公开(公告)号：US5600405A

公开(公告)日：1997-02-04

申请号：US257296

申请日：1994-06-09

申请人： Takao Umeda ,  Katsuya Kawai ,  Yosuke Saito ,  Hiroyuki Mabuchi ,  Masayasu Anzai ,  Masato Miwa ,  Takashi Suzuki ,  Teruaki Mitsuya ,  Yasuo Takuma

发明人： Takao Umeda ,  Katsuya Kawai ,  Yosuke Saito ,  Hiroyuki Mabuchi ,  Masayasu Anzai ,  Masato Miwa ,  Takashi Suzuki ,  Teruaki Mitsuya ,  Yasuo Takuma

IPC分类号： G03G15/00 ,  G03G15/16 ,  G03G21/00 ,  G03G21/10

CPC分类号： G03G15/161 ,  G03G15/166 ,  G03G2215/1657 ,  G03G2215/1661

摘要： A bias cleaning system has an electrically conductive brush roller for collecting toner which has to adhered a transfer belt by scrubbing the toner off the transfer belt under a condition in which a direct current voltage of the opposite polarity to the charge of the toner is applied to the brush roller. A corona charger is also provided for decreasing the amount of charge on the toner on the transfer belt in a region of the belt up-stream of the electrically conductive brush roller in the moving direction of the transfer belt.

摘要翻译： 偏置清洁系统具有用于收集调色剂的导电刷辊，该调色剂必须在将与调色剂电荷相反极性的直流电压施加到其上的条件下通过将调色剂从转印带上除去而粘附转印带 刷辊。 还提供电晕充电器，用于减小导电刷辊沿转印带移动方向的带上游区域中转印带上的调色剂上的电荷量。

公开(公告)号：US5923933A

公开(公告)日：1999-07-13

申请号：US23462

申请日：1998-02-13

申请人： Masayasu Anzai ,  Tsuneaki Kawanishi ,  Yoshitaka Fujinuma ,  Hiroyoshi Matsumoto ,  Yasuo Takuma ,  Hisao Okada ,  Masayuki Ainoya ,  Takashi Suzuki ,  Yuichiro Suzuki ,  Tomonari Hokkyo ,  Koji Kato ,  Katsuya Kawai ,  Tsutomu Nakagawa

发明人： Masayasu Anzai ,  Tsuneaki Kawanishi ,  Yoshitaka Fujinuma ,  Hiroyoshi Matsumoto ,  Yasuo Takuma ,  Hisao Okada ,  Masayuki Ainoya ,  Takashi Suzuki ,  Yuichiro Suzuki ,  Tomonari Hokkyo ,  Koji Kato ,  Katsuya Kawai ,  Tsutomu Nakagawa

IPC分类号： G03G15/09

CPC分类号： G03G15/09 ,  G03G2215/0609 ,  G03G2215/0648

摘要： A uniform image is obtained by matching the sliding friction force, the moving speed and the developing agent in a developing region of two developing rollers and an electric characteristic of a photosensitive body used for image development. Two developing rollers rotating in directions opposite to each other are used, the moving direction of the first developing roller being opposite to the moving direction of the photosensitive body, and a circumferential speed ratio of a circumferential speed of the first developing roller to a circumferential speed of the photosensitive body is within a rage of 0.5 to 2.5; and the moving direction of the second developing roller is equal to the moving direction of the photosensitive body, and a circumferential speed ratio of a circumferential speed of the second developing roller to a circumferential speed of the photosensitive body is within a range of 1.5 to 3.5. A ratio of the sliding friction force between a magnetic brush for developing agent and the photosensitive body formed in the first developing roller and the sliding friction force between a magnetic brush for developing agent and the photosensitive body formed in the second developing roller is within a range of 0.9 to 2.1.

