公开(公告)号：US4961704A

公开(公告)日：1990-10-09

申请号：US377755

申请日：1989-07-07

申请人： Shigeo Nemoto ,  Osamu Namikawa ,  Kiyomi Tsuchiya ,  Isao Nakajima ,  Yasuo Kikuchi ,  Tomio Sugaya ,  Toshitaka Ogawa ,  Sigenobu Katagiri

发明人： Shigeo Nemoto ,  Osamu Namikawa ,  Kiyomi Tsuchiya ,  Isao Nakajima ,  Yasuo Kikuchi ,  Tomio Sugaya ,  Toshitaka Ogawa ,  Sigenobu Katagiri

IPC分类号： B41J13/02 ,  B65H23/038 ,  G03G15/00 ,  G03G15/20

CPC分类号： G03G15/2064

摘要： In a printing sheet conveying device in which a sheet bearing a toner image is passed through a heating roll and a pressure roll, and which has means for changing the right and left contact pressures of these rolls to correct the meandering movement of the sheet when conveyance of the sheet is started; in which when conveyance of the sheet is started, the contact pressure of the rolls is made higher on one of the right and left sides than on the other side, and in a predetermined period of time the contact pressures on both sides are made equal to each other.

摘要翻译： 在其中带有调色剂图像的片材通过加热辊和压力辊的打印片材输送装置中，并且具有用于改变这些辊子的左右接触压力的装置，以校正输送时片材的曲折运动 的纸张开始; 其中当纸张的输送开始时，辊的接触压力在右侧和左侧之间的接触压力高于另一侧，并且在预定时间段内使两侧的接触压力等于 彼此。

公开(公告)号：US4949096A

公开(公告)日：1990-08-14

申请号：US399110

申请日：1989-08-28

申请人： Toshitaka Ogawa ,  Yasuo Kikuchi ,  Tomio Sugaya ,  Isao Nakajima ,  Takashi Suzuki ,  Shigenobu Katagiri

发明人： Toshitaka Ogawa ,  Yasuo Kikuchi ,  Tomio Sugaya ,  Isao Nakajima ,  Takashi Suzuki ,  Shigenobu Katagiri

IPC分类号： G03G15/04 ,  G03G15/20

CPC分类号： G03G15/2025

摘要： A laser printer with a thermal fixing unit comprises: a pair of heat and pressure rolls for pressing a sheet with a developed toner image therebetween to fix the toner image on the sheet; a web immersable with an oil; an oil coater for supplying the oil to the web and pressing the web against the heat roll at at least one point to make the web contact with the heat roll so that the oil is applied from the oil coater onto the surface of the heat roll through the web to thereby prevent occurrence of offset of the toner image; and at least one pressing member provided separately from the oil coater for locally urging the web against the heat roll, the pressing member being located on at least one of before and behind the oil coater.

摘要翻译： 具有热定影单元的激光打印机包括：一对加热辊和压辊，用于在其间压制具有显影的调色剂图像的片材以将调色剂图像定影在片材上; 一个浸有油的网; 用于将油提供到幅材上并在至少一个点处将纸幅压靠在热辊上的油涂布机，以使纸幅与热辊接触，使得油从涂油机施加到热辊的表面上 从而防止调色剂图像的偏移的发生; 以及至少一个与所述油涂层分离设置的按压构件，用于局部地将所述腹板压靠在所述热辊上，所述按压构件位于所述油涂布机之前和之后的至少之一。

公开(公告)号：US4910555A

公开(公告)日：1990-03-20

申请号：US267843

申请日：1988-11-07

申请人： Osamu Namikawa ,  Yasuo Kikuchi ,  Minoru Seino ,  Hiroshi Ueno ,  Koji Doi ,  Tsukasa Onose ,  Shigenobu Katagiri ,  Toshitaka Ogawa

发明人： Osamu Namikawa ,  Yasuo Kikuchi ,  Minoru Seino ,  Hiroshi Ueno ,  Koji Doi ,  Tsukasa Onose ,  Shigenobu Katagiri ,  Toshitaka Ogawa

IPC分类号： G03G15/02 ,  G03G15/00 ,  G03G15/045

CPC分类号： G03G15/045

摘要： An electrophotographic device has a photosensitive element, an electrifier that forms a uniform electrostatic potential on the photosensitive element, and a light source for irradiating the photosensitive element to obtain an electrostatic latent image that has a reduced potential. A bias potential is applied to the photosensitive element after the latent image is formed, but before it is developed, so that the reduced potential of the latent image can be maintained at a constant level. With constant potentials existing on the photosensitive element, a printed image of high quality is obtained.

