公开(公告)号：US5239343A

公开(公告)日：1993-08-24

申请号：US660152

申请日：1991-02-20

申请人： Yuji Sakemi ,  Hatsuo Tajima ,  Kenji Okado ,  Masahiro Inoue

发明人： Yuji Sakemi ,  Hatsuo Tajima ,  Kenji Okado ,  Masahiro Inoue

IPC分类号： G03G15/09

CPC分类号： G03G15/09 ,  G03G15/0921

摘要： A developing apparatus includes a developer layer thickness regulating zone downstream of one of magnetic poles of a stationary magnet disposed inside a developing sleeve, with respect to the rotational direction of the sleeve. In the regulating zone, there are provided a magnetic member and a non-magnetic member to regulate the layer thickness of the developer containing magnetic carrier particles and toner particles on the sleeve. The magnetic member has a width of not less than 1 mm and not more than 10 mm and a thickness of not less than 0.2 mm and not more than 3 mm.

摘要翻译： 显影装置包括相对于套筒的旋转方向设置在显影套筒内部的固定磁体的一个磁极下游的显影剂层厚度调节区域。 在调节区域中，设置有磁性构件和非磁性构件，以调节包含磁性载体颗粒的显影剂的层厚度和套筒上的调色剂颗粒。 磁性构件的宽度为1mm以上且10mm以下，厚度为0.2mm以上且3mm以下。

公开(公告)号：US4954404A

公开(公告)日：1990-09-04

申请号：US251780

申请日：1988-10-03

申请人： Masahiro Inoue ,  Hatsuo Tajima ,  Yuji Sakemi ,  Kenji Okado

发明人： Masahiro Inoue ,  Hatsuo Tajima ,  Yuji Sakemi ,  Kenji Okado

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

CPC分类号： G03G13/09 ,  G03G13/013

摘要： A method of reverse development for depositing the toner particles to the light potential area of a photosensitive member. The developer used contains magnetic carrier particles and toner particles. An alternating electric field is formed in the developing position or zone. A relative volumetric ratio Q (%) of the magnetic carrier particles in the developing position satisfies 15.0.ltoreq.Q.ltoreq.28.0. The relative volumetric ratio is defined asQ=(M/h).times.(1/.rho.).times.C.sigma./(T+C)where M (g/cm.sup.2) is an amount of applied developer on a developing sleeve surface per unit area, h (cm) is a height of space in the developing position, .rho. (g/cm.sup.3) is a true density of the magnetic carrier particles, C/(T+C) (%) is a weight ratio of the carrier particles in the developer on the surface of the sleeve, and .sigma. is a ratio of a peripheral speed of the sleeve relative to the peripheral speed of the photosensitive member.

摘要翻译： 一种用于将调色剂颗粒沉积到感光构件的光电势区域的反向显影方法。 使用的显影剂包含磁性载体颗粒和调色剂颗粒。 在显影位置或区域形成交变电场。 显影位置中的磁性载体颗粒的相对体积比Q（％）满足15.0≤Q≤28.0。 相对体积比定义为Q =（M / h）x（1 / rho）xC sigma /（T + C）其中M（g / cm2）是每单位面积在显影套筒表面上施加的显影剂的量， h（cm）是显影位置的高度，rho（g / cm3）是磁性载体颗粒的真实密度，C /（T + C）（％）是载体颗粒的重量比 显影剂在套筒的表面上，西格玛是套筒的圆周速度相对于感光构件的圆周速度的比率。

公开(公告)号：US4590140A

公开(公告)日：1986-05-20

申请号：US658779

申请日：1984-10-09

申请人： Yasuo Mitsuhashi ,  Masanori Takenouchi ,  Hatsuo Tajima ,  Masaki Uchiyama ,  Motoo Urawa ,  Kenji Okado

发明人： Yasuo Mitsuhashi ,  Masanori Takenouchi ,  Hatsuo Tajima ,  Masaki Uchiyama ,  Motoo Urawa ,  Kenji Okado

IPC分类号： G03G15/09 ,  G03G9/083 ,  G03G9/113 ,  G03G13/09 ,  G03G13/08

CPC分类号： G03G9/083 ,  Y10S222/01

摘要： A method for applying a toner comprising: forming, in a container containing a toner and magnetic particles for application of the toner, a magnetic brush of the magnetic particles; circulating the magnetic particles in the container; forming a thin layer of the toner electrically charged on the toner carrying member, wherein the magnetic particles have been treated with a substance A having a position opposite to that of the toner in the triboelectric series with the material constituting at least the surface of the toner carrying member as the standard substance and with a substance B having a position between the substance A and the toner in the triboelectric series.