摘要翻译： 通过匹配两个显影辊的显影区域中的滑动摩擦力，移动速度和显影剂以及用于图像显影的感光体的电特性来获得均匀的图像。 使用沿彼此相反的方向旋转的两个显影辊，第一显影辊的移动方向与感光体的移动方向相反，并且第一显影辊的圆周速度与圆周速度的圆周速度比 的感光体在0.5〜2.5的范围内; 并且第二显影辊的移动方向等于感光体的移动方向，并且第二显影辊的圆周速度与感光体的圆周速度的圆周速度比在1.5至3.5的范围内 。 用于显影剂的磁刷和形成在第一显影辊中的感光体之间的滑动摩擦力与显影剂用磁刷与形成在第二显影辊中的感光体之间的滑动摩擦力之间的滑动摩擦力的比率在一定范围内 为0.9至2.1。

公开(公告)号：US06487384B2

公开(公告)日：2002-11-26

申请号：US09826943

申请日：2001-04-06

申请人： Hisao Okada ,  Hiroyuki Mabuchi ,  Teruaki Mitsuya ,  Shinya Kobayashi ,  Yasuo Takuma ,  Masayoshi Ishii ,  Hisayoshi Kato

发明人： Hisao Okada ,  Hiroyuki Mabuchi ,  Teruaki Mitsuya ,  Shinya Kobayashi ,  Yasuo Takuma ,  Masayoshi Ishii ,  Hisayoshi Kato

IPC分类号： G03G1509

CPC分类号： G03G13/013 ,  G03G2215/0174 ,  G03G2215/0495

摘要： In an image forming apparatus for charging a photosensitive body, changing the light exposure amount in at least three levels at exposure to light, thereby forming an electrostatic image made up of a high-potential part, a low-potential part, and an intermediate-potential part therebetween on the photosensitive body, and normally developing and inversely developing the electrostatic image using toners different in charge polarity for forming two types of toner images on the photosensitive body, a first developer used with a first toner image developing unit has electric resistance changed within 10% in the change range of applied voltage to the developer as the difference between a surface potential of the photosensitive body and a developing bias voltage.

摘要翻译： 在用于对感光体充电的图像形成装置中，在曝光时将曝光量改变为至少三个等级，从而形成由高电位部分，低电位部分和中间电极部分构成的静电图像， 在感光体上的潜在部分，并且使用不同于电荷极性的调色剂正常显影和反相显影静电图像，以在感光体上形成两种类型的调色剂图像，与第一调色剂图像显影单元一起使用的第一显影剂具有电阻改变 在作为感光体的表面电位与显影偏压之间的差异的显影剂的施加电压的变化范围内的10％以内。

公开(公告)号：US5459562A

公开(公告)日：1995-10-17

申请号：US249790

申请日：1994-05-26

申请人： Teruaki Mitsuya ,  Yasuyuki Tsuji ,  Yoshihiro Gunji ,  Hiroshi Hakuta ,  Yasuo Takuma

发明人： Teruaki Mitsuya ,  Yasuyuki Tsuji ,  Yoshihiro Gunji ,  Hiroshi Hakuta ,  Yasuo Takuma

IPC分类号： G03G15/20 ,  G03G15/23 ,  G03G21/00

CPC分类号： G03G15/235 ,  G03G15/2017 ,  G03G15/2021 ,  G03G15/2028 ,  G03G15/6573 ,  G03G21/206 ,  G03G2215/0059 ,  G03G2215/2083 ,  Y10S271/90

摘要： A development process and a fixing process are carried out on a front side of a recording paper. The paper recorded on the first side is transported toward a returning transportation device. The development process and the fixing process are then carried out on a back side of the paper. A nozzle for blowing out an air flow, an inverter roll for inverting the paper and the returning transportation device are arranged between the fixing station and a reversal station. The paper is deformed by the local cooling due to the air for peeling by the nozzle, the inverter roll and the returning transportation device. The portions (working regions) which receive the local cooling are arranged such that at most two of the working regions occur at any point of the recording medium paper. The inferiority of the local images in the defects in transfer and the local lowering degree in the density of the images are decreased.

