公开(公告)号：US5579100A

公开(公告)日：1996-11-26

申请号：US363081

申请日：1994-12-23

申请人： Zhao-Zhi Yu ,  Charles H. Tabb ,  John F. O'Brien ,  James R. Beachner ,  Mark A. Gwaltney ,  Meng H. Lean ,  Jeffrey J. Folkins

发明人： Zhao-Zhi Yu ,  Charles H. Tabb ,  John F. O'Brien ,  James R. Beachner ,  Mark A. Gwaltney ,  Meng H. Lean ,  Jeffrey J. Folkins

IPC分类号： G03G15/02 ,  G03G15/01

CPC分类号： G03G15/0157 ,  G03G15/0163 ,  G03G2215/0174

摘要： In a multi-color imaging apparatus utilizing a recharge step between two image creation steps, a corona generating device is used to recharge the developed image areas and untoned areas of a charge retentive surface to a lower electrical potential than that associated with the developed image areas before recharge, so that the residual voltage associated with the developed image is substantially reduced and a minimal level of negative charge is driven through the toner layer(s). An electrical charge associated with any previously developed images is substantially neutralized prior to development of any subsequent images thereon.

摘要翻译： 在利用两个图像创建步骤之间的再充电步骤的多色成像装置中，使用电晕发生装置将电荷保持性表面的显影图像区域和未加压区域再次充电到比显影图像区域相关联的更低的电位 在充电之前，使得与显影图像相关联的残余电压被显着地减小，并且通过调色剂层驱动最小的负电荷水平。 与任何先前显影的图像相关联的电荷在其上的任何后续图像显影之前被基本上中和。

公开(公告)号：US5539501A

公开(公告)日：1996-07-23

申请号：US504982

申请日：1995-07-20

申请人： Zhao-Zhi Yu ,  James R. Beachner

发明人： Zhao-Zhi Yu ,  James R. Beachner

IPC分类号： G03G15/02 ,  H01T19/00

CPC分类号： G03G15/0291 ,  H01T19/00

摘要： Corona generating devices, and printing machines which use such devices, which include a shell, a plurality of corona wires within the shell, and a power source which outputs first and second alternating voltages which are out-of-phase with each other. The plurality of corona wires are interconnected so as to form two groups of wires. The wires in the first group are operatively connected to the first alternating voltage and the wires in the second group are operatively connected to the second alternating voltage. The corona wires are located within the shell such that wires of the first group are adjacent wires of the second group, and such that wires of the second group are adjacent wires of the first group. The corona generating device beneficially includes a metallic screen which acts as a grid and which controls the corona flow from the corona generating device.

摘要翻译： 电晕发生装置和使用这种装置的印刷机，其包括壳体，壳体内的多个电晕丝，以及输出彼此不同相的第一和第二交变电压的电源。 多个电晕丝相互连接以形成两组电线。 第一组中的电线可操作地连接到第一交流电压，并且第二组中的电线可操作地连接到第二交流电压。 电晕线位于壳体内，使得第一组的导线是第二组的相邻导线，并且使得第二组的导线是第一组的相邻导线。 电晕发生装置有利地包括作为栅格的金属屏幕，并且控制来自电晕发生装置的电晕流。

公开(公告)号：US5991579A

公开(公告)日：1999-11-23

申请号：US197881

申请日：1998-11-23

申请人： Zhao-zhi Yu

发明人： Zhao-zhi Yu

IPC分类号： G03G15/02 ,  H01T19/00

CPC分类号： H01T19/00 ,  G03G15/0266 ,  G03G15/0291 ,  G03G2215/0174

摘要： A high slope charging device including a DC portion followed by an AC portion. The high slope device includes an insulative shell housing, an electrode and a corona wire. The electrode is coupled to direct current power source which supplies a constant potential to the electrode thereby generating a corona at the electrode. An alternating current power source supplies an alternating voltage to the corona wire. The high slope device beneficially is designed such that both the electrode and the corona wire charge a charge retentive surface to the same potential.