摘要翻译： 电子照相装置具有感光元件，在感光元件上形成均匀的静电电位的带电器，以及用于照射感光元件以获得具有降低的电位的静电潜像的光源。 在潜像形成之后，但是在显影之前，将偏置电位施加到感光元件，使得潜像的电位降低到一定水平。 在感光元件上存在恒定电位的情况下，获得高品质的打印图像。

公开(公告)号：US5276487A

公开(公告)日：1994-01-04

申请号：US875221

申请日：1992-04-28

申请人： Katsuhiro Akinaga ,  Yasuo Kikuchi ,  Tomio Sugaya

发明人： Katsuhiro Akinaga ,  Yasuo Kikuchi ,  Tomio Sugaya

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

CPC分类号： G03G13/013

摘要： A method of preventing colors from being mixed in a two-color image forming apparatus. The surface of a photoreceptor is uniformly charged. A first latent electrostatic image formed on the photoreceptor surface is developed with a one-component developer so as to form a first toner image. A second latent electrostatic image formed on the photoreceptor surface is developed with a two-component developer so as to form a second toner image. The first and second toner images are simultaneously transferred onto a recording medium. In a preferred embodiment, the one-component developer is a magnetic toner, while the two-component developer is the combination of a nonmagnetic toner and a magnetic carrier. The magnetic toner and the magnetic carrier are preferably powder made of substantially the same materials.

摘要翻译： 防止在双色图像形成装置中混合颜色的方法。 感光体的表面均匀带电。 形成在感光体表面上的第一静电潜像用单组分显影剂显影以形成第一调色剂图像。 形成在感光体表面上的第二静电潜像用双组分显影剂显影以形成第二调色剂图像。 第一和第二调色剂图像同时转印到记录介质上。 在优选的实施方案中，单组分显影剂是磁性调色剂，而双组分显影剂是非磁性调色剂和磁性载体的组合。 磁性调色剂和磁性载体优选是由基本上相同的材料制成的粉末。

公开(公告)号：US5634183A

公开(公告)日：1997-05-27

申请号：US608154

申请日：1996-02-28

申请人： Yosuke Saito ,  Hirobumi Ouchi ,  Yasuo Kikuchi ,  Katsuhiro Akinaga ,  Tomio Sugaya

发明人： Yosuke Saito ,  Hirobumi Ouchi ,  Yasuo Kikuchi ,  Katsuhiro Akinaga ,  Tomio Sugaya

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

CPC分类号： G03G15/0126 ,  G03G15/0921

摘要： In an image printer performing multi-color printing, two magnetic poles having the same polarity are provided adjacent to each other in a position facing the printing body of the second developing agent holding body provided in the second developing unit, and development is performed under a condition satisfying the following formulas;B1.ltoreq.1100,1000.ltoreq.B2.ltoreq.1200,-300.ltoreq.B1-B2.ltoreq.0,F.apprxeq.0where B1 (gauss) is a magnetic flux density on the surface of the developing agent holding body of one magnetic pole of the magnetic poles arranged in the downstream side of the transmitting direction of the developing agent, and B2 (gauss) is a magnetic flux density on the surface of the developing agent holding body of the other magnetic pole of the magnetic poles arranged in the upstream side of the transmitting direction of the developing agent, and F (gf) is a rubbing force to the printing body of the magnetic brush in the second developing unit.

摘要翻译： 在执行多色打印的图像打印机中，具有相同极性的两个磁极彼此相邻地设置在与设置在第二显影单元中的第二显影剂保持体的印刷体相对的位置处，并且在 满足以下公式的条件：B1

公开(公告)号：US5179417A

公开(公告)日：1993-01-12

申请号：US868418

申请日：1992-04-15

申请人： Tomio Sugaya ,  Yasuyuki Tsuji ,  Yasuo Kikuchi ,  Katsuhiro Akinaga ,  Masaaki Akutsu ,  Motoji Kurobane

发明人： Tomio Sugaya ,  Yasuyuki Tsuji ,  Yasuo Kikuchi ,  Katsuhiro Akinaga ,  Masaaki Akutsu ,  Motoji Kurobane

