公开(公告)号：US5887224A

公开(公告)日：1999-03-23

申请号：US862695

申请日：1997-05-23

申请人： Haruji Mizuishi ,  Masaru Tanaka ,  Shigeru Watanabe ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Yoshida

发明人： Haruji Mizuishi ,  Masaru Tanaka ,  Shigeru Watanabe ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Yoshida

IPC分类号： G03G15/08 ,  G03G21/10

CPC分类号： G03G15/0822 ,  G03G21/105 ,  G03G2215/0822

摘要： There is provided an image forming device capable of preventing smudges on the background of an image due to excess toner replenishment caused by a failure in stirring developer and toner enough to charge the toner or scattering of replenished toner without being charged. A toner conveying member for conveying replenished toner from a toner replenishing portion through a toner replenishing port to a developer stirring and conveying member is constructed by a screw member unitarily formed with the developer stirring and conveying member. The screw member has a spiral conveying fin capable of conveying the replenished toner at relatively high speed. The replenished toner is delivered to a toner replenishing portion provided in the upstream of a developer receiving portion of the screw member.

摘要翻译： 提供了一种图像形成装置，其能够防止由于搅拌显影剂的故障引起的多余的调色剂补充以及足以使调色剂充电或补充调色剂的飞散而不被充电而导致的图像背景上的污迹。 通过与显影剂搅拌和传送部件一体地形成的螺钉部件构成用于将补充调色剂从调色剂补充部分通过调色剂补充口输送到显影剂搅拌和传送部件的调色剂传送部件。 螺杆构件具有螺旋输送翅片，能够以相对高的速度输送补充的调色剂。 补充的调色剂被输送到设置在螺杆构件的显影剂接收部分的上游的调色剂补充部分。

公开(公告)号：US5915143A

公开(公告)日：1999-06-22

申请号：US885688

申请日：1997-06-30

申请人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Hiroshi Yoshinaga ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Ken Amemiya ,  Mayumi Ohori

发明人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Hiroshi Yoshinaga ,  Kenzo Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Ken Amemiya ,  Mayumi Ohori

IPC分类号： G03G15/00 ,  G03G15/08

CPC分类号： G03G15/0849 ,  G03G15/0853 ,  G03G15/0887

摘要： An image forming apparatus which is capable of adjusting toner density in response to variations of humidity. The image forming apparatus includes a toner density detector that detects the density of toner inside an image developer, a humidity detector that detects toner humidity inside the image forming apparatus, and a controller that controls a toner supplier on the basis of the toner density detected by the toner density detector and that adjusts the toner density in accordance with variations of humidity detected by the humidity detector. The humidity detector is located at a position where the humidity detector can detect humidity of air around the image developer and where the humidity detector is minimally affected by heated air.

摘要翻译： 一种能够响应于湿度变化调节调色剂浓度的图像形成装置。 图像形成装置包括：调色剂浓度检测器，其检测图像显影剂内的调色剂的浓度;检测图像形成装置内的调色剂湿度的湿度检测器;以及控制器，其基于由 调色剂浓度检测器，并且根据由湿度检测器检测到的湿度变化来调节调色剂浓度。 湿度检测器位于湿度检测器可以检测图像显影剂周围的空气湿度以及湿度检测器受加热空气影响最小的位置。

公开(公告)号：US06055388A

公开(公告)日：2000-04-25

申请号：US54510

申请日：1998-04-03

申请人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Kenzou Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Oh-Hori

发明人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Kenzou Tatsumi ,  Toshitaka Yamaguchi ,  Takeo Suda ,  Hiroshi Yoshinaga ,  Ken Amemiya ,  Mayumi Oh-Hori

IPC分类号： G03G15/08 ,  G03G15/10

CPC分类号： G03G15/0849 ,  G03G15/0853 ,  G03G15/0891

摘要： An image forming apparatus includes an image bearing member, a latent image forming device that forms a latent image on the image bearing member, a developing device that develops latent image on said image bearing member to a toner image with a two-component developer, and a toner density detecting device that detects toner density of the two-component developer in which the toner image is formed and outputted as a visible image onto a transfer member. A control device is provided for agitating the developer for a predetermined time period during an initial setting is performed for the developer, detecting a toner density of said developer after the predetermined agitation, and performing an abnormal process when a result of the detection is out of the predetermined range. A corresponding method recovers from a deterioration of an amount of charge of the toner and decreased bulk of the developer, and includes the steps of detecting a developer amount with an unused-state detection switch, detecting an output value of a toner density detecting sensor, agitating the developer, measuring an agitating time period, stopping the agitating operation indicating warning, and indicating error message.

