公开(公告)号：US06915088B2

公开(公告)日：2005-07-05

申请号：US10414230

申请日：2003-04-16

申请人： Ken Nakagawa ,  Koichi Otaka

发明人： Ken Nakagawa ,  Koichi Otaka

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

CPC分类号： G03G15/0216 ,  G03G15/1675 ,  G03G21/0064 ,  G03G2221/0005

摘要： An image forming apparatus including a movable image bearing member, a charging member disposed opposed to the image bearing member, a transfer member for transferring a toner image from the image bearing member onto a recording material, and potential control means far changing a potential gradient on the image bearing member at a position corresponding to an end of the recording material in a direction opposite from a charge polarity of the toner with respect to a direction opposite from a movement direction of the image bearing member.

摘要翻译： 一种图像形成装置，包括可动图像承载部件，与图像承载部件相对设置的充电部件，用于将调色剂图像从图像承载部件转印到记录材料上的转印部件，以及远离电位梯度的电位控制装置 所述图像承载部件在相对于与所述图像承载部件的移动方向相反的方向的与所述调色剂的电荷极性相反的方向上与所述记录材料的端部对应的位置处。

公开(公告)号：US06526251B1

公开(公告)日：2003-02-25

申请号：US09680975

申请日：2000-10-06

申请人： Yasumasa Otsuka ,  Koichi Otaka ,  Daizo Fukuzawa ,  Yoshiyuki Yamazaki ,  Hisashi Nakahara

发明人： Yasumasa Otsuka ,  Koichi Otaka ,  Daizo Fukuzawa ,  Yoshiyuki Yamazaki ,  Hisashi Nakahara

IPC分类号： G03G1516

CPC分类号： G03G15/167

摘要： The present invention provides an image forming apparatus, which has a roller-shaped image bearing member bearing a toner image thereon, and a transferring roller pressure-contacted with the image bearing member for transferring the toner image on the image bearing member to a transferring material, a radius of the transferring roller being 12 mm or less, wherein r/R

摘要翻译： 本发明提供了一种图像形成装置，其具有在其上承载调色剂图像的辊状图像承载部件和与图像承载部件压力接触的转印辊，用于将图像承载部件上的调色剂图像转印到转印材料 ，转印辊的半径为12mm以下，其中r / R <0.4，其中r是转印辊的半径，R是图像承载部件的半径。

公开(公告)号：US07031629B2

公开(公告)日：2006-04-18

申请号：US10413482

申请日：2003-04-15

申请人： Takeshi Kawamura ,  Koichi Otaka ,  Yasushi Shimizu ,  Yasunori Chigono ,  Ken Nakagawa ,  Hikaru Osada

发明人： Takeshi Kawamura ,  Koichi Otaka ,  Yasushi Shimizu ,  Yasunori Chigono ,  Ken Nakagawa ,  Hikaru Osada

IPC分类号： G03G15/06 ,  G03G15/30

CPC分类号： G03G15/065 ,  G03G2221/0005

摘要： An image forming apparatus includes an image bearing member; a charging member for electrically charging the image bearing member; developing means for developing with a developer an electrostatic latent image formed on the image bearing member, the developing means having a developer carrying member for carrying the developer, wherein a gap is formed between the developer carrying member and the image bearing member; bias voltage applying means for applying a bias voltage to the developer carrying member, wherein the bias applying means applies an AC bias when the electrostatic latent image is developed, wherein the developing means is capable of collecting the developer fro the image bearing member, and an amplitude of an AC bias voltage applied to the developer carrying member by the bias applying means when the the developer is collected, is larger than that when the the electrostatic latent image is developed.

