公开(公告)号：US06324354B1

公开(公告)日：2001-11-27

申请号：US09507880

申请日：2000-02-22

申请人： Hiroyoshi Tode ,  Masayoshi Yamada ,  Eiji Ochiai

发明人： Hiroyoshi Tode ,  Masayoshi Yamada ,  Eiji Ochiai

IPC分类号： G03G1508

CPC分类号： G03G15/0806

摘要： The present invention relates to an image forming process and an image forming apparatus, which have a refresh means which refreshes the developing sleeve by allowing the toner on the developing sleeve to jump toward the photoreceptor drum when transfer to recording medium is not done. Refresh is performed by applying an AC bias between the photoreceptor drum and the developing sleeve. The number of dots of latent image corresponding to actual image pattern is counted and the ratio of this number of dots to the number of dots corresponding to full black original image is defined as print rate, and cumulative average print rate is calculated each time when a page or a predetermined number of pages is printed. When the average print rate falls short of proper print rate, refresh is performed. It is suitable to set several proper print rate, and the duration of application of the AC bias is varied according to the average print rate. It is also effective to apply AC bias for refresh higher in effective voltage than applied for developing. It is also effective to prevent “fog” by applying transfer reverse bias to transfer part until the toner on the photoreceptor passes the transfer part and transfer positive bias after cleaning of the toner on the photoreceptor is finished. Generally, when an image forming apparatus is used for an extended period of time or when low print rate original image is copied in large quantity, deterioration such as reduction in print density and “fog” is liable to occur. According to the present invention, even if images of low print rate is copied in large quantity, deterioration does not occur.

摘要翻译： 本发明涉及一种图像形成处理和图像形成装置，其具有刷新装置，该刷新装置通过使未显影转印到记录介质上的显影套筒上的调色剂向着感光鼓跳转而刷新显影套筒。刷新是 通过在感光鼓和显影套筒之间施加AC偏压来执行。对与实际图像图案相对应的潜像的点数进行计数，并且定义该点数与对应于全黑色原始图像的点数的比率 作为打印率，并且每当打印页面或预定页数时计算累积平均打印速率。当平均打印速率低于正确的打印速率时，执行刷新。 适合设定几种正确的打印速度，AC偏置的使用持续时间根据平均打印速度而变化。在施加有效电压的AC偏压上应用交流偏压也适用于显影。它也是有效的 通过将转印反转偏压施加到转印部件直到感光体上的调色剂通过转印部分并且在清洁感光体上的调色剂之后传递正偏压才能有效地防止“雾”。通常，当图像形成装置用于 延长的时间段或者当大量拷贝低打印率的原始图像时，易于发生诸如打印浓度降低和“雾”的劣化。根据本发明，即使打印率低的图像被大量地复印 数量，不发生变质。

公开(公告)号：US5797071A

公开(公告)日：1998-08-18

申请号：US757737

申请日：1996-11-26

申请人： Yoshio Ozawa ,  Norio Tomiie ,  Hiroyoshi Tode ,  Yukio Ikeda

发明人： Yoshio Ozawa ,  Norio Tomiie ,  Hiroyoshi Tode ,  Yukio Ikeda

IPC分类号： G03G5/082 ,  G03G15/00 ,  G03G21/20

CPC分类号： G03G15/751 ,  G03G21/203 ,  G03G5/08235 ,  G03G5/08242

摘要： To form sharp image free from flow of image or fog with an electrophotographic apparatus, which uses an a-Si photo-sensitive drum charged uniformly by having resort to the discharge phenomenon, the electrophotographic apparatus comprises an electrophotographic photo-sensitive drum having a surface layer being represented by an elementary ratio composition formula ( a-Si.sub.1-x C.sub.x :H ), x being 0.95.ltoreq..times.

摘要翻译： 为了通过使用通过借助于放电现象均匀地带电的a-Si感光鼓的电子照相设备形成没有图像或雾的清晰图像，电子照相设备包括具有表面层的电子照相感光鼓 由基本比例组成式（a-Si1-xCx：H）表示，x为0.95

公开(公告)号：US5483272A

公开(公告)日：1996-01-09

申请号：US16038

申请日：1993-02-10

申请人： Hisashi Mukataka ,  Ryushi Imoo ,  Hidemasa Aiba ,  Akira Satoh ,  Masahiro Nagata ,  Hiroyoshi Tode

发明人： Hisashi Mukataka ,  Ryushi Imoo ,  Hidemasa Aiba ,  Akira Satoh ,  Masahiro Nagata ,  Hiroyoshi Tode

