content thereof irreversibly. A short circuited coil is provided to surround a magnetic path portion of the other permanent magnet excluding the magnet changed irreversibly and a portion adjacent to the other permanent magnet where the magnetic flux leaks. A short-circuit current is generated in the short circuited coil by the magnetic flux generated by conducting a magnetization current to the winding. A magnetic field is generated by the short-circuit current.
摘要翻译： 根据一个实施例，转子由转子芯和磁极构成。 使用两种或更多种类型的永磁体，使得矫顽力和磁化方向上的厚度的每个乘积变得不同。 定子位于转子外部，其间具有气隙，并由电枢铁心绕组构成。 至少一个永磁体被电枢绕组的电流通过磁场磁化，以不可逆地改变其磁通量。 设置短路线圈以围绕除了不可逆地改变的磁体之外的另一个永磁体的磁路部分和与磁通量泄漏的另一个永久磁铁相邻的部分。 短路电流由短路线圈产生的磁通量通过向绕组施加磁化电流而产生。 由短路电流产生磁场。
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