摘要翻译： 一种高斜率充电装置，包括DC部分和AC部分。 高斜度装置包括绝缘外壳，电极和电晕丝。 电极耦合到直流电源，其向电极提供恒定电位，从而在电极处产生电晕。 交流电源向电晕丝提供交流电压。 有利地，高斜率装置被设计成使得电极和电晕丝都将电荷保持性表面充电到相同的电位。

公开(公告)号：US5303014A

公开(公告)日：1994-04-12

申请号：US979683

申请日：1992-11-20

申请人： Zhao-Zhi Yu ,  Daniel E. Kuhman

发明人： Zhao-Zhi Yu ,  Daniel E. Kuhman

IPC分类号： G03G15/16 ,  G03G15/14

CPC分类号： G03G15/1685

摘要： A bias transfer member including a peripheral surface having low surface energy is disclosed. The low surface energy provides improved cleanability for enhancing the electrostatographic process and increasing the life of the bias transfer member. A low surface energy layer is provided by plasma fluorination to chemically modify the makeup of the surface material or by coating to form a low surface energy layer on the bias transfer member.

摘要翻译： 公开了一种包括具有低表面能的周边表面的偏置传递构件。 低表面能提供改进的可清洁性，用于增强静电放电过程并增加偏压传送部件的使用寿命。 通过等离子体氟化提供低表面能层以化学改变表面材料的组成或通过涂覆在偏压传递构件上形成低表面能层。

公开(公告)号：US6026264A

公开(公告)日：2000-02-15

申请号：US292201

申请日：1999-04-15

申请人： Lam F. Wong ,  Gerald T. Lioy ,  Samuel P. Mordenga ,  Zhao-zhi Yu

发明人： Lam F. Wong ,  Gerald T. Lioy ,  Samuel P. Mordenga ,  Zhao-zhi Yu

IPC分类号： G03G15/08

CPC分类号： G03G15/0803 ,  G03G2215/0621 ,  G03G2215/0643

摘要： An apparatus for developing a latent image recorded on an imaging surface, including a housing defining a reservoir storing a supply of developer material including toner. A mag roll loads a toner layer onto a region of said outer surface of said donor member. A donor member, spaced from the imaging surface, moves toner on an outer surface of said donor member to a development zone opposed from the imaging surface. A shield, adjacent to said donor member and said development zone, said shield being electrical biased to generate a toner cloud between said shield and said donor member which said toner cloud releases to the development zone to develop the latent image, in response to the movement of toner on the outer surface of said donor member.

摘要翻译： 一种用于显影记录在成像表面上的潜像的装置，包括限定存储包含调色剂的显影剂材料供应的储存器的壳体。 磁辊将调色剂层装载到所述供体构件的所述外表面的区域上。 与成像表面间隔开的施主构件将所述施主构件的外表面上的调色剂移动到与成像表面相对的显影区。 与所述供体构件和所述显影区相邻的屏蔽件，所述屏蔽件被电偏置以在所述屏蔽和所述供体构件之间产生调色剂云，所述调色剂云响应于所述移动而释放到显影区以显影潜像 的调色剂在所述供体构件的外表面上。

公开(公告)号：US5117244A

公开(公告)日：1992-05-26

申请号：US764299

申请日：1991-09-23

申请人： Zhao-Zhi Yu

发明人： Zhao-Zhi Yu

IPC分类号： B41J2/165

CPC分类号： B41J2/16508

摘要： A device to cap a thermal ink jet printhead, without the need of moving the printhead or the paper transport is described. The capping device has a resilient gasket which contains magnetic material and is attached to the printhead by a relatively thin flexible boot or sleeve. A steel bar is disposed in sliding contact beneath a paper transport belt. The belt is adjacently spaced parallel to the printhead. The paper transport belt is flat and smooth and has a hole-free surface. During operation of the printer, an electromagnet disposed on the printhead is energized and attracts the magnetic gasket, resulting in the attraction of the gasket above the printhead nozzles to enable printing. When the printhead is not in operation, the electromagnet is de-energized, allowing the steel bar to attract the magnetic gasket and seal the gasket to the belt, capping the printhead. The capping device eliminates the need for movement of the printhead or moving the paper transport. Also, the capping device provides capping protection in case of a power failure.