IPC分类号： G03G15/06 ,  G03G15/34 ,  G01D15/14

CPC分类号： G03G15/065 ,  G03G15/344 ,  G03G2215/0497 ,  G03G2217/0091

摘要： An image forming apparatus is disclosed, in which a photo-sensitive member is exposed by exposure means accommodated therein, and development is done substantially simultaneously with the exposure.Three time elements, that is, charging time constant C, i.e., time until reaching of a predetermined charging potential on of the photo-sensitive member in a brushing contact region between the photo-sensitive member and a toner holder after the start of charging, exposure time constant R, i.e., time until the charging potential is attenuated by the exposure to a latent image potential, and development time or time T, during which the photo-sensitive member passes by the brushing contact region, are appropriately determined.It is found that more satisfactory image formation is possible by setting C, R and T such as to meet relationsC+R

摘要翻译： 公开了一种图像形成装置，其中感光构件通过容纳在其中的曝光装置曝光，并且显影基本上与曝光同时进行。 三个时间要素，即充电时间常数C，即，在开始充电之后，在感光元件和调色剂保持器之间的刷涂接触区域中到达感光元件的预定充电电位之前的时间， 适当确定曝光时间常数R，即通过曝光到潜像电位使充电电位衰减的时间，以及感光元件通过刷洗接触区域的显影时间或时间T。 发现通过设定C，R和T以满足关系C + R

公开(公告)号：US06999704B2

公开(公告)日：2006-02-14

申请号：US10697558

申请日：2003-10-31

申请人： Koichi Hayashi ,  Hiroyoshi Tode ,  Yojiro Sato ,  Koujyu Yamamoto

发明人： Koichi Hayashi ,  Hiroyoshi Tode ,  Yojiro Sato ,  Koujyu Yamamoto

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G15/0886 ,  Y10S222/01

摘要： In a development apparatus of the present invention, a guide member is provided which extends through the toner receiving opening located above the agitation/transfer device to surround the pathway of the toner falling from the toner container to guide the same to the agitation/transfer device, the guide member is formed to be broaden toward the agitation/transfer device, and the bottom edge part of the guide member facing the agitation/transfer device is shaped to run along the rotational circumference of the agitation/transfer device, so that the piling up of toner between the agitation/transfer device and inner wall of the developing apparatus is prevented.

摘要翻译： 在本发明的显影装置中，设置有引导构件，其延伸穿过位于搅拌/转移装置上方的调色剂接收开口，以围绕从调色剂容器落下的调色剂的路径，以将其引导到搅拌/转移装置 引导构件形成为朝向搅拌/转移装置变宽，并且引导构件的面向搅拌/转移装置的底部边缘部分成形为沿着搅拌/输送装置的旋转周边延伸，使得打桩 防止了搅拌/转移装置与显影装置的内壁之间的调色剂。

公开(公告)号：US5824445A

公开(公告)日：1998-10-20

申请号：US855789

申请日：1997-05-12

申请人： Eiji Ochiai ,  Makoto Hamaguchi ,  Hiroyoshi Tode

发明人： Eiji Ochiai ,  Makoto Hamaguchi ,  Hiroyoshi Tode

IPC分类号： G03G9/08 ,  G03G5/08 ,  G03G5/082 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113 ,  G03G9/083

CPC分类号： G03G5/08221 ,  G03G9/107 ,  G03G9/113

摘要： A process for producing an image comprising the steps of: electrically charging a photoreceptor under dark; forming a latent image on the photoreceptor through selective imagewise exposure to light; and developing the latent image with a two-component developer comprising a carrier and a toner, the photoreceptor comprising a conductive substrate having thereon a photoconductive layer comprising amorphous silicon having a thickness of 25 .mu.m or less, the carrier is a magnetic material carrier comprising particles of a magnetic material having an average particle diameter of from 35 to 60 .mu.m, where the content of particles having a diameter of 44 .mu.m or more is 35% by weight or more. A two-component developer comprising a carrier and a toner, the carrier comprising particles of a magnetic material having an average particle diameter of from 35 to 60 .mu.m, where the content of particles having a diameter of 44 .mu.m or more is 35% by weight or more.

摘要翻译： 一种用于产生图像的方法，包括以下步骤：在黑暗下对感光体进行充电; 通过选择性地成像曝光在感光体上形成潜像; 并使用包含载体和调色剂的双组分显影剂显影潜像，所述感光体包括其上具有厚度为25μm或更小的非晶硅的光电导层的导电基底，所述载体是包含 具有平均粒径为35〜60μm的磁性材料的粒子，其中直径为44μm以上的粒子的含量为35重量％以上。 包含载体和调色剂的双组分显影剂，载体包含平均粒径为35至60μm的磁性材料颗粒，其中直径为44μm或更大的颗粒的含量为35％ 重量以上。