摘要翻译： 一种施加调色剂的方法，包括：在容纳调色剂的容器和用于施加调色剂的磁性颗粒的容器中形成磁性颗粒的磁刷; 将磁性颗粒循环在容器中; 形成在调色剂承载构件上带电的调色剂薄层，其中已经用具有与摩擦系列中的调色剂的位置相反的位置的物质A处理磁性颗粒，其中至少构成调色剂表面的材料 携带部件作为标准物质，物质B具有物质A和摩擦系列中的调色剂之间的位置。

公开(公告)号：US5075728A

公开(公告)日：1991-12-24

申请号：US572404

申请日：1990-08-27

申请人： Yoshiaki Kobayashi ,  Hatsuo Tajima

发明人： Yoshiaki Kobayashi ,  Hatsuo Tajima

IPC分类号： G03G15/08

CPC分类号： G03G15/0896 ,  G03G15/0875 ,  G03G15/0877

摘要： A developing apparatus includes a container having a first chamber and a second chamber, the second chamber containing a developer; a rotatable developer carrying member in the first chamber to carry the developer through a developing zone where an electrostatic latent image on an image bearing member is developed; a rotatable supply member disposed in the first chamber and cooperative with the developer carrying member to form a nip therebetween to supply the developer supplied from the second chamber to the developer carrying member; and a partition wall between the first chamber and a second chamber having an opening for permitting supply of the developer from the second chamber to the supply member, wherein the opening has a length smaller than a length of the supply member.

摘要翻译： 显影装置包括具有第一室和第二室的容器，第二室包含显影剂; 第一室中的可旋转的显影剂承载构件，用于将显影剂携带在图像承载构件上的静电潜像被显影的显影区域中; 可旋转的供给构件，设置在所述第一室中并与所述显影剂承载构件协作以在其间形成辊隙，以将从所述第二室供应的显影剂供应到所述显影剂承载构件; 以及位于第一室和第二室之间的分隔壁，其具有用于允许显影剂从第二室供应到供应构件的开口，其中开口的长度小于供应构件的长度。

公开(公告)号：US4887131A

公开(公告)日：1989-12-12

申请号：US168517

申请日：1988-03-15

申请人： Masahide Kinoshita ,  Hatsuo Tajima ,  Norihisa Hoshika ,  Hiroshi Tajika ,  Atsushi Hosoi

发明人： Masahide Kinoshita ,  Hatsuo Tajima ,  Norihisa Hoshika ,  Hiroshi Tajika ,  Atsushi Hosoi

IPC分类号： G03G15/09

CPC分类号： G03G15/09

摘要： A developing apparatus for developing an electrostatic latent image on an electrostatic latent image bearing member includes a container for containing a developer which contains toner particles and magnetic particles, a developer carrying member, opposed to the electrostatic latent image bearing member, for forming a developing position for supplying the toner particles to the latent image bearing member and for carrying the developer from the container to the developing position, magnetic field generating magnet disposed across the developer carrying member from the latent image bearing member for generating a magentic field, developer regulating member for regulating the developer which contains the toner particles and carrier particles and which is carried to the developing position, wherein the magnetic field generating magnet includes one magnetic pole adjacent an upstream side of the regulating member with respect to a movement direction of the developer carrying member, and wherein a magnetic flux density downstream of the one pole less steeply decreases the increase thereof at an upstream side.

摘要翻译： 用于在静电潜像承载部件上显影静电潜像的显影装置包括容纳包含调色剂颗粒和磁性颗粒的显影剂的容器，与静电潜像承载部件相对的用于形成显影位置的显影剂承载部件 用于将调色剂颗粒供应到潜像承载构件并将显影剂从容器运送到显影位置，磁场产生磁体设置在显影剂承载构件的两侧，用于产生磁场，用于产生磁场，用于产生磁场的显影剂调节构件 调节含有调色剂颗粒和载体颗粒并且被运送到显影位置的显影剂，其中磁场产生磁体包括相对于显影剂承载构件的移动方向与调节构件的上游侧相邻的一个磁极， 并且 控制一极下游的磁通密度不太急剧地减小其在上游侧的增加。

公开(公告)号：US4873551A

公开(公告)日：1989-10-10

申请号：US168434

申请日：1988-03-15

申请人： Hatsuo Tajima ,  Atsushi Hosoi ,  Norihisa Hoshika ,  Hiroshi Tajika ,  Masahide Kinoshita

发明人： Hatsuo Tajima ,  Atsushi Hosoi ,  Norihisa Hoshika ,  Hiroshi Tajika ,  Masahide Kinoshita