摘要翻译： 描述了不需要移动打印头或纸张传送装置来盖住热喷墨打印头的装置。 封盖装置具有弹性垫圈，其包含磁性材料，并通过相对薄的柔性靴或套筒附接到打印头。 钢条在纸张传送带下方滑动接触。 带平行于打印头相邻地间隔开。 纸张传送带平整光滑，具有无孔表面。 在打印机的操作期间，设置在打印头上的电磁体被激励并吸引磁性垫圈，导致打印头喷嘴上方的垫圈的吸引力使得能够打印。 当打印头不工作时，电磁铁被断电，允许钢筋吸引磁性垫片并将垫圈密封到皮带上，从而盖住打印头。 封盖装置不需要打印头的移动或移动纸张传送。 此外，封盖装置在断电的情况下提供封盖保护。

公开(公告)号：US5600430A

公开(公告)日：1997-02-04

申请号：US347617

申请日：1994-11-30

申请人： Jeffrey J. Folkins ,  Roger L. Bullock ,  Thomas J. Fleck ,  Kenneth W. Pietrowski ,  Charles H. Tabb ,  Zhao-Zhi Yu ,  Mark A. Gwaltney

发明人： Jeffrey J. Folkins ,  Roger L. Bullock ,  Thomas J. Fleck ,  Kenneth W. Pietrowski ,  Charles H. Tabb ,  Zhao-Zhi Yu ,  Mark A. Gwaltney

IPC分类号： G03G15/02 ,  G03G15/01

CPC分类号： G03G15/0152 ,  G03G15/0105 ,  G03G15/0157 ,  G03G15/0163 ,  G03G2215/0174

摘要： In a multi-color imaging apparatus utilizing a recharge step between two image creation steps for recharging a charge retentive surface to a predetermined potential pursuant to forming the second of the two images, a first corona generating device recharges the charge retentive surface to a higher absolute potential than a predetermined potential, and then a second corona generating device recharges the charge retentive surface to the predetermined potential. An electrical charge associated with the first image is substantially neutralized after being recharged by the first and second corona generating device.

摘要翻译： 在多色成像装置中，利用在两个图像创建步骤之间的再充电步骤，用于通过形成两个图像中的第二个将充电保持表面再次充电到预定电位，第一电晕产生装置将电荷保持表面再充电到更高的绝对值 电位超过预定电位，然后第二电晕发生装置将电荷保持表面再充电至预定电位。 与第一图像相关联的电荷在被第一和第二电晕产生装置再充电之后基本上被中和。

公开(公告)号：US06292645B1

公开(公告)日：2001-09-18

申请号：US09678204

申请日：2000-10-03

申请人： Zhao-zhi Yu

发明人： Zhao-zhi Yu

IPC分类号： G03G1508

CPC分类号： G03G15/0126 ,  G03G15/0806 ,  G03G2215/0624 ,  G03G2215/0648

摘要： A multicolor imaging apparatus utilizes a recording medium adapted to having a plurality of latent electrostatographic images defined by image charge potential areas and background charge potential areas. The recording medium moves in a process direction such that an image is recorded on the recording medium and then developed at a plurality of development stations. At least one of the development stations includes not less than two development housings, with each such housing including at least one donor roll, which is electrically biased.

