公开(公告)号：US5655191A

公开(公告)日：1997-08-05

申请号：US549210

申请日：1995-10-27

申请人： Nobumasa Furuya ,  Takeshi Sumikawa ,  Shigehito Ando ,  Shinji Sasahara ,  Tadakazu Edure

发明人： Nobumasa Furuya ,  Takeshi Sumikawa ,  Shigehito Ando ,  Shinji Sasahara ,  Tadakazu Edure

IPC分类号： G03G15/01 ,  G03G15/06 ,  G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0907 ,  G03G15/0121

摘要： In a color image forming apparatus, as the second and subsequent development processes of the simultaneously transfer type, a non-contact type AC field double-element development is employed, and an absolute value of the difference between the maximum bias which provides the maximum toner developing electric field in the direction to the side of the latent image carrier and the average value of the developing bias is set larger than an absolute value of the difference between the minimum bias voltage which provides the minimum toner developing electric field in the direction to the side of the latent image carrier and the average value of the developing bias, while the bias voltage region located between the maximum bias voltage and the average bias voltage is set to a ratio of from 0.25 to 0.45 for one period of the AC voltage, and the frequency of the bias voltage is set from 4 kHz to 10 kHz.

摘要翻译： 在彩色图像形成装置中，作为同时转印型的第二次和随后的显影处理，采用非接触型AC场双元素显影，并且提供最大色调剂的最大偏差之间的差的绝对值 在潜像载体的侧面方向显影电场，并将显影偏压的平均值设定为大于在向着该方向移动的方向上提供最小调色剂显影电场的最小偏压之间的差的绝对值 潜像载体的一侧和显影偏压的平均值，而位于最大偏置电压和平均偏置电压之间的偏置电压区域在交流电压的一个周期内被设定为0.25至0.45的比率，以及 偏置电压的频率设置为4 kHz至10 kHz。

公开(公告)号：US5469245A

公开(公告)日：1995-11-21

申请号：US121238

申请日：1993-09-13

申请人： Taku Aoshima ,  Tsuneo Noami ,  Hiroh Soga ,  Takeshi Sumikawa ,  Nobumasa Furuya ,  Tadakazu Edure

发明人： Taku Aoshima ,  Tsuneo Noami ,  Hiroh Soga ,  Takeshi Sumikawa ,  Nobumasa Furuya ,  Tadakazu Edure

IPC分类号： G03G15/09

CPC分类号： G03G15/0921

摘要： The development apparatus of this invention includes a developer supporting body consisting of a rotatable non-magnetic sleeve and a magnet roll fixedly installed within the rotatable non-magnetic sleeve. The development method involves the following steps: a latent image formed on a latent image supporting body is developed or made visible with a two-component developer carried on the developer supporting body in a non-contact manner; a horizontal magnetic field which is orientated in the circumferential direction of the developer supporting body is applied to the developer in an effective development area on the developer supporting body, the effective development area facing the latent image supporting body; and a developer movement promotion magnetic field is applied locally to a part of the effective development area on the developer supporting body so that the developer is expelled from that part of the effective development area and that chains of carrier of the developer in the developer expelled region are slid in the circumferential direction of the developer supporting body. This development method ensures a sufficiently high development performance during the multicolor image forming process without disturbing the toner image formed.

摘要翻译： 本发明的显影装置包括由可旋转的非磁性套筒和固定地安装在可旋转非磁性套筒内的磁辊组成的显影剂支撑体。 显影方法包括以下步骤：在潜像支撑体上形成的潜像以不接触的方式携带在显影剂支撑体上的双组分显影剂显影或使其可见; 将显影剂支撑体的圆周方向的水平磁场施加到显影剂支撑体上的有效显影区域中的显影剂，该有效显影区域面向潜像支撑体; 并且显影剂运动促进磁场局部施加到显影剂支撑体上的有效显影区域的一部分上，使得显影剂从有效显影区域的该部分排出，并且显影剂排出区域中显影剂的载体链 在显影剂支承体的圆周方向上滑动。 该显影方法确保在多色图像形成过程中具有足够高的显影性能而不干扰形成的调色剂图像。

公开(公告)号：US5768666A

公开(公告)日：1998-06-16

申请号：US754778

申请日：1996-11-21

申请人： Isao Ito ,  Takeshi Sumikawa ,  Nobumasa Furuya ,  Shigehito Ando ,  Hideaki Tanaka

发明人： Isao Ito ,  Takeshi Sumikawa ,  Nobumasa Furuya ,  Shigehito Ando ,  Hideaki Tanaka

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/09 ,  G03G15/0822 ,  G03G2215/0609 ,  G03G2215/0838

摘要： A developing apparatus uses a dual-component developer containing a magnetic carrier and toner electrically attracted to the magnetic carrier for selectively transferring the toner to an electrostatic latent image formed on an image support for visualizing the latent image. The developing apparatus includes a developer transport member facing the image support and having a peripheral surface for supporting and transporting the developer. A toner excess supplying member supplies excess toner to the developer supported on the developer transport member. An excess toner separator separates toner having a small adhesion force to the carrier from the developer to which excessive toner is applied.