摘要翻译： 图像形成装置包括：图像承载部件; 用于对图像承载部件充电的充电部件; 显影装置，用显影剂显影形成在图像承载部件上的静电潜像，显影装置具有用于承载显影剂的显影剂承载部件，其中在显影剂承载部件和图像承载部件之间形成间隙; 偏置电压施加装置，用于向显影剂承载构件施加偏置电压，其中当静电潜像显影时，偏置施加装置施加AC偏压，其中显影装置能够收集来自图像承载部件的显影剂， 当显影剂被收集时通过偏压施加装置施加到显影剂承载构件的AC偏置电压的幅度大于静电潜像显影时的偏压的幅度。

公开(公告)号：US06801729B2

公开(公告)日：2004-10-05

申请号：US10183568

申请日：2002-06-28

申请人： Atsushi Wada ,  Takashi Nakahara ,  Koichi Otaka ,  Yuichi Seki ,  Hiroshi Takazawa ,  Takashi Sekiguchi

发明人： Atsushi Wada ,  Takashi Nakahara ,  Koichi Otaka ,  Yuichi Seki ,  Hiroshi Takazawa ,  Takashi Sekiguchi

IPC分类号： G03G1500

CPC分类号： G03G15/2042 ,  G03G2215/00734 ,  G03G2215/2035

摘要： An image forming apparatus has an image forming unit and a film-heat-type fuser over which a sheet with an unfixed toner image passes and on which are positioned a first temperature-measuring device centered on the fuser so that a sheet always passes over that device and a second temperature measuring device disposed away from the center so that large sheets will pass over the second temperature measuring device and small sheets will not pass over the device when being conveyed correctly. The device also has a temperature control mechanism, a sheet size detector and throughput control, so that the throughput control changes throughput when the sheet size detector determines that a small sheet is being conveyed and the difference between the temperatures of the first and second temperature measuring devices is less than a predetermined value as the sheet passes over the fuser.

摘要翻译： 图像形成装置具有图像形成单元和膜热型定影器，通过该图像形成单元和薄膜热定影器，具有未定影调色剂图像的片材通过，并且其上定位有以定影器为中心的第一温度测量装置，使得片材总是经过 装置和远离中心设置的第二温度测量装置，使得大的片材将越过第二温度测量装置，当正确地传送小片材时，小片材不会超过装置。 该装置还具有温度控制机构，片材尺寸检测器和吞吐量控制，使得当片材尺寸检测器确定正在输送小片材时，吞吐量控制改变了生产量，并且第一和第二温度测量的温度之间的差异 当片材通过定影器时，器件小于预定值。

公开(公告)号：US5561285A

公开(公告)日：1996-10-01

申请号：US419743

申请日：1995-04-10

申请人： Shirou Sakata ,  Koichi Otaka ,  Masako Takahashi

发明人： Shirou Sakata ,  Koichi Otaka ,  Masako Takahashi

IPC分类号： G06K15/12 ,  G01J1/32

CPC分类号： G06K15/1214

摘要： A semiconductor laser is caused to emit laser light continuously on a plurality of scanning lines prior to image formation in a laser printer. An electric current to be applied is controlled so that the detected light quantity from the semiconductor laser becomes equal to the desired light quantity. The light quantity detected during pulsed emission with the applied current is used as the desired light quantity for APC which is performed at a space between sheets when a non-image area is scanned. Alternatively, laser light is emitted on a plurality of lines before the start of printing when printing of multiple pages is to be performed in a laser beam printer, to perform light quantity control. Then, laser light is emitted during scanning of a nonimage area between pages, to perform light quantity control. When light quantity control is performed between sheets, a value obtained by correcting an error between the quantities of light in both types of light quantity control is set as the desired light quantity. Alternatively, laser light is emitted continuously on a plurality of scanning lines prior to image formation to perform light quantity control. Then, laser light is emitted only when laser is scanning a non-image area to perform light quantity control, thereby setting a current volume to be applied to the semiconductor laser during image formation.

摘要翻译： 在激光打印机中形成图像之前，使半导体激光器在多条扫描线上连续地发射激光。 控制要施加的电流，使得来自半导体激光器的检测光量等于期望的光量。 在施加的电流的脉冲发射期间检测到的光量被用作在扫描非图像区域时在片材之间的空间处执行的APC的期望光量。 或者，在打印开始之前，在激光束打印机中进行多页打印时，在多行上发出激光，进行光量控制。 然后，在页之间的非图像区域的扫描期间发射激光，以进行光量控制。 当在纸张之间进行光量控制时，将通过校正两种类型的光量控制中的光量之间的误差而获得的值设定为期望的光量。 或者，在图像形成之前，激光在多条扫描线上连续发射，以进行光量控制。 然后，仅当激光扫描非图像区域才能进行光量控制时才发射激光，从而在图像形成期间设定要施加到半导体激光器的电流体积。