IPC分类号： G03G9/107 ,  G03G13/09

CPC分类号： G03G13/09 ,  G03G9/1075

摘要： The present invention relates to a developing apparatus using magnetic carrier particles and toner particles under the influence of an alternating current. One embodiment of the present invention includes a developer which is a mixture of toner particles and resin coated magnetic particles. An alternating electric field is formed between a latent image bearing member and developer carrying member to form a toner image corresponding to an electrostatic latent image. An electric resistivity curve of the magnetic particles on a coordinate graph, where the abscissa represents an electric field E (V/cm) applied to the magnetic particles and the ordinate represents an electric resistivity R (ohm-cm) of the magnetic particles, crosses a zone defined by lines, AB, BD, DC and CA, whereA is a point with coordinates (0.2.times.10.sup.3, 10.sup.11);B is a point with coordinates (2.times.10.sup.3, 3.times.10.sup.9);C is a point with coordinates (0.2.times.103, 10.sup.8); andD is a point with coordinates (2.times.10.sup.3, 2.times.10.sup.7).The resistivity R is measured by a sandwich type cell having electrodes with a clearance of 0.4 cm and an electrode area of 4 cm.sup.2, in which 1 kg wt. is applied to one of the electrodes, and a voltage is applied across the electrodes.

摘要翻译： 本发明涉及一种在交流电影响下使用磁性载体颗粒和调色剂颗粒的显影装置。 本发明的一个实施方案包括显影剂，其是调色剂颗粒和涂覆有树脂的磁性颗粒的混合物。 在潜像承载部件和显影剂承载部件之间形成交替电场，以形成对应于静电潜像的调色剂图像。 磁性粒子在坐标图上的电阻率曲线，其中横坐标表示施加到磁性颗粒的电场E（V / cm）和纵坐标表示磁性颗粒的电阻率R（ohm-cm）， 由线AB，BD，DC和CA定义的区域，其中A是具有坐标（0.2×103,1011）的点; B是坐标（2×103,3×10 9）的点; C是坐标（0.2x103,108）的点; D是坐标（2×103,2×10 7）的点。 电阻率R通过具有间隙为0.4cm，电极面积为4cm 2的电极的夹心型电池测量，其中1kg重量。 施加到一个电极，并且在电极之间施加电压。

公开(公告)号：US4669852A

公开(公告)日：1987-06-02

申请号：US652570

申请日：1984-09-20

申请人： Hatsuo Tajima ,  Kimio Nakahata ,  Hidemi Egami ,  Fumitaka Kan ,  Atsushi Hosoi

发明人： Hatsuo Tajima ,  Kimio Nakahata ,  Hidemi Egami ,  Fumitaka Kan ,  Atsushi Hosoi

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/081 ,  G03G15/09 ,  G03G2215/0614 ,  G03G2215/0636

摘要： A developing apparatus for developing a latent image on a latent image bearing member, including a magnetic device for forming a magnetic brush of a developer mixture containing developer particles and magnetic particles; a movable developer carrying member for developing the latent image on the latent image bearing member, the developer carrying member being contactable with the magnetic brush to receive the developer mixture; a magnetic particle blocking member, disposed opposed to the developer carrying member at a position downstream of the position where the developer carrying member is contacted with the magnetic brush, for blocking the magnetic particles to form a coating of the developer particles on a surface of the developer carrying member, wherein the coating of the developer particles is conveyed by the movement of the developer carrying member to a developing station where the latent image is developed with the conveyed developer particles.

摘要翻译： 一种用于在潜像承载部件上显影潜像的显影装置，包括用于形成含有显影剂颗粒和磁性颗粒的显影剂混合物的磁刷的磁性装置; 用于使潜像承载部件上的潜像显影的可移动显影剂承载部件，显影剂承载部件可与磁刷接触以接收显影剂混合物; 磁性颗粒阻挡构件，其在显影剂承载构件与磁刷接触的位置下游的位置处与显影剂承载构件相对设置，用于阻挡磁性颗粒，以在该表面上形成显影剂颗粒的涂层 显影剂承载构件，其中通过显影剂承载构件的移动将显影剂颗粒的涂层输送到显影站，在显影站处，潜像用所输送的显影剂颗粒显影。

公开(公告)号：US4638760A

公开(公告)日：1987-01-27

申请号：US759110

申请日：1985-07-25

申请人： Shunji Nakamura ,  Fumitaka Kan ,  Hidemi Egami ,  Atsushi Hosoi ,  Hatsuo Tajima ,  Kimio Nakahata