摘要翻译： 显影装置使用包含磁性载体的双组分显影剂和电吸引到磁性载体上的调色剂，用于选择性地将调色剂转印到形成在图像载体上的静电潜像，以使潜像可视化。 显影装置包括面向图像载体的显影剂传送构件，并具有用于支撑和运送显影剂的外围表面。 调色剂过量供给部件向支撑在显影剂传送部件上的显影剂供给多余的调色剂。 多余的调色剂分离器将具有小粘附力的调色剂从施加过量调色剂的显影剂中分离到载体上。

公开(公告)号：US5406313A

公开(公告)日：1995-04-11

申请号：US80059

申请日：1993-06-23

申请人： Tsuneo Noami ,  Kazuo Maruyama ,  Takeshi Sumikawa ,  Nobumasa Furuya

发明人： Tsuneo Noami ,  Kazuo Maruyama ,  Takeshi Sumikawa ,  Nobumasa Furuya

IPC分类号： G03G15/01 ,  G03G13/01 ,  G03G15/00 ,  G03G15/08 ,  G03G21/00

CPC分类号： G03G13/01 ,  G03G15/0152 ,  G03G15/0163

摘要： A first negative or positive latent electrostatic image is formed on a latent image bearing body with a first writing device, and developed with a monochromatic toner. A second latent image of the type different than the first latent image is formed by a second writing device after setting the background voltage of the second image to have an absolute value larger than the first image, and then developed with one or two color toners selected from three color toners of respective multi-color developing units. A plurality of multi-color toner images may be formed in respective rotation cycles of the latent image bearing body. A monochromatic toner image may be formed in the same rotation cycle as one of the multi-color toner images. Finally, a plurality of toner images thus produced are transferred onto a recording sheet at once after polarities of the plurality of toner images have been arranged into the same polarity.

摘要翻译： 在第一书写装置的潜像承载体上形成第一负极或正静电潜像，并用单色调色剂显影。 在将第二图像的背景电压设置为大于第一图像的绝对值之后，通过第二写入装置形成与第一潜像不同的类型的第二潜像，然后用选择的一个或两个彩色调色剂显影 来自相应的多色显影单元的三色调色剂。 可以在潜像承载体的各旋转周期中形成多个多色调色剂图像。 可以以与多色调色剂图像中的一种相同的旋转周期形成单色调色剂图像。 最后，将多个调色剂图像的极性排列成相同的极性之后，将这样产生的多个调色剂图像一次转印到记录片材上。

公开(公告)号：US4833505A

公开(公告)日：1989-05-23

申请号：US147352

申请日：1988-01-22

申请人： Nobumasa Furuya ,  Kazuo Maruyama ,  Tsuneo Noami ,  Takeshi Sumikawa ,  Toshirou Yamamoto ,  Kouji Adachi ,  Kiyoshi Horie

发明人： Nobumasa Furuya ,  Kazuo Maruyama ,  Tsuneo Noami ,  Takeshi Sumikawa ,  Toshirou Yamamoto ,  Kouji Adachi ,  Kiyoshi Horie

IPC分类号： G03G9/107 ,  G03G13/01 ,  G03G13/09

CPC分类号： G03G13/09 ,  G03G13/013 ,  G03G9/107

摘要： A latent color image developing system for copying a document having a first color images and second color images develops the first color images with a first color developer and the second color images with a second color developer. The second color developer includes a toner and a magnetic carrier having a density of less than 4.0 g/cm.sup.3 and a particle size in the range of 30-50 microns. A developer roll is used having a main developing pole with a flux density of more than 500 gauss in a nip region proximate a photosensitive member having latent electrostatic images to be developed.

