公开(公告)号：US20050093907A1

公开(公告)日：2005-05-05

申请号：US10698667

申请日：2003-10-31

申请人： Carl Staelin ,  Ruth Bergman ,  Mani Fischer ,  Darryl Greig ,  Marie Vans ,  Gregory Braverman ,  Shlomo Harush ,  Eyol Shalef

发明人： Carl Staelin ,  Ruth Bergman ,  Mani Fischer ,  Darryl Greig ,  Marie Vans ,  Gregory Braverman ,  Shlomo Harush ,  Eyol Shalef

IPC分类号： G03G15/06 ,  H04N1/40 ,  H04N1/60 ,  B41J2/205

CPC分类号： H04N1/40006 ,  G03G15/065

摘要： A method for a digital printing press includes estimating a developer voltage by applying a developer voltage estimation model to measurements of state parameters of the digital printing press.

摘要翻译： 数字印刷机的方法包括通过将显影剂电压估计模型应用于数字印刷机的状态参数的测量来估计显影剂电压。

公开(公告)号：US20050063721A1

公开(公告)日：2005-03-24

申请号：US10916618

申请日：2004-08-12

申请人： Masayoshi Nakayama ,  Teruaki Mitsuya ,  Hisao Okada ,  Keisuke Kubota ,  Takashi Rokutanda

发明人： Masayoshi Nakayama ,  Teruaki Mitsuya ,  Hisao Okada ,  Keisuke Kubota ,  Takashi Rokutanda

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G15/06 ,  G03G21/00 ,  G03G15/02 ,  G03G15/043

CPC分类号： G03G15/0121 ,  G03G15/065 ,  G03G2215/0634

摘要： A color image forming apparatus includes a developing unit to which a developing bias with an AC component superposed is applied, wherein the DC voltage of the developing bias is adjusted to set the detected density of a solid image at a specified value, the light amount of radiation for exposing an image area having a width of a few dots adjacent to the white paper is adjusted to set the detected density of an image developed under a peripheral electric field at a specified value, and the gradation density curve is regulated by alternately adjusting the DC voltage, the light amount of radiation for exposing the image area having a width of a few dots adjacent to the white paper, and the amplitude of the AC component until the detected density of a mesh point image having an area ratio from 60 to 80% falls within a specified range.

摘要翻译： 彩色图像形成装置包括：显影单元，施加具有叠加的交流分量的显影偏压，其中调整显影偏压的直流电压，以将检测到的实心图像的浓度设定在规定值，光量 调整用于曝光具有与白纸相邻的几个点的宽度的图像区域的辐射，以将在周围电场下显影的图像的检测浓度设定为规定值，并且通过交替调整色调浓度曲线来调节灰度浓度曲线 DC电压，用于曝光具有与白纸相邻的几个点的宽度的图像区域的辐射的光量以及AC分量的振幅直到具有60至80的面积比的网格图像的检测密度 ％落在指定范围内。

公开(公告)号：US20050053391A1

公开(公告)日：2005-03-10

申请号：US10671778

申请日：2003-09-29

申请人： Byeong-hwa Ahn ,  Young-min Yoon ,  Seung-yoon Lee ,  Se-hyun Lyu

发明人： Byeong-hwa Ahn ,  Young-min Yoon ,  Seung-yoon Lee ,  Se-hyun Lyu

IPC分类号： G03G21/00 ,  G03G15/01 ,  G03G15/06 ,  G03G15/08 ,  H01H9/54 ,  H01H50/04 ,  H01H50/14 ,  H01H50/26 ,  H01H50/56 ,  H01H50/64 ,  G03G15/00

CPC分类号： G03G15/065 ,  G03G2215/0634

摘要： A voltage supply device for developing devices of a color image forming apparatus has a printed circuit board (PCB) connected with a high voltage supply source, a plurality of fixed contact point terminals provided at one end of the respective color developing devices, and a plurality of voltage changeover units for selectively connecting the PCB and the fixed contact point terminals to selectively supply the voltage from the high voltage supply source to the respective color developing devices. With the voltage supply device, contact point changeover is enabled without having to move the developing device, by using a relay part of a relatively simple structure during the change of developing device. Accordingly, deterioration of printing quality due to shock from the contact with the developing device is avoided, and the reliability of high voltage contact point changeover is improved. Further, the number of high voltage wiring harness, which is required for supplying voltage from the high voltage supply source to the developing devices, can be reduced.

摘要翻译： 用于彩色图像形成装置的显影装置的电压供应装置具有与高压电源连接的印刷电路板（PCB），设置在各个彩色显影装置一端的多个固定触点端子，以及多个 的电压切换单元，用于选择性地连接PCB和固定触点端子，以选择性地将来自高压电源的电压提供给各个彩色显影装置。 利用电压供给装置，在显影装置的更换期间，通过使用相对简单的结构的继电器部件，不需要移动显影装置就能够进行接点切换。 因此，避免了由于与显影装置的接触引起的冲击导致的打印质量的劣化，从而提高了高压触点切换的可靠性。 此外，可以减少从高压电源向显影装置供给电压所需的高压线束的数量。

公开(公告)号：US06865359B2

公开(公告)日：2005-03-08

申请号：US10812166

申请日：2004-03-30

申请人： Tsutomu Sasaki ,  Mie Yoshino ,  Yusuke Takeda ,  Tsuneo Kurotori ,  Tohru Nakano ,  Noriyasu Takeuchi

