公开(公告)号：US06330408B1

公开(公告)日：2001-12-11

申请号：US09428334

申请日：1999-10-27

申请人： Shirou Wakahara ,  Tomohiro Oikawa ,  Yukikazu Kamei ,  Hideki Ohnishi ,  Hiroshi Doshoda

发明人： Shirou Wakahara ,  Tomohiro Oikawa ,  Yukikazu Kamei ,  Hideki Ohnishi ,  Hiroshi Doshoda

IPC分类号： G03G1516

CPC分类号： G03G15/1675 ,  G03G2215/1614

摘要： A transfer apparatus having a photoconductor drum for holding thereon an image formed by toner charged with a negative polarity and a transfer roller disposed opposite the photoconductor drum, in which paper is fed to an area where the photoconductor drum and the transfer roller face each other and the toner image on the photoconductor drum is transferred to the paper by using a unidirectional transfer electric field formed by the transfer roller. The transfer roller also serves as charge supply control device for supplying a charge to the toner held on the photoconductor drum to thereby substantially neutralize the charge of the toner while retaining the negative polarity of the toner.

摘要翻译： 一种转印装置，具有用于保持由负极性的调色剂形成的图像的感光鼓和与感光鼓相对设置的转印辊，其中纸张被供给到感光鼓和转印辊彼此面对的区域， 通过使用由转印辊形成的单向转印电场将感光鼓上的调色剂图像转印到纸上。 转印辊还用作向保持在感光鼓上的调色剂供应电荷的电荷供给控制装置，从而基本上中和调色剂的电荷，同时保持调色剂的负极性。

公开(公告)号：US6097923A

公开(公告)日：2000-08-01

申请号：US42021

申请日：1998-03-13

申请人： Yoshie Iwakura ,  Seiichi Yoshida ,  Hideki Ohnishi ,  Fumio Shimazu

发明人： Yoshie Iwakura ,  Seiichi Yoshida ,  Hideki Ohnishi ,  Fumio Shimazu

IPC分类号： G03G15/01 ,  G03G15/16

CPC分类号： G03G15/1685 ,  G03G15/167

摘要： When a grounded conductive roller touches a transfer drum through a transfer material while a voltage is applied to a conductor layer, charges having a polarity opposite to the polarity of the voltage applied to the conductor layer are generated over the transfer material, thereby making it possible to attract the transfer material to the dielectric layer. Since the voltage is applied to the conductor layer, the electrostatic attraction of the transfer material and the toner transfer can be carried out using a single power source. Moreover, since the attraction of the transfer material and the toner transfer are carried out by the charge injection, a lower voltage can be used. Thus, the voltage can be readily controlled while reducing the ozone emission to a relatively low level. Furthermore, since the toner transfer and electrostatic attraction of the transfer material can be carried out using a single power source, the apparatus can be downsized and less expensive. In addition, when a semiconductor layer is made of a solid elastic body, a high-quality transferred toner image can be obtained without image quality deterioration.

摘要翻译： 当接地的导电辊通过转印材料接触传送鼓，同时向导体层施加电压时，在转印材料上产生具有与施加到导体层的电压的极性相反的极性的电荷，从而使其成为可能 以将转印材料吸引到介电层。 由于向导体层施加电压，所以可以使用单个电源来进行转印材料的静电吸引和调色剂转印。 此外，由于转印材料和调色剂转印的吸引是通过电荷注入进行的，所以可以使用较低的电压。 因此，可以容易地控制电压，同时将臭氧发射降低到相对低的水平。 此外，由于可以使用单个电源来进行转印材料的调色剂转印和静电吸引，所以可以将装置小型化并且成本更低。 此外，当半导体层由固体弹性体制成时，可以获得高质量的转印调色剂图像而没有图像质量劣化。

公开(公告)号：US6002904A

公开(公告)日：1999-12-14

申请号：US976249

申请日：1997-11-21

申请人： Seiichi Yoshida ,  Fumio Shimazu ,  Hideki Ohnishi

发明人： Seiichi Yoshida ,  Fumio Shimazu ,  Hideki Ohnishi

IPC分类号： G03G21/00 ,  G03G15/01 ,  G03G15/16 ,  G03G21/08

CPC分类号： G03G15/169 ,  G03G2215/1666

摘要： An image forming apparatus is provided with a photosensitive drum on whose surface a toner image is formed, and image formation is carried out by transferring the toner image onto a transfer material such as paper or OHP sheet which is caused to electrostatically adhere to a surface of a transfer drum while being guided to the photosensitive drum. Alternatively, the toner image formed on the photosensitive drum may be once transferred onto an intermediate transfer drum, then transferred from the intermediate transfer drum onto the transfer material. In the image forming apparatus, a light projecting device for projecting light onto the photosensitive drum is provided on an upstream side to a toner image transfer position and on a downstream side to a development position on the photosensitive drum. Execution and suspension of the light projecting operation of the light projecting device is controlled depending on a toner type.