摘要翻译： 用于复印具有第一彩色图像和第二彩色图像的文档的潜像彩色图像显影系统利用第一彩色显影剂和第二彩色图像与第二彩色显影剂显影第一彩色图像。 第二种颜色显影剂包括调色剂和密度小于4.0g / cm 3且粒度在30-50微米范围内的磁性载体。 使用显影辊，其具有在具有要显影的静电潜像的感光构件附近的压区中具有大于500高斯的磁通密度的主显影极。

公开(公告)号：US5418097A

公开(公告)日：1995-05-23

申请号：US43764

申请日：1993-04-06

申请人： Nobumasa Furuya ,  Tsuneo Noami ,  Takeshi Sumikawa

发明人： Nobumasa Furuya ,  Tsuneo Noami ,  Takeshi Sumikawa

IPC分类号： G03G15/01 ,  G03G15/06 ,  G03G15/09 ,  G03G13/01

CPC分类号： G03G15/0121

摘要： A color image recording apparatus according to the present invention comprises a light-sensitive drum, a first developing device for developing a first electrostatic latent image on the drum surface as a first toner image, a second developing device for developing a second electrostatic latent image as a second toner image on the drum surface along with the first toner image, and a developing bias voltage source for applying a developing bias voltage to the second developer device comprising a DC component and an AC component of a predetermined period, wherein the AC component has a waveform such that the time for the voltage to change from a value such that an electric field making toner move toward the electrostatic latent image is maximum to a value such that the electric field becomes minimum is set to be at least 1/2 of the predetermined period of the AC component. According to a method of the present invention a first toner is electrostatically attracted to an electrostatic latent image on the surface of a light-sensitive drum, and then a second toner is electrostatically attracted to the electrostatic latent image on the drum surface by applying a periodic AC electric field in which the time during which the electric field develops the electrostatic latent image with the second toner exceeds the time during which the electric field does not develop the electrostatic latent image with the second toner. The developed first and second toner images are then simultaneously transfered to a copy sheet.

摘要翻译： 根据本发明的彩色图像记录装置包括感光鼓，用于将作为第一调色剂图像的鼓表面上的第一静电潜像显影的第一显影装置，用于显影第二静电潜像的第二显影装置， 与第一调色剂图像一起在鼓表面上的第二调色剂图像和用于将显影偏压施加到包括预定周期的DC分量和AC分量的第二显影剂装置的显影偏压源，其中AC分量具有 使得电压从使得调色剂的电场向静电潜像移动的值变化的电压的时间最大化为使得电场变得最小的值被设定为至少为 AC组件的预定周期。 根据本发明的方法，将第一调色剂静电吸引到感光鼓的表面上的静电潜像上，然后通过施加周期性的方式将第二调色剂静电吸引到鼓表面上的静电潜像 其中电场用第二调色剂显影静电潜像的时间的交流电场超过电场不会与第二调色剂显影静电潜像的时间。 然后将显影的第一和第二调色剂图像同时转印到复印纸上。

公开(公告)号：US5126795A

公开(公告)日：1992-06-30

申请号：US510463

申请日：1990-04-17

申请人： Kazuo Maruyama ,  Kiyoshi Horie ,  Tsuneo Noami ,  Toshiro Yamamoto ,  Koji Adachi ,  Toru Okamoto ,  Takeshi Sumikawa ,  Nobumasa Furuya

发明人： Kazuo Maruyama ,  Kiyoshi Horie ,  Tsuneo Noami ,  Toshiro Yamamoto ,  Koji Adachi ,  Toru Okamoto ,  Takeshi Sumikawa ,  Nobumasa Furuya

IPC分类号： G03G9/107 ,  G03G13/01 ,  G03G13/09 ,  G03G13/22

CPC分类号： G03G13/22 ,  G03G13/013 ,  G03G13/09 ,  G03G9/107

摘要： An image forming method of the present invention comprises: a first toner image formation process for forming a first toner image by forming, on a latent image carrier, a first latent image which corresponds to a first image and developing the first latent image by a first toner charged to one polarity through a development process selected from normal and reverse development process selected from normal and reverse development processes so as to correspond to the polarity of the first toner; a second toner image formation process for forming a second toner image by forming, on the latent image carrier, a second latent image which correspond to a second image and developing the second latent image by a second toner charged to the other polarity by the other development process while applying a developing bias; and a transfer treatment process for simultaneously transferring said first and second toner images to a transfer medium; wherein said developing bias VB2 satisfies the following equations:.vertline.VT1-VB2.vertline.>.vertline.VH2-VB2.vertline. (1).vertline.VT1-VB2.vertline.>.vertline.VT1-VH2.vertline. (2)where a surface potential of said first toner image is VT1, a background potential in said second toner image forming process is VH2, and the developing bias in said second toner image forming process is VB2.

