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.

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

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。

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

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。

公开(公告)号：US20100061749A1

公开(公告)日：2010-03-11

申请号：US12552892

申请日：2009-09-02

申请人： Kazunari Hagiwara ,  Norio Takahashi ,  Katsuhiro Sakaizawa ,  Rie Endo

发明人： Kazunari Hagiwara ,  Norio Takahashi ,  Katsuhiro Sakaizawa ,  Rie Endo

IPC分类号： G03G15/06 ,  G03G15/08

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。

公开(公告)号：US08437678B2

公开(公告)日：2013-05-07

申请号：US12552892

申请日：2009-09-02

申请人： Kazunari Hagiwara ,  Norio Takahashi ,  Katsuhiro Sakaizawa ,  Rie Endo

发明人： Kazunari Hagiwara ,  Norio Takahashi ,  Katsuhiro Sakaizawa ,  Rie Endo

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.

公开(公告)号：US20090003863A1

公开(公告)日：2009-01-01

申请号：US12118286

申请日：2008-05-09

申请人： Kazunari Hagiwara ,  Katsuhiro Sakaizawa ,  Norio Takahashi ,  Rie Endo

发明人： Kazunari Hagiwara ,  Katsuhiro Sakaizawa ,  Norio Takahashi ,  Rie Endo

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。

公开(公告)号：US07773923B2

公开(公告)日：2010-08-10

申请号：US12118286

申请日：2008-05-09

申请人： Kazunari Hagiwara ,  Katsuhiro Sakaizawa ,  Norio Takahashi ,  Rie Endo

发明人： Kazunari Hagiwara ,  Katsuhiro Sakaizawa ,  Norio Takahashi ,  Rie Endo

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。

公开(公告)号：US20070297834A1

公开(公告)日：2007-12-27

申请号：US11766507

申请日：2007-06-21

申请人： Shinichi Nishida ,  Katsunori Yokoyama ,  Yasushi Shimizu ,  Kazunari Hagiwara ,  Katsuhiro Sakaizawa ,  Rie Endo ,  Naoto Kichijima

发明人： Shinichi Nishida ,  Katsunori Yokoyama ,  Yasushi Shimizu ,  Kazunari Hagiwara ,  Katsuhiro Sakaizawa ,  Rie Endo ,  Naoto Kichijima

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

摘要： An amount-of-developer regulating apparatus configured to restrict the amount of developer carried on a developer bearing member. The amount-of-developer regulating apparatus includes a flexible developer amount regulation member having a contact portion configured to contact with a developer bearing member, and first and second holding portions configured to hold the developer amount regulation member and to contact with the developer amount regulation member at further upstream and further downstream in a direction where the developer bearing member is rotationally moved than the contact portion. With a pressure distribution of the contact portion as to the developer bearing member, there are a plurality of local maximum values in the direction where the developer bearing member is rotationally moved. Thus, the apparatus can be reduced in size, and also image concentration unevenness after long-term use can be prevented.

摘要翻译： 一种显影剂调节装置，其被配置为限制承载在显影剂承载部件上的显影剂的量。 显影剂量调节装置包括柔性显影剂量调节构件，其具有构造成与显影剂承载构件接触的接触部分，以及构造成保持显影剂量调节构件并与显影剂量调节剂接触的第一和第二保持部分 构件在显影剂承载构件比接触部分旋转移动的方向的更上游和更下游。 通过接触部分对显影剂承载部件的压力分布，在显影剂承载部件被旋转移动的方向上存在多个局部最大值。 因此，可以减小装置的尺寸，并且可以防止长期使用后的图像浓度不均匀。