摘要翻译： 在记录纸的正面进行显影处理和定影处理。 记录在第一侧的纸张朝向返回的运送装置运送。 然后在纸的背面进行显影处理和定影处理。 用于吹出空气流的喷嘴，用于翻转纸张的反转辊和返回的运送装置布置在定影台和反转台之间。 由于喷嘴，逆变器辊和返回运输装置的剥离用空气，纸被局部冷却而变形。 接收局部冷却的部分（工作区域）被布置成使得至多两个工作区域出现在记录介质纸的任何点处。 局部图像在转印缺陷中的劣势和图像密度的局部降低程度降低。

公开(公告)号：US5666598A

公开(公告)日：1997-09-09

申请号：US405891

申请日：1995-03-17

申请人： Tatsuya Sugita ,  Akira Arimoto ,  Teruaki Mitsuya ,  Nobuyoshi Hoshi ,  Mamoru Okano ,  Atsushi Onose ,  Yoshito Tsunoda ,  Shinya Kobayashi ,  Seiji Maruo ,  Yasuo Takuma

发明人： Tatsuya Sugita ,  Akira Arimoto ,  Teruaki Mitsuya ,  Nobuyoshi Hoshi ,  Mamoru Okano ,  Atsushi Onose ,  Yoshito Tsunoda ,  Shinya Kobayashi ,  Seiji Maruo ,  Yasuo Takuma

IPC分类号： G03G15/34 ,  G03G15/14

CPC分类号： G03G15/344

摘要： A high-speed image forming method and apparatus is capable of directly controlling a toner by the force of an energy beam. Selected toner particles in a mass of toner adhering to the surface of a transparent drum are irradiated with a laser beam emitted by a laser disposed within the transparent drum and controlled for scanning according to image information. The laser beam separates the selected toner particles from the transparent drum by the force it produces on the particles, and then the separated toner particles are moved to a paper sheet by the force of an electric field produced by a developing electrode. Each toner particle need only be irradiated with the light for a comparatively short period of time, so that an image can be formed at high speed.

摘要翻译： 高速图像形成方法和装置能够通过能量束的力直接控制调色剂。 使用设置在透明鼓内的激光器发射的激光束照射粘附在透明鼓表面上的调色剂块中的所选调色剂颗粒，并根据图像信息被控制用于扫描。 激光束通过其在颗粒上产生的力将选择的调色剂颗粒与透明鼓分离，然后通过由显影电极产生的电场的力将分离的调色剂颗粒移动到纸张上。 每个调色剂颗粒仅需要在相当短的时间内用光照射，使得可以高速形成图像。

公开(公告)号：US06330414B1

公开(公告)日：2001-12-11

申请号：US09409079

申请日：1999-09-30

申请人： Yasuo Takuma ,  Yoshitaka Fujinuma ,  Tomonari Hokkyou ,  Masayasu Anzai ,  Koji Kato

发明人： Yasuo Takuma ,  Yoshitaka Fujinuma ,  Tomonari Hokkyou ,  Masayasu Anzai ,  Koji Kato

IPC分类号： G03G1508

CPC分类号： G03G15/09 ,  G03G2215/0648

摘要： In a developing system containing a combination of forward-rotating and a backward-rotating developing rollers, a steady quantity of developing agent should be supplied to the developing rollers for high-quality printed images. This requirement can be satisfied by placing a doctor blade between an intersection point, where a line connecting the central axis of one of the developing rollers and its polarity reversing position meets a line connecting the central axis of the other of the developing rollers and its polarity reversing position, and the developing roller pair. Further, the doctor blade should be located on the upstream side of the developing agent flow relative to the central axes of the backward-rotating developing roller and the forward rotating developing roller with its rightmost side (upstream side) in parallel with the line connecting the central axes of the developing rollers, and the doctor gap (on the side of the developing roller to which the developing agent is supplied) should be greater than a minimum gap (doctor gap) between one end of the doctor blade and the surface of the developing roller to which the developing agent is first supplied.

