公开(公告)号：US06438332B1

公开(公告)日：2002-08-20

申请号：US09725775

申请日：2000-11-29

申请人： Weizhong Zhao ,  Chu-heng Liu

发明人： Weizhong Zhao ,  Chu-heng Liu

IPC分类号： G03G1510

摘要： An imaging system for effecting electrostatic printing of an image, wherein the imaging system includes at least one contact electrostatic printing engine operable in a novel fashion upon a copy substrate, for imaging and development of a latent image representative of the image, and subsequent transfer of the developed image to the copy substrate. The developed image is created by separating and selectively transferring portions of a high solids content secondary toner cake layer in correspondence with the image and non-image regions of the latent image. A toner cake layer delivery apparatus draws from a supply of high solids content liquid developing material to form a primary toner cake layer on a receiving surface of a receiving member. The primary toner cake layer is subject to uniform charging to a first polarity followed by an induced charge of a second, opposing polarity to a selectable depth. The primary toner cake layer is brought into pressure contact at a process nip with an electrically-biased donor surface of movable coating member. Separation of the donor surface and the receiving surface causes the primary toner cake layer to be separated into inner and outer layers. The outer layer is transferred to the donor surface and the inner layer remains on the receiving surface. The inner layer may then be used as the secondary toner cake layer, which features a high solids content, a uniform thickness, and an accurately metered mass per unit area.

公开(公告)号：US06219501B1

公开(公告)日：2001-04-17

申请号：US09536854

申请日：2000-03-28

申请人： Weizhong Zhao ,  Chu-heng Liu

发明人： Weizhong Zhao ,  Chu-heng Liu

IPC分类号： G03G1510

CPC分类号： G03G15/101

摘要： An imaging system for effecting electrostatic printing of an image, wherein the imaging system includes at least one contact electrostatic printing engine operable in a novel fashion upon a copy substrate, for imaging and development of a latent image representative of the image, and subsequent transfer of the developed image to the copy substrate. The developed image is created by separating and selectively transferring portions of a high solids content secondary toner cake layer in correspondence with the image and non-image regions of the latent image. A toner cake layer delivery apparatus draws from a supply of high solids content liquid developing material to form a primary toner cake layer on a movable donor member. The primary toner cake layer is subject to uniform charging to a first polarity followed by an induced charge of a second, opposing polarity to a selectable depth. The primary toner cake layer is brought into pressure contact at a process nip with an electrically-biased surface of movable receiving member. Separation of the donor surface and the receiving surface causes the primary toner cake layer to be separated into inner and outer layers. The outer layer is transferred to the receiving surface and the inner layer remains on the donor surface. At least one of the inner and outer layers may then be selected as a secondary toner cake layer having a high solids content, a uniform thickness, and an accurately metered mass per unit area.

摘要翻译： 一种用于实现图像的静电印刷的成像系统，其中所述成像系统包括至少一个接触式静电印刷引擎，其以新颖的方式操作在复制基板上，用于对代表图像的潜像的成像和显影，以及随后的 显影图像到复印底物。 通过分离并选择性地转印与固体潜像的图像和非图像区域相对应的高固含量二次调色剂块层的部分来产生显影图像。 调色剂层输送装置从高固体含量液体显影材料的供应中抽出，以在可移动的供体构件上形成初级调色剂块层。 一次调色剂滤饼层经受均匀充电至第一极性，然后进行与可选择深度相反的第二极性的感应充电。 初级调色剂滤饼层在可移动接收构件的电偏置表面的加工压区处被压力接触。 供体表面和接收表面的分离使一次调色剂滤饼层分离成内层和外层。 外层转移到接收表面，内层保留在供体表面上。 然后可以选择内层和外层中的至少一层作为具有高固体含量，均匀厚度和每单位面积精确计量的质量的二次调色剂块层。

公开(公告)号：US6006061A

公开(公告)日：1999-12-21

申请号：US184674

申请日：1998-11-02

申请人： Chu-Heng Liu ,  Weizhong Zhao

发明人： Chu-Heng Liu ,  Weizhong Zhao

IPC分类号： G03G15/11 ,  G03G15/16

CPC分类号： G03G15/11

摘要： A method and apparatus for producing high quality toner images in an electrostatic printing machine. The method using the apparatus includes (a) forming an initial developed toner image on a photoreceptor using initial developed toner image forming assemblies including a first charging device for uniformly charging the photoreceptor, and a development assembly including charged toner solids having a single charge polarity; and (b) refining the initial developed toner image using reverse charge printing (RCP) assemblies including a second charging device for reversing charge polarity on unwanted toner solids in background areas of the initial developed toner image, and for removing such unwanted toner solids from such background areas, thereby producing a high quality final toner image having sharp image area edges and highly clean background areas.