摘要翻译： 图像形成装置包括图像承载部件，在图像承载部件上形成潜像的潜像形成装置，利用双组分显影剂将所述图像承载部件上的潜像显影成调色剂图像的显影装置，以及 调色剂浓度检测装置，其检测其中调色剂图像形成并作为可见图像输出到转印部件上的双组分显影剂的调色剂浓度。 提供了一种控制装置，用于在对显影剂进行初始设定期间的预定时间段内搅拌显影剂，在预定搅拌之后检测所述显影剂的调色剂浓度，并且当检测结果不合格时执行异常处理 预定范围。 相应的方法从调色剂的电荷量的劣化和显影剂的体积减少而恢复，并且包括以下步骤：用未使用状态的检测开关检测显影剂量，检测调色剂浓度检测传感器的输出值， 搅拌显影剂，测量搅拌时间，停止搅拌操作指示警告，并指示错误信息。

公开(公告)号：US6006050A

公开(公告)日：1999-12-21

申请号：US961515

申请日：1997-10-30

申请人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Toshitaka Yamaguchi ,  Kenzou Tatsumi ,  Hiroshi Yoshinaga ,  Takeo Suda ,  Ken Amemiya ,  Mayumi Oh-Hori

发明人： Shigeru Watanabe ,  Masaru Tanaka ,  Haruji Mizuishi ,  Toshitaka Yamaguchi ,  Kenzou Tatsumi ,  Hiroshi Yoshinaga ,  Takeo Suda ,  Ken Amemiya ,  Mayumi Oh-Hori

IPC分类号： G03G21/14 ,  G03G15/08

CPC分类号： G03G15/0822

摘要： An image forming apparatus including an image bearing member, a latent image forming device which forms a latent image on the image bearing member, a developing device which develops the latent image using a two-component developer including a toner and a carrier and a toner supplying device which supplies toner into the developing device. A developer agitating device agitates developer in the developing device and a toner-density detecting device detects a toner density of developer in the developing device. A toner-density control device controls the toner density by operating the toner supplying device on the basis of a detected result according to the toner-density detecting device. A memory device stores resultant value of the toner density detected by the toner-density detecting device during image forming operations. The toner-density detecting device detects the toner density in a warm-up operation before starting the image forming operation by the image forming apparatus. The toner-density control device changes an amount of the toner supply which is supplied by the toner supplying device after starting the image forming operation according to a result of a comparison of the detected toner density in the warm-up operation with the detected result stored in the memory device. The toner-density control device changes an amount of the toner supply which is supplied by the toner supplying device after starting the image forming operation according to the resultant value of comparison of a result of a detection.

摘要翻译： 一种图像形成装置，包括图像承载部件，在图像承载部件上形成潜像的潜像形成装置，使用包括调色剂和载体的双组分显影剂和调色剂供给来显影潜像的显影装置 将调色剂供给到显影装置中的装置。 显影剂搅拌装置搅拌显影装置中的显影剂，调色剂浓度检测装置检测显影装置中的显影剂的调色剂浓度。 调色剂浓度控制装置基于根据调色剂浓度检测装置的检测结果操作调色剂供应装置来控制调色剂浓度。 存储装置在图像形成操作期间存储由调色剂浓度检测装置检测的调色剂浓度的结果值。 调色剂浓度检测装置在图像形成装置开始图像形成操作之前检测预热操作中的调色剂浓度。 调色剂浓度控制装置根据检测到的预热操作中的调色剂浓度与检测结果的比较结果，改变在开始成像操作之后由调色剂供应装置供应的调色剂供应量 在存储设备中。 调色剂浓度控制装置根据检测结果的比较的结果值，改变在开始图像形成操作之后由调色剂供应装置供应的调色剂供应量。