摘要翻译： 在包含正向旋转和向后旋转的显影辊的组合的显影系统中，应将稳定量的显影剂供应到显影辊以获得高质量的印刷图像。 这种要求可以通过将刮刀放置在交叉点之间，其中连接显影辊中的一个的中心轴线和其极性反转位置的线与连接另一个显影辊的中心轴的线和其极性 反转位置和显影辊对。 此外，刮刀应当位于显影剂流的上游侧，相对于反转显影辊和向前旋转的显影辊的中心轴线，其最右侧（上游侧）与连接 显影辊的中心轴线和刮刀间隙（在显影剂供应的显影辊侧）应大于刮刀的一端与刮刀的表面之间的最小间隙（刮刀间隙） 首先提供显影剂的显影辊。

公开(公告)号：US5907755A

公开(公告)日：1999-05-25

申请号：US73768

申请日：1998-05-07

申请人： Yasuo Takuma ,  Yoshitaka Fujinuma ,  Masayasu Anzai ,  Hisao Okada

发明人： Yasuo Takuma ,  Yoshitaka Fujinuma ,  Masayasu Anzai ,  Hisao Okada

IPC分类号： G03G15/08 ,  G03G13/08 ,  G03G13/09

CPC分类号： G03G13/08 ,  G03G13/09 ,  G03G2215/0648

摘要： A predetermined mathematical formula, which defines an occurrence degree of an image defect where the toner layer is thinned or no toner image is formed, is set up, which is valid for a developing device including a reverse turn developer carrier and a forward turn developer carrier. A difference between the total sum A of the values by the above formula showing the occurrence degree of the image defect on the forward turn developing roller and the total sum B of the values by the above formula showing the occurrence degree on the reverse turn developing roller, i.e., (A-B), is selected within a range of -0.56 to +0.5.

摘要翻译： 确定限定了调色剂层变薄或不形成调色剂图像的图像缺陷的发生程度的预定数学公式，其对于包括反转显影剂载体和正向转动显影剂载体的显影装置是有效的 。 表示前转显影辊上的图像缺陷的发生程度的上述公式的总和A与通过上述公式的值的总和B之间的差值表示反转显影辊的发生程度 ，即（AB）在-0.56至+0.5的范围内选择。

公开(公告)号：US5373351A

公开(公告)日：1994-12-13

申请号：US917709

申请日：1992-07-16

申请人： Takao Umeda ,  Tetsuya Nagata ,  Yasuo Takuma ,  Tatsuo Igawa

发明人： Takao Umeda ,  Tetsuya Nagata ,  Yasuo Takuma ,  Tatsuo Igawa

IPC分类号： G03G15/00 ,  G03G15/08 ,  G03G15/16 ,  G03G21/00

CPC分类号： G03G15/5037 ,  G03G15/08 ,  G03G15/1655 ,  G03G15/5033

摘要： A parallel circuit of a capacitor and a varistor is connected between a ground and an aluminum cap of a photosensitive drum having a photoconductor sheet wound on a surface of an aluminum drum. The capacitor is charged by a charger. A developer roll connected to a bias voltage supply is provided with a retraction mechanism and is controlled so that the developer roll is separated from the drum mechanically upon start of operation of a recording apparatus until a potential of the cap is increased to a predetermined value and a developing agent layer does not come into contact with the cap. Alternatively to retraction of the developing roll, the developing roll may be stopped to control a height of bristle of developing agent or a bias voltage of the developer may be reversed.

摘要翻译： 电容器和变阻器的并联电路连接在具有缠绕在铝鼓的表面上的感光鼓的感光鼓的接地和铝盖之间。 电容器由充电器充电。 连接到偏置电压源的显影辊具有退回机构，并被控制，使得显影辊在记录装置的操作开始时机械地与鼓分离直到盖的电位增加到预定值，并且 显影剂层不与盖接触。 替代显影辊的缩回，可以停止显影辊以控制显影剂的刷毛的高度，或显影剂的偏压可以颠倒。

公开(公告)号：US5559578A

公开(公告)日：1996-09-24

申请号：US175867

申请日：1993-12-30

申请人： Takao Umeda ,  Toru Miyasaka ,  Osamu Namikawa ,  Isamu Komatsu ,  Tetsuya Nagata ,  Yasuo Takuma ,  Tatsuo Igawa