摘要翻译： 图像形成装置设置有感光鼓，其表面上形成有调色剂图像，并且通过将调色剂图像转印到诸如纸或OHP片材的转印材料上而进行图像形成，该转印材料被静电粘附到 转印鼓，同时被引导到感光鼓。 或者，形成在感光鼓上的调色剂图像可以一次转印到中间转印鼓上，然后从中间转印鼓转印到转印材料上。 在图像形成装置中，用于将光投射到感光鼓上的光投射装置设置在调色剂图像转印位置的上游侧和感光鼓上的显影位置的下游侧。 根据调色剂类型控制投光装置的投光操作的执行和暂停。

公开(公告)号：US5987292A

公开(公告)日：1999-11-16

申请号：US120144

申请日：1998-07-22

申请人： Hideki Ohnishi

发明人： Hideki Ohnishi

IPC分类号： G03G15/16

CPC分类号： G03G15/167

摘要： A transfer device which transfers a developer image formed on a surface of a photoreceptor drum to a transfer sheet is arranged so as to include a transfer drum for carrying the transfer sheet on a peripheral surface thereof, an electrode roller which can be moved to contact the transfer drum via the transfer sheet, and which can be moved apart from the transfer drum, and a control section for controlling contact start conditions between the transfer drum and the electrode roller. When the transfer sheet passes a spacing between the transfer drum and the electrode roller, the control section controls the contact start conditions in such a manner that a force is not exerted to a leading end portion of the transfer sheet from the electrode roller so as to separate the leading end portion from the transfer drum.

摘要翻译： 将形成在感光鼓表面上的显影剂图像转印到转印纸上的转印装置被布置成包括用于在其外周表面上承载转印纸的转印鼓，可以移动以接触转印纸的电极辊 通过转印纸传送滚筒，并且其可以从转印鼓移开;以及控制部分，用于控制转印鼓和电极辊之间的接触开始条件。 当转印纸通过转印鼓和电极辊之间的间隔时，控制部分以这样的方式控制接触开始条件，使得力不会从电极辊施加到转印片的前端部分，从而 将前端部分与转印鼓分开。

公开(公告)号：US5956547A

公开(公告)日：1999-09-21

申请号：US119862

申请日：1998-07-21

申请人： Yukikazu Kamei ,  Kiyoshi Toizumi ,  Hideki Ohnishi

发明人： Yukikazu Kamei ,  Kiyoshi Toizumi ,  Hideki Ohnishi

IPC分类号： G03G15/20 ,  G03G21/16

CPC分类号： G03G21/1638 ,  G03G15/2035 ,  G03G2221/1639 ,  G03G2221/1687

摘要： Enabling to perform the pressurization release and the fixture release simultaneously by one action when taking out the fixing device from the image forming device for removing the jammed paper and the like. In a fixing device comprising a pressurization roll being pressurized by the act of a pressurization lever and a spring against a heat roll, a release lever is further mounted rotatably which comprises a cam for rotating the pressurization lever against the direction of force from the spring. On the release lever is mounted a connecting pin, and the connecting pin is linked to and rotates the fixing lever which is also mounted rotatably. The fixing lever is forced toward the fixing direction by a spring, wherein a fixing piece is inserted to a fixing slit of a mounting stage formed on the image forming device body for positioning thereto. By rotating the release lever, the pressurization lever could be rotated to the direction for releasing the pressure, and simultaneously, the fixing lever is linked thereto and rotated to the direction for releasing the fixing piece from the fixing slit, thereby performing the pressurization release and fixture release by a single operation.

摘要翻译： 当从图像形成装置取出定影装置以便去除卡住的纸张等时，通过一个动作同时执行加压释放和夹具释放。 在包括通过加压杆的作用加压的加压辊和抵靠热辊的弹簧的定影装置中，释放杆还可旋转地安装，其包括用于使加压杆相对于来自弹簧的力的方向旋转的凸轮。 在释放杆上安装有连接销，并且连接销连接并旋转也可旋转地安装的固定杆。 固定杆通过弹簧被迫朝向固定方向，其中固定件被插入到形成在图像形成装置主体上用于定位的安装台的固定狭缝中。 通过旋转释放杆，加压杆可以旋转到释放压力的方向，同时，固定杆与其连接并旋转到从固定狭缝释放固定片的方向，从而执行加压释放， 固定装置通过单一操作释放。