摘要翻译： 一种用于在静电印刷机中制造高质量调色剂图像的方法和装置。 使用该装置的方法包括：（a）使用初始显影的调色剂图像形成组件在感光体上形成初始显影的调色剂图像，所述组合包括用于均匀地对感光体充电的第一充电装置，以及包括具有单一电荷极性的带电调色剂固体的显影组件; 和（b）使用反向电荷印刷（RCP）组件来精炼初始显影的调色剂图像，所述反相电荷印刷（RCP）组件包括用于反转初始显影的调色剂图像的背景区域中不需要的调色剂固体的电荷极性的第二充电装置，并且用于从其中除去这些不需要的调色剂固体 从而产生具有清晰图像区域边缘和高度干净的背景区域的高质量最终调色剂图像。

公开(公告)号：US5991582A

公开(公告)日：1999-11-23

申请号：US184675

申请日：1998-11-02

申请人： Chu-Heng Liu ,  Weizhong Zhao

发明人： Chu-Heng Liu ,  Weizhong Zhao

IPC分类号： G03G15/11 ,  G03G15/10 ,  G03G15/16

CPC分类号： G03G15/11

摘要： A method and apparatus for producing high quality liquid toner images in an electrostatic printing machine. The method using the apparatus includes (a) forming in a first stage, an initial developed toner image on a photoreceptor using toner image forming assemblies including a charging device; and exposure device; a development unit;; and (b) refining in a second stage, the initial developed toner image using a contact electrostatic printing (CEP) assembly including a bias source and a conductive CEP roll for biasing and applying compressive and tensile forces to the initial developed toner image to enable easy separation of image areas from background areas of the initial developed toner image, and for separating and removing unwanted toner solids from the background areas, thereby producing a high quality final toner image having sharp image area edges and highly clean background areas.

摘要翻译： 一种用于在静电印刷机中生产高质量液体调色剂图像的方法和装置。 使用该装置的方法包括（a）在第一阶段中，使用包括充电装置的调色剂图像形成组件在感光体上形成初始显影的调色剂图像; 和曝光装置; 一个发展单位 并且（b）在第二阶段中，使用包括偏压源和导电CEP辊的接触静电印刷（CEP）组件在第二阶段中精炼，以对初始显影的调色剂图像施加压缩和拉伸力，使得易于 将图像区域从初始显影的调色剂图像的背景区域分离，并且用于从背景区域分离和去除不需要的调色剂固体，从而产生具有清晰图像区域边缘和高度干净的背景区域的高质量最终调色剂图像。

公开(公告)号：US5991578A

公开(公告)日：1999-11-23

申请号：US197793

申请日：1998-11-23

申请人： Chu-Heng Liu ,  Weizhong Zhao

发明人： Chu-Heng Liu ,  Weizhong Zhao

IPC分类号： G03G13/22 ,  G03G15/02 ,  G03G15/34

CPC分类号： G03G15/34 ,  G03G13/22 ,  G03G15/0275 ,  G03G2217/0066

摘要： An efficient and high quality image forming method and apparatus wherein only selective scattered portions of an imaging surface are charged with a first charging device, and then coated with a layer of charged toner solids by a toner supply apparatus, thereby forming an "image area patch of toner"; wherein each selected scattered portion is centered relative to, and has an area slightly exceeding an area to be imaged; each such charged and coated portion is then image-wise exposed to form a first latent image; each such coated portion is subsequently recharged by a reverse charge printing (RCP) second charging device in an image-wise manner to create a secondary latent image having toner solids in image areas charged to a first polarity, and toner solids in background areas charged to a second and opposite polarity; and finally the toner solids in the image areas thereof are then transferred onto a copy substrate for fixing as an output document, thus leaving a significantly diminished quantity of non-development toner for subsequent removal from the photoreceptor.

摘要翻译： 一种高效且高质量的图像形成方法和装置，其中只有成像表面的选择性散射部分被第一充电装置充电，然后通过调色剂供应装置涂覆带电的调色剂固体层，从而形成“图像区域贴片 的墨粉“; 其中每个选择的散射部分相对于中心，并且具有稍微超过要成像的区域的面积; 然后将每个这样的带电和涂覆部分成像地暴露以形成第一潜像; 每个这样的涂覆部分随后通过反向电荷印刷（RCP）第二充电装置以成像方式再次充电，以产生在充电到第一极性的图像区域中具有调色剂固体的二次潜像，并将背景区域中的调色剂固体装入 第二个和相反的极性; 最后将其图像区域中的调色剂固体转移到用于固定的复印基板上作为输出文件，从而留下显着减少的未显影调色剂，以便随后从感光体中除去。