发明人： Shunji Nakamura ,  Fumitaka Kan ,  Hidemi Egami ,  Atsushi Hosoi ,  Hatsuo Tajima ,  Kimio Nakahata

IPC分类号： G03G15/09

CPC分类号： G03G15/0921

摘要： A developing apparatus includes a container for containing a non-magnetic developer and magnetic particles, a developer carrier for carrying the non-magnetic developer toward an image bearing member, a regulating member located adjacent to the non-magnetic developer discharge opening of the container to form a gap between the surface of the carrier and the regulating member, and a magnet positioned adjacent to the carrier at the side of the carrier opposite to the regulating member and causing the magnetic particles to form a magnetic brush upstream of the regulating member adjacent to the developer discharge opening of the container with respect to the direction in which the developer carrier is moved, whereby a thin layer of the non-magnetic developer can be formed on the developer carrier.

摘要翻译： 显影装置包括用于容纳非磁性显影剂和磁性颗粒的容器，用于将非磁性显影剂载持到图像承载部件的显影剂载体，位于容器的非磁性显影剂排出口附近的限制部件， 在载体的表面和调节构件之间形成间隙，以及在载体的与调节构件相对侧的位置与载体相邻的磁体，并使磁性颗粒在与调节构件相邻的调节构件上游形成磁刷 容器的显影剂排出口相对于显影剂载体移动的方向排出，从而可以在显影剂载体上形成非磁性显影剂的薄层。

公开(公告)号：US5030996A

公开(公告)日：1991-07-09

申请号：US574893

申请日：1990-08-30

申请人： Hatsuo Tajima ,  Yoshiaki Kobayashi

发明人： Hatsuo Tajima ,  Yoshiaki Kobayashi

IPC分类号： G03G15/01 ,  G03G15/06

CPC分类号： G03G15/0121

摘要： An image forming apparatus includes an image bearing member movable through first and second developing positions in the order named and a bias voltage applying device applies a first developing bias voltage to a first developer carrying member and a second developing bias voltage to a second developer carrying member. The first bias voltage has a phase of a first electric field for applying to the toner a force from the developer carrying member to the image bearing member for a period t11 in the first developing position and a phase of a second electric field in the opposite direction to the first for a period t21 in the first developing position. The second bias voltage has a phase of a third electric field for applying to the toner a force from the developer carrying member to the image bearing member for a period t12 in the second developing position and a phase of a fourth electric field in the opposite direction to the third for a period t22 in the second developing zone. A ratio of period t22 to period t12 is larger than a ratio of period t21 to period t11. A; and peak level of the second bias voltage in period t12 is larger than a peak level of the first bias voltage in period t11 and a peak level of the second bias voltage in period t22 is smaller than a peak level of the first voltage in period t21.

公开(公告)号：US4933254A

公开(公告)日：1990-06-12

申请号：US257164

申请日：1988-10-13

申请人： Atsushi Hosoi ,  Hatsuo Tajima ,  Takashi Saito ,  Norihisa Hoshika ,  Hiroshi Tajika ,  Masaaki Yamaji

发明人： Atsushi Hosoi ,  Hatsuo Tajima ,  Takashi Saito ,  Norihisa Hoshika ,  Hiroshi Tajika ,  Masaaki Yamaji

IPC分类号： G03G13/09 ,  G03G15/09

CPC分类号： G03G13/09 ,  G03G15/09

摘要： A developing method including forming a layer of electrically charged toner particles on a surface of the developer carrying member and dispersing magnetic particles retaining on their surfaces electrically charged toner particles on the surface of the developer carrying member, carrying the particles on the developer carrying member to a developing position where a surface of an electrostatic latent image bearing member for bearing an electrostatic latent image is opposed with a clearance to the surface of the developer carrying member, applying an alternating electric field across the clearance and forming the magnetic particles into chains of the magnetic particles by magnetic field generating means disposed behind the developer carrying member, and developing the electrostatic latent image by the charged toner particles on the surface of the developer carrying member and on the surfaces of the magnetic particles.

摘要翻译： 一种显影方法，包括在显影剂承载构件的表面上形成带电荷的调色剂颗粒层，并将保持在其表面上的带电荷的调色剂颗粒的磁性颗粒分散在显影剂承载构件的表面上，将显影剂承载构件上的颗粒携带在 显影位置，其中用于承载静电潜像的静电潜像承载部件的表面与显影剂承载部件的表面间隙相对，跨越间隙施加交变电场，并将磁性颗粒形成为 通过设置在显影剂承载构件后面的磁场产生装置的磁性颗粒，并且通过在显影剂承载构件的表面和磁性颗粒的表面上的带电调色剂颗粒将静电潜像显影。