IPC分类号： G03G15/00 ,  B41J3/60 ,  G03G15/20 ,  G03G15/23

CPC分类号： B41J3/60 ,  G03G15/234 ,  G03G15/238 ,  G03G2215/00021 ,  G03G2215/00409 ,  G03G2215/00459

摘要： An apparatus for printing on opposite surfaces of a strip of printing paper using two electrophotographic printing units wherein each printing operation is of high quality and thermal damage to the printing is minimized. The apparatus includes a first electrophotographic printing unit for printing on the front surface of the printing paper, a buffer unit for temporarily holding the printing paper discharged outside of the first electrophotographic printing unit, a turn unit for turning over the printing paper, and a second electrophotographic printing unit for printing the reverse surface of the printing paper. A toner having a low melting temperature is employed for each of the first and second electrophotographic printing units so that developing treatment is conducted only with the aid of a heat roll but without any use of a preheating plate. A back-up roll adapted to cooperate with the heat roll is coated with a tetrafluoroethylene-based synthetic resin. The second electrophotographic printing unit is provided with a paper presser for squeezing the printing paper against a photosensitive drum only within the printing width range. A retract mechanism is operatively connected to the paper presser.

摘要翻译： 使用两个电子照相印刷单元在一张打印纸的相对表面上打印的设备，其中每个打印操作具有高质量并且对打印的热损伤最小化。 该装置包括用于在打印纸的前表面上打印的第一电子照相印刷单元，用于临时保持排出第一电子照相印刷单元外部的打印纸的缓冲单元，用于翻转印刷纸的转动单元， 用于打印打印纸的背面的电子照相打印单元。 对于第一和第二电子照相印刷单元中的每一个都采用具有低熔点的调色剂，使得仅通过热辊而不使用预热板进行显影处理。 适用于与热辊配合的支撑辊涂覆有四氟乙烯基合成树脂。 第二电子照相印刷单元设置有仅在打印宽度范围内将打印纸压靠在感光鼓上的压纸器。 缩回机构可操作地连接到纸压脚。

公开(公告)号：US5574546A

公开(公告)日：1996-11-12

申请号：US504314

申请日：1995-07-20

申请人： Takao Kumasaka ,  Yasuo Takuma ,  Tatsuo Igawa ,  Tomio Sugaya ,  Yasuo Kikuchi

发明人： Takao Kumasaka ,  Yasuo Takuma ,  Tatsuo Igawa ,  Tomio Sugaya ,  Yasuo Kikuchi

IPC分类号： G03G15/01 ,  G03G15/08 ,  G03G15/09 ,  G03G15/00

CPC分类号： G03G15/0921 ,  G03G2215/017 ,  G03G2215/018 ,  G03G2215/0602 ,  G03G2215/0634

摘要： A developing apparatus in which a stationary multipole permanent magnet is placed in a sleeve and in which development is performed by bringing a developer, which contains at least carrier and toner particles and is held on the periphery of a sleeve by use of the magnetic force of the multipole permanent magnet, into contact with a photo-conductive body owing to the rotation of the sleeve. For securing image density and for preventing the deposition of carrier onto the photo-conductive body, two magnetic pieces, each of which is arranged lengthwise in the direction of the axis thereof and which have the same polarity, are placed in a region in the multipole permanent magnet which faces the photo-conductive body in such a manner as to adjoin in the circumferential direction of said permanent magnet. This results in generation of the distribution of a magnetic field which has two peaks of magnetic force. The position at which the second one of the two peaks of the magnetic force is formed, downstream in the direction of rotation of the sleeve, is set at the nearest point between the photo-conductive body and the sleeve. Thereby, even when development is performed by bringing the developer into light contact with the photo-conductive body, the image density can be secured. Further, the carrier can be prevented from depositing on the photo-conductive body.