公开(公告)号：US5212525A

公开(公告)日：1993-05-18

申请号：US773849

申请日：1991-10-11

申请人： Tsuneo Noami ,  Takeshi Sumikawa ,  Nobumasa Furuya

发明人： Tsuneo Noami ,  Takeshi Sumikawa ,  Nobumasa Furuya

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/09

摘要： There is disclosed a dual component developing device for developing an electrostatic latent image formed on a latent image carrier. The system comprises a rotatable nonmagnetic sleeve, a magnetic roll mounted inside the sleeve, and a developer-limiting member made from a nonmagnetic material. The magnetic roll has neighboring magnetic poles which have the same polarity and repel each other. The limiting member is disposed opposite to the repelling magnetic poles and between the position at which the magnetic force produced by the repelling pole located on the upstream side as viewed in the direction of movement of developer is maximal and the position at which the magnetic forces produced between the repelling poles is minimal. Thus, the developing device is capable of forming a thin film of the developer without aging. The amount of the transferred developer depends to a lesser extent on the spacing between the sleeve and the limiting member.

摘要翻译： 公开了一种用于显影形成在潜像载体上的静电潜像的双组分显影装置。 该系统包括可旋转的非磁性套筒，安装在套筒内的磁性辊以及由非磁性材料制成的显影剂限制部件。 磁辊具有相同极性的相邻磁极并且彼此排斥。 限位构件设置成与排斥磁极相对，并且在由显影剂运动方向观察的位于上游侧的排斥极产生的磁力最大的位置和产生磁力的位置之间 排斥极之间极少。 因此，显影装置能够形成显影剂的薄膜而不老化。 转移的显影剂的量在较小程度上取决于套筒和限制构件之间的间隔。

公开(公告)号：US5181072A

公开(公告)日：1993-01-19

申请号：US733619

申请日：1991-07-22

申请人： Nobumasa Furuya ,  Tsuneo Noami ,  Takeshi Sumikawa

发明人： Nobumasa Furuya ,  Tsuneo Noami ,  Takeshi Sumikawa

IPC分类号： G03G15/02 ,  G03G15/01

CPC分类号： G03G15/0105

摘要： In a color recording apparatus, charges are applied to a latent electrostatic image carrier by a scorotron having a grid after development of a first latent electrostatic image on the carrier with a first color toner. Thereafter, a second electrostatic latent image is formed and developed with a second color toner. If the charges given by the scorotron have the same polarity as a charging polarity of the first color toner, a potential of the grid is set to be equal to a non-image portion potential of the first latent electrostatic image, or set to have a polarity opposite to that of an image portion potential of the first latent electrostatic image assuming that the non-image portion potential is regarded as 0 V as a reference potential. If the charges given by the scorotron have a polarity opposite to the charging polarity of the first color toner, a potential of the grid is set to have a polarity opposite to that of the non-image portion potential image assuming that the image portion potential is regarded as 0 V as a reference potential.

摘要翻译： 在彩色记录装置中，通过第一彩色调色剂在载体上显影第一静电潜像之后，通过具有栅格的栅栏将电荷施加到静电潜像载体上。 此后，用第二彩色调色剂形成并显影第二静电潜像。 如果由刮刀给出的电荷具有与第一彩色调色剂的充电极性相同的极性，则将电网的电位设定为等于第一静电潜像的非图像部分电位，或者将其设置为具有 假设非图像部分电位被认为是0V作为参考电位，则与第一静电潜像的图像部分电位的极性相反。 如果由刮刀给出的电荷具有与第一彩色调色剂的充电极性相反的极性，则假定图像部分电位为非图像部分电势图像，将栅极的电位设置为与非图像部分电势图像的极性相反的极性 视为0V作为参考电位。

公开(公告)号：US5532804A

公开(公告)日：1996-07-02

申请号：US275440

申请日：1994-07-15

申请人： Kei Hirata ,  Tomoyoshi Chihara ,  Nobumasa Furuya ,  Takeshi Sumikawa

发明人： Kei Hirata ,  Tomoyoshi Chihara ,  Nobumasa Furuya ,  Takeshi Sumikawa

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0921

摘要： A developing device, which has a developer carrying member forming a magnetic brush of a two-component developer and is capable of carrying out a development while it is not in contact with an electrostatic latent image retaining member, is improved so as to reproduce an image at a sufficient image density.

摘要翻译： 具有形成双组分显影剂的磁刷并且能够在不与静电潜像保持构件接触的同时进行显影的显影剂承载构件的显影装置被改进，以便再现图像 在足够的图像密度。