发明人： Takao Umeda ,  Toru Miyasaka ,  Osamu Namikawa ,  Isamu Komatsu ,  Tetsuya Nagata ,  Yasuo Takuma ,  Tatsuo Igawa

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G15/08 ,  G03G15/16 ,  G03G21/00

CPC分类号： G03G15/5037 ,  G03G15/0266 ,  G03G15/08 ,  G03G15/1655 ,  G03G15/55 ,  G03G15/553 ,  G03G15/75 ,  G03G15/752

摘要： An electrostatic recording apparatus and a management system thereof wherein the recording apparatus includes a photoconductor drum having a cap provided at an opening of the drum and a photoconductor sheet wound on a portion of the drum other than the opening, with the photoconductor drum being rotated. The cap is electrified and a capacitor is provided between the cap and a terminal and charged through the cap to maintain the cap in an electrified state. A potential of the terminal is equal to a ground potential or a potential approximating the ground potential. Further, a controller is provided for discharging the electrified electric charge of the cap in response to a discharge instruction. A managing system may be provided for judging the state of the electrostatic recording apparatus.

摘要翻译： 一种静电记录装置及其管理系统，其中记录装置包括具有设置在鼓的开口处的盖的感光鼓和缠绕在除开口之外的滚筒的一部分上的感光鼓，使感光鼓旋转。 盖子通电，并且在盖子和端子之间提供电容器并通过盖子充电以将盖子保持在带电状态。 端子的电位等于接地电位或接近地电位的电位。 此外，提供控制器，用于响应于放电指令而对盖的带电电荷进行放电。 可以提供用于判断静电记录装置的状态的管理系统。

公开(公告)号：US5499086A

公开(公告)日：1996-03-12

申请号：US091181

申请日：1993-07-13

申请人： Junichi Matsuno ,  Shigeru Obata ,  Yasuo Takuma ,  Masato Miwa ,  Kazuo Uno

发明人： Junichi Matsuno ,  Shigeru Obata ,  Yasuo Takuma ,  Masato Miwa ,  Kazuo Uno

IPC分类号： G03G15/16

CPC分类号： G03G15/1635

摘要： A belt-type transfer device which includes an endless belt rotating in contact with a photosensitive drum, with the belt being electrically charged by a corona discharger in a region of contact between the belt and the drum. A plate is provided for shielding the belt from the corona discharging in a vicinity of an outlet of the contact area to reduce electrostatic traction forces between the drum and the sheet in a vicinity of the outlet. The corona discharger may be located near an inlet of the region of contact with respect to a center thereof or a dielectric or electrically conductive film may be provided on an inner surface of the corona discharger on the contact area outlet side to increase the electrical charge of the belt at the inlet and the central portion of the region of contact. A control system detects an electric resistance value of the sheet and changes the corona discharging intensity in accordance with a detected value to stabilize an electrical charge of the belt or, a control system may be provided for slightly lowering a moving speed of the sheet as compared with a rotational speed of the drum at an outlet of the region of contact. Surface roughness of the belt is 5 .mu.m or less and the sheet delivery guides are provided having a volume resistivity of 10.sup.11 .OMEGA.cm or less, which reduces electrical charge caused on the sheet due to frictional contact.

摘要翻译： 一种带式转印装置，其包括与感光鼓接触旋转的环形带，带在带和鼓之间的接触区域中被电晕放电器带电。 提供了一个板，用于屏蔽接触区域出口附近的电晕放电带，以减少在出口附近的鼓和片材之间的静电牵引力。 电晕放电器可以相对于其中心位于接触区域的入口附近，或者电介质或导电膜可以设置在接触区域出口侧的电晕放电器的内表面上，以增加电荷 输送带和接触区域的中心部分。 控制系统检测纸张的电阻值并根据检测值改变电晕放电强度以稳定带的电荷，或者可以提供控制系统以稍微降低纸张的移动速度 其具有在接触区域的出口处的滚筒的旋转速度。 带的表面粗糙度为5μm以下，并且提供体积电阻率为1011Ω·cm以下的片材输送导向器，这减小了由于摩擦接触导致的片材上的电荷。