摘要翻译： 一种显影装置，其中固定的多极永磁体被放置在套筒中，并且通过使至少包含载体和调色剂颗粒并且通过使用包含至少载体和调色剂颗粒的显影剂被保持在套筒的周边上的显影剂 多极永磁体由于套筒的旋转而与光导体接触。 为了确保图像浓度并且防止载体沉积到光导体上，将两个磁性片放置在多极中的一个区域中，每个磁性片沿其轴线方向纵向排列并且具有相同的极性 永磁体以与所述永磁体的圆周方向相邻的方式面对光导体。 这导致产生具有两个磁力峰的磁场的分布。 形成磁力的两个峰值中的第二个峰的位置在套筒的旋转方向的下游位于光导体和套筒之间的最近点处。 因此，即使通过使显影剂与光导体体接触而进行显影，也可以确保图像浓度。 此外，可以防止载体沉积在光导体上。

公开(公告)号：US5111235A

公开(公告)日：1992-05-05

申请号：US660266

申请日：1991-02-26

申请人： Hiroshi Ueno ,  Yasuo Kikuchi ,  Kunitomo Takahashi ,  Koji Doi ,  Tsukasa Onose ,  Toshitaka Ogawa

发明人： Hiroshi Ueno ,  Yasuo Kikuchi ,  Kunitomo Takahashi ,  Koji Doi ,  Tsukasa Onose ,  Toshitaka Ogawa

IPC分类号： G03G15/00 ,  G03G15/06 ,  G03G15/08

CPC分类号： G03G15/065

摘要： A method of operating an electrographic printing apparatus which employs a reversal development system with a two components developer wherein the bias voltage and the surface voltage are varied in synchronism with each other.

摘要翻译： 一种使用具有双组分显影剂的反转显影系统的电印机的方法，其中偏置电压和表面电压彼此同步地变化。

公开(公告)号：US5166736A

公开(公告)日：1992-11-24

申请号：US655714

申请日：1991-02-15

申请人： Toshitaka Ogawa ,  Yasuo Kikuchi ,  Junzi Shirakawa

发明人： Toshitaka Ogawa ,  Yasuo Kikuchi ,  Junzi Shirakawa

IPC分类号： G03G15/16 ,  B65H20/34 ,  B65H23/188 ,  B65H43/00 ,  G03G15/00 ,  G03G15/20

CPC分类号： G03G15/6526 ,  G03G15/2064 ,  G03G2215/00371 ,  G03G2215/00413 ,  G03G2215/00455 ,  G03G2215/00556

摘要： An electrophotographic printing apparatus with a pivotable paper buffer and a pivotable guide member which together, depending on their position in relation to each other, form either a loading configuration or a printing configuration. In the loading configuration, the pivoting end of the buffer is adjacent to the pivoting end of the pivotable guide member to form a horizontal path for the paper to travel between the photosensitive member and the fixing portion. In the printing configuration, the buffer pivots upward away from the guide member so that it is in a position to receive a paper sheet as it is fed by a tractor after being contacted by the photosensitive member.

摘要翻译： 具有可枢转纸张缓冲器和可枢转引导构件的电子照相打印设备，其根据它们相对于彼此的位置一起形成加载配置或打印配置。 在装载构造中，缓冲器的枢转端与可枢转引导构件的枢转端相邻，以形成纸张在感光构件和固定部分之间行进的水平路径。 在打印配置中，缓冲器向上枢转向远离引导构件，使得它在被感光构件接触之后被拖拉机馈送的位置处于接收纸张的位置。

公开(公告)号：US5008716A

公开(公告)日：1991-04-16

申请号：US417621

申请日：1989-10-05

申请人： Tsukasa Onose ,  Yasuo Kikuchi ,  Toshitaka Ogawa ,  Minoru Seino

发明人： Tsukasa Onose ,  Yasuo Kikuchi ,  Toshitaka Ogawa ,  Minoru Seino

IPC分类号： G03G15/00 ,  G03G15/20

CPC分类号： G03G15/6526 ,  G03G15/2003 ,  G03G15/6552 ,  G03G2215/00421 ,  G03G2215/00455 ,  G03G2215/00459

摘要： An electrophotographic printer in which toner is printed and fused and the paper thereafter folded and stacked. To avoid toner stick a blower blows cooling air between adjacent folded sheets. The blower may be mounted on a horizotnally slidable paper guide. The stacker table may be lowered so that the top of the stack is maintained at the same height or the blower may be moved vertically in response to the output of a sensor detecting the top of the folded stack.

摘要翻译： 一种电子照相打印机，其中调色剂被印刷和熔化，然后折叠和堆叠纸张。 为了避免调色剂粘附，吹风机在相邻的折叠片材之间吹动冷却空气。 鼓风机可以安装在水平可滑动的纸导板上。 堆叠台可以被降低，使得堆叠的顶部保持在相同的高度，或者鼓风机可以响应于检测到折叠堆叠的顶部的传感器的输出而垂直移动。