摘要翻译： 多色成像装置利用适于具有由图像电荷电位区域和背景电荷电位区域限定的多个潜在静电图像的记录介质。 记录介质沿着处理方向移动，使得图像被记录在记录介质上，然后在多个显影站显影。 至少一个开发站包括不少于两个开发壳体，每个这样的壳体包括至少一个供电辊，其被电偏置。

公开(公告)号：US5581330A

公开(公告)日：1996-12-03

申请号：US347616

申请日：1994-11-30

申请人： Kenneth W. Pietrowski ,  Samuel W. Ing ,  Roger L. Bullock ,  Thomas Fleck ,  Charles H. Tabb ,  Zhao-Zhi Yu ,  Jeffrey J. Folkins ,  Daniel M. Bray ,  Cyril G. Edmunds

发明人： Kenneth W. Pietrowski ,  Samuel W. Ing ,  Roger L. Bullock ,  Thomas Fleck ,  Charles H. Tabb ,  Zhao-Zhi Yu ,  Jeffrey J. Folkins ,  Daniel M. Bray ,  Cyril G. Edmunds

IPC分类号： G03G15/02 ,  G03G15/01

CPC分类号： G03G15/0157 ,  G03G15/0163

摘要： In a multi-color imaging apparatus utilizing a recharge step between two image creation steps for conditioning a charge retentive surface pursuant to forming the second of the two images, a voltage sensitive corona generating device having a high characteristic slope described in a graph of the current delivered to a charge receiving surface (I) vs. grid minus charge receiving surface voltage (V) is used to both reduce the residual toner voltage across the previously toned image, and to charge the toned and untoned areas of the charge retentive surface to a substantially uniform level so that developability conditions for the subsequent image are improved.

摘要翻译： 在利用两个图像创建步骤之间的再充电步骤的多色成像装置中，用于根据形成两个图像中的第二个来调节电荷保持表面;电压敏感电晕产生装置，其具有当前电流图 传送到电荷接收表面（I）与电网减去电荷接收表面电压（V）的电荷被用于两者都减少先前调色的图像上的残余调色剂电压，并且将电荷保持性表面的调色区域和未调色区域充电到 基本均匀的水平，从而提高后续图像的显影性条件。

公开(公告)号：US5119116A

公开(公告)日：1992-06-02

申请号：US560845

申请日：1990-07-31

申请人： Zhao-Zhi Yu

发明人： Zhao-Zhi Yu

IPC分类号： B41J2/05 ,  B41J2/16

CPC分类号： B41J2/1623 ,  B41J2/1604 ,  B41J2/1606 ,  B41J2/1626 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1642

摘要： An ink jet printhead is disclosed which includes at least one nozzle-defining channel having non-wetting walls and a step structure therein. The step structure is arranged within the channel so that the inlet to the channel has a cross-section which is larger in area than a cross-section of the nozzle outlet. The non-wetting walls of the channel prevent ink from being driven towards the outlet nozzle by capillary action as would normally occur with wetting channel walls. By controlling a positive pressure applied to an ink supply, the meniscus of the ink within the channel can be controlled to be located adjacent the step structure of the channel and spaced away from the nozzle outlet. When an actuator, such as, for example, a resistive heating element, is actuated, a droplet of ink will be expelled from the outlet nozzle of the channel. However, since the natural location of the meniscus is spaced from the outlet nozzle, when ink surges forward to refill the channel, no additional ink will weep out of the outlet nozzle. The location of the ink meniscus spaced from the nozzle outlet also inhibits the drying of ink within the channel.

摘要翻译： 公开了一种喷墨打印头，其包括至少一个具有非润湿壁的喷嘴限定通道和其中的台阶结构。 台阶结构布置在通道内，使得通道的入口具有面积大于喷嘴出口横截面的横截面。 通道的非润湿壁防止墨水通过毛细作用被驱动朝向出口喷嘴，如通常在润湿通道壁上发生的那样。 通过控制施加到墨水供应的正压力，可以控制通道内的墨水弯月面位于邻近通道的台阶结构并与喷嘴出口间隔开。 当致动器（例如电阻加热元件）被致动时，墨滴将从通道的出口喷嘴排出。 然而，由于弯液面的自然位置与出口喷嘴间隔开，当墨水向前涌动以重新填充通道时，没有额外的墨水将从出口喷嘴中流出。 与喷嘴出口间隔开的墨水弯液面的位置也抑制了通道内油墨的干燥。