发明人： Tsutomu Sasaki ,  Mie Yoshino ,  Yusuke Takeda ,  Tsuneo Kurotori ,  Tohru Nakano ,  Noriyasu Takeuchi

IPC分类号： G03G15/06 ,  G03G15/10 ,  G03G15/11

CPC分类号： G03G15/065 ,  G03G15/101 ,  G03G15/11

摘要： An image forming apparatus using a highly viscous, dense developing liquid consisting of a carrier liquid and toner. A developing unit including a developer carrier and a coating member for coating the developing liquid on the developer carrier. The developer carrier conveys the liquid to a developing zone to develop a latent image formed on the image carrier with the liquid. In the developing zone, the toner in the liquid is moved toward the image by electrophoresis to form a toner layer in which the toner is present in the earner liquid and a carrier layer in which the toner is absent in the same. When the developer carrier and image carrier are moved away from the developing zone, the toner is moved toward the image over a degree at which the developing liquid can separate at the boundary between the toner layer and the carrier layer.

摘要翻译： 使用由载体液体和调色剂组成的高粘度，致密显影液的成像装​​置。 一种显影单元，包括显影剂载体和用于将显影液涂覆在显影剂载体上的涂层构件。 显影剂载体将液体输送到显影区域，以形成与液体形成在图像载体上的潜像。 在显影区中，通过电泳将液体中的调色剂向图像移动，形成调色剂存在于载体液体中的调色剂层和不存在调色剂的载体层。 当显影剂载体和图像载体从显影区域移开时，调色剂在显影液体可以在调色剂层和载体层之间的边界处分离的程度上移向图像。

公开(公告)号：US20050019047A1

公开(公告)日：2005-01-27

申请号：US10925972

申请日：2004-08-26

申请人： Tetsuo Katoh

发明人： Tetsuo Katoh

IPC分类号： G03G15/06 ,  G03G15/08

CPC分类号： G03G15/065 ,  G03G2215/0607

摘要： In an image forming apparatus employing a two-component developing system, there are provided printed-sheet number counting means; developing-device drive time integrating means for integrating time during which a developing device drives; and a toner replenishing motor drive time integrating means for integrating time during which a toner replenishing motor drives. Integrated drive time of the developing device and integrated drive time of the toner replenishing motor every fixed printed-sheet number, and the toner consuming quantity per drive time of the developing device is calculated from the extracted data. The toner charge quantity in a developer is predicted on the basis of the calculated data, and a developing bias voltage applied to the developing device is changed to thereby revise an image density.

公开(公告)号：US06829447B2

公开(公告)日：2004-12-07

申请号：US10006680

申请日：2001-12-10

申请人： Keiji Okano

发明人： Keiji Okano

IPC分类号： G03G1506

CPC分类号： G03G15/065

摘要： A developing apparatus includes developer carrying member for carrying a developer; wherein the developer carrying member is supplied with a developing voltage comprising a superimposed DC voltage component and AC voltage component to develop an electrostatic latent image formed on an image bearing member; switching means for switching an image density of a developed image on the image bearing member; wherein when the image density of the developed image is made higher than a predetermined image density in accordance with an output of the switching means, the frequency of the AC voltage component is made higher than a predetermined frequency.

摘要翻译： 显影装置包括用于承载显影剂的显影剂承载构件; 其中向显影剂承载构件提供包括叠加的直流电压分量和交流电压分量的显影电压，以形成形成在图像承载部件上的静电潜像; 切换装置，用于切换图像承载部件上显影图像的图像浓度; 其中当根据开关装置的输出使显影图像的图像浓度高于预定图像浓度时，使AC电压分量的频率高于预定频率。

公开(公告)号：US20040156647A1

公开(公告)日：2004-08-12

申请号：US10700630

申请日：2003-11-05

申请人： BROTHER KOGYO KABUSHIKI KAISHA

发明人： Satoru Ishikawa ,  Fumio Morita ,  Fumikazu Sato ,  Hideaki Deguchi

IPC分类号： G03G015/00 ,  G03G015/02 ,  G03G015/06 ,  G03G015/16

CPC分类号： G03G15/065 ,  G03G15/0266 ,  G03G15/0291

摘要： During printing on a thick paper, a Scorotron charger disposed upstream of a developing roller in a drum rotational direction charges a photosensitive drum to about 1000 V. Then a transfer roller disposed downstream of the developing roller lowers the potential to about 80 V. The transfer bias is turned off at the end of printing at T1 and does not lower the surface potential after this. When the surface of the drum opposite the transfer roller reaches a position opposite the Scorotron charger at T2, a DC motor and a charging bias are turned off. The surface potential of the drum that passes opposite the developing roller remains at about 400 V and is higher than developing roller potential until the photosensitive drum comes to a complete stop after idling at T3. This prevents the developing agent from adhering to the photosensitive drum.

摘要翻译： 在厚纸上打印时，设置在鼓旋转方向上的显影辊上游的Scorotron充电器将感光鼓充电至约1000V。然后，设置在显影辊下游的转印辊将电位降至约80V。转印 偏压在T1的打印结束时关闭，此后不会降低表面电位。 当与转印辊相对的滚筒表面在T2时达到与Scorotron充电器相对的位置时，直流电机和充电偏压被关闭。 与显影辊相对的鼓的表面电位保持在约400V，并高于显影辊电位，直到感光鼓在T3空转之后完全停止。 这防止显影剂粘附到感光鼓上。