公开(公告)号：US06256465B1

公开(公告)日：2001-07-03

申请号：US09420522

申请日：1999-10-18

申请人： Hiroshi Yoshinaga ,  Takeo Suda ,  Moriaki Ogawa

发明人： Hiroshi Yoshinaga ,  Takeo Suda ,  Moriaki Ogawa

IPC分类号： G03G1508

CPC分类号： G03G15/0898

摘要： An image forming apparatus capable of obviating a defective image ascribable to image transfer and an image forming unit therefor are disclosed. A nonconductive sheet member is affixed to the surface of a conductive sheet member which will face a paper or similar recording medium, and protects the paper from the influence of a bias applied to the conductive sheet member. The paper is therefore free from a charge different in polarity from a transfer bias, so that toner is prevented from scattering toward the paper.

摘要翻译： 公开了能够消除归因于图像传送的缺陷图像的图像形成装置及其图像形成单元。 不导电片构件固定在导电片构件的面向纸或类似记录介质的表面上，并保护纸免受施加到导电片构件的偏压的影响。 因此，纸张没有与转印偏压的极性不同的电荷，从而防止调色剂向纸张散射。

公开(公告)号：US06101351A

公开(公告)日：2000-08-08

申请号：US276469

申请日：1999-03-25

申请人： Takeo Suda ,  Hiroshi Yoshinaga

发明人： Takeo Suda ,  Hiroshi Yoshinaga

IPC分类号： G03G21/20 ,  G03G15/00 ,  G03G15/20 ,  G03G21/16 ,  G03G21/18

CPC分类号： G03G21/1638 ,  G03G2221/1609 ,  G03G2221/1645 ,  G03G2221/1687 ,  G03G2221/169

摘要： An image forming apparatus includes an image bearing member to form a toner image thereupon. A transfer device is positioned adjacent to the image bearing member to transfer the toner image formed on a surface of the image bearing member onto a surface of a recording medium. A cleaning device cleans the surface of the image bearing member by removing remaining toner on the surface of the image bearing member after the toner image has been transferred onto the recording medium. A fixing device is provided in an upper part of the image forming apparatus to fix the toner image transferred onto the surface of the recording medium when the recording medium passes through the fixing device. An open/close member is rotatably supported by a main body of the image forming apparatus and opens and closes a recording medium conveying path between the transfer device and the fixing device. And, a shutter is movably supported to move between a protecting position to cover a part of the surface of the image bearing member facing the outside of the image forming apparatus when the open/close member is opened and a retreating position to open the part of the surface of the image bearing member when the open/close member is closed. The retreating position of the shutter is set in a space between the image bearing member and the fixing device and the shutter is movably supported by the main body of the image forming apparatus such that the shutter moves with a first face of the shutter continuously facing the image bearing member when the shutter moves between the protecting position and the retreating position.

摘要翻译： 图像形成装置包括用于在其上形成调色剂图像的图像承载部件。 传送装置邻近图像承载部件定位，以将形成在图像承载部件的表面上的调色剂图像转印到记录介质的表面上。 清洁装置通过在调色剂图像被转印到记录介质上之后去除图像承载部件表面上剩余的调色剂来清洁图像承载部件的表面。 在记录介质通过定影装置时，在图像形成装置的上部设置有固定装置，以固定转印到记录介质的表面上的调色剂图像。 打开/关闭构件由图像形成装置的主体可旋转地支撑，并且打开和关闭转印装置和定影装置之间的记录介质输送路径。 而且，当打开/关闭构件被打开时，活门被可移动地支撑以在保护位置之间移动以覆盖图像承载构件面向图像形成装置的外部的一部分的表面，并且打开/ 当打开/关闭构件关闭时，图像承载构件的表面。 快门的撤回位置设置在图像承载部件和定影装置之间的空间中，并且快门由图像形成装置的主体可移动地支撑，使得快门随着快门的第一面连续地朝向 当快门在保护位置和退避位置之间移动时，图像承载部件。

公开(公告)号：US6055394A

公开(公告)日：2000-04-25

申请号：US277174

申请日：1999-03-26

申请人： Takeo Suda ,  Hiroshi Yoshinaga

发明人： Takeo Suda ,  Hiroshi Yoshinaga

IPC分类号： B41J29/13 ,  E05B47/00 ,  E05C17/24 ,  G03G15/00 ,  G03G21/16 ,  H01H3/16 ,  H04N1/00

CPC分类号： E05C17/24 ,  G03G21/1633 ,  E05B2047/0068 ,  G03G2221/1687 ,  G03G2221/169 ,  Y10T307/786

摘要： An image forming apparatus includes a body cover pivotally mounted on a body of the image forming apparatus and a switch mechanism for detecting an opening/closing status of the body cover. The switch mechanism includes a switch disposed in the body and a cam disposed beside the switch for activating the switch when rotated in a prescribed direction. The switch mechanism further includes a lever with one end supported by the body cover while another end contacts and rotates the cam by a prescribed constant amount of a rotational angle when the body cover is closed.

摘要翻译： 图像形成装置包括枢转地安装在图像形成装置的主体上的主体盖和用于检测主体盖的打开/关闭状态的开关机构。 开关机构包括设置在主体中的开关和设置在开关旁边的凸轮，用于当沿规定方向旋转时启动开关。 开关机构还包括杠杆，其一端由主体盖支撑，而另一端在主体盖关闭时接触并使凸轮旋转规定的恒定量的旋转角度。

公开(公告)号：US06336013B1

公开(公告)日：2002-01-01

申请号：US09546656

申请日：2000-04-10

申请人： Takeo Suda ,  Hiroshi Yoshinaga

发明人： Takeo Suda ,  Hiroshi Yoshinaga

IPC分类号： G03G1508

CPC分类号： G03G21/1832 ,  G03G15/0898 ,  G03G2221/1648 ,  G03G2221/183

摘要： An electrophotographic image forming apparatus using a magnetic toner as a developer includes an image carrier and a case housing a developing roller to develop a latent image on the image carrier with the developer. A magnet is provided to a portion of the case adjacent to a surface of the image carrier after development of the latent image and before transfer of the developed image.

摘要翻译： 使用磁性调色剂作为显影剂的电子照相图像形成装置包括图像载体和容纳显影辊的壳体，以利用显影剂在图像载体上显影潜像。 在显影潜像之后和显影图像的转印之前，将磁体设置到与图像载体的表面相邻的壳体的一部分。

公开(公告)号：US10928763B2

公开(公告)日：2021-02-23

申请号：US16845756

申请日：2020-04-10

申请人： Hiroyuki Shimada ,  Hiroshi Yoshinaga ,  Hitoshi Fujiwara

发明人： Hiroyuki Shimada ,  Hiroshi Yoshinaga ,  Hitoshi Fujiwara

IPC分类号： G03G15/20 ,  G03G21/16

摘要： A fixing device includes a rotator that rotates and a fixing device cover. The fixing device cover includes an interior face that is disposed opposite the rotator, a first aperture that is disposed opposite the rotator, and a recess that surrounds the first aperture and extends in a gravity direction. A frame is interposed between the interior face of the fixing device cover and the rotator. The frame includes a second aperture that is disposed opposite the rotator and the first aperture. A rib is mounted on the frame and extends from the second aperture toward the interior face of the fixing device cover.

公开(公告)号：US10281850B2

公开(公告)日：2019-05-07

申请号：US15980123

申请日：2018-05-15

申请人： Ryohei Matsuda ,  Ippei Fujimoto ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Takayuki Seki ,  Kazunari Sawada

发明人： Ryohei Matsuda ,  Ippei Fujimoto ,  Kenji Ishii ,  Hiroshi Yoshinaga ,  Takayuki Seki ,  Kazunari Sawada

IPC分类号： G03G15/20

摘要： A fixing device includes an endless fixing belt, a heat source, an opposed member, a nip formation pad, and a heat conductive member. The nip formation pad includes an abutment region, a first opening portion, and second opening portions. The abutment region includes a plurality of abutment surfaces abutting a first face of the heat conductive member. The first opening portion is disposed at a center of the abutment region to form a non-contact area at which the nip formation pad does not contact the heat conductive member. The abutment region includes an upstream abutment area and a downstream abutment area from the first opening portion in a direction of conveyance of a recording medium. The second opening portions divide at least one area of the upstream abutment area and the downstream abutment area into a plurality of portions in a longitudinal direction of the nip formation pad.