公开(公告)号：US5991577A

公开(公告)日：1999-11-23

申请号：US197753

申请日：1998-11-23

申请人： Chu-Heng Liu ,  Weizhong Zhao

发明人： Chu-Heng Liu ,  Weizhong Zhao

IPC分类号： G03G15/10 ,  G03G15/34 ,  G03G15/02

CPC分类号： G03G15/34 ,  G03G15/101 ,  G03G2217/0066

摘要： A method and apparatus for producing high quality liquid toner images in an electrostatic printing machine. The method using the apparatus includes selectively coat a photoreceptor only in selected image area centered portion of the photoreceptor surface thereby forming an image area centered patch of toner with developing material; image-wise exposing each such portion; patch of toner. The method using the apparatus next includes forming a final toner image from each image area centered patch of toner using an air breakdown charge development (ABCD) assembly. The ABCD assembly includes a relatively large magnitude voltage biasing source, and a nip forming roll coupled thereto and forming a toner solids recharging nip with the photoreceptor, for image-wise recharging of the single polarity toner solids coating each image area centered patch of toner, by inducing an air breakdown electrical discharge in which free mobile ions are introduced into the vicinity of each image area centered patch of toner. The latent image underlying each image area centered patch of toner cooperates with the large magnitude voltage biasing source to cause free mobile ions to flow to the toner solids of each image area centered patch of toner in an image-wise manner corresponding to the underlying latent image. This, in turn, leads to image-wise recharging of the toner solids of each image area centered patch of toner in which toner solids in image areas of each patch then have a first polarity, and toner solids in background areas thereof then have a second and relatively opposite polarity. The method of the present invention then includes separating the image area toner solids of each patch of toner from the background area toner solids thereof, thereby resulting in an efficiently produced, quality toner image with significantly reduced non-development marking material generated and requiring removal.

公开(公告)号：US5826147A

公开(公告)日：1998-10-20

申请号：US883292

申请日：1997-06-27

申请人： Chu-heng Liu ,  Weizhong Zhao

发明人： Chu-heng Liu ,  Weizhong Zhao

IPC分类号： G03G15/05 ,  G03G15/10 ,  G03G15/34 ,  G03G15/16

CPC分类号： G03G15/342 ,  G03G15/344 ,  G03G2217/0058 ,  G03G2217/0066

摘要： A novel image development method and apparatus, wherein an imaging member having an imaging surface is provided with a layer of marking material thereon, and an electrostatic latent image is created in the layer of marking material. Image-wise charging of the layer of marking material is accomplished by a wide beam ion source such that free mobile ions are introduced in the vicinity of an electrostatic latent image associated with the imaging member having the layer of marking material coated thereon. The latent image associated with the imaging member causes the free mobile ions to flow in an image-wise ion stream corresponding to the latent image, which, in turn, leads to image-wise charging of the toner layer, such that the toner layer itself becomes the latent image carrier. The latent image carrying toner layer is subsequently developed and transferred to a copy substrate to produce an output document.

摘要翻译： 一种新颖的图像显影方法和装置，其中具有成像表面的成像构件在其上设置有标记材料层，并且在标记材料层中产生静电潜像。 标记材料层的成像充电通过宽束离子源实现，使得游离的移动离子被引入到与其上涂覆有标记材料层的成像构件相关联的静电潜像附近。 与成像构件相关联的潜像使得游离的移动离子在与潜像相对应的成像方式的离子流中流动，这进而导致色调剂层的图像充电，使得调色剂层本身 成为潜像载体。 随后显影载带调色剂层的潜像，并将其转印到复印基板上以产生输出文件。

公开(公告)号：US06458500B1

公开(公告)日：2002-10-01

申请号：US09777301

申请日：2001-02-06

申请人： Weizhong Zhao ,  David H. Pan

发明人： Weizhong Zhao ,  David H. Pan

IPC分类号： G03G1500

CPC分类号： G03G9/09758 ,  G03G5/0211 ,  G03G9/08777 ,  G03G15/34 ,  G03G2217/0041 ,  G03G2217/0058

摘要： An imaging apparatus including a support member including a support surface for supporting a layer of marking material; a marking material supply apparatus for depositing marking material on the surface of the support member to form a layer of marking material thereon; a charging source for selectively delivering charge species to the layer of marking material in an imagewise manner to form an electrostatic latent image in the layer of marking material, wherein the electrostatic latent image includes image areas defined by a first charge voltage and nonimage areas defined by a second charge voltage distinguishable from the first charge voltage; and a separator member for selectively separating portions of the marking material layer in accordance with the latent image in the marking material layer to create a developed image and wherein said marking material is comprised of a liquid developer comprised of a nonpolar liquid, resin, colorant, and a charge acceptance component comprised of a cyclodextrin.

摘要翻译： 一种成像设备，包括：支撑构件，其包括用于支撑标记材料层的支撑表面;标记材料供应装置，用于在所述支撑构件的表面上沉积标记材料以在其上形成标记材料层;充电源，用于选择性地输送电荷 以标记材料层形成标记材料层，以在标记材料层中形成静电潜像，其中静电潜像包括由第一充电电压限定的图像区域和由可区分于第二充电电压的第二充电电压限定的非图像区域 第一充电电压; 以及分离器构件，用于根据所述标记材料层中的潜像选择性地分离所述标记材料层的部分以产生显影图像，并且其中所述标记材料由包含非极性液体，树脂，着色剂和 由环糊精组成的电荷接收组分。

公开(公告)号：US06440629B1

公开(公告)日：2002-08-27

申请号：US09777968

申请日：2001-02-06

申请人： Weizhong Zhao ,  David H. Pan

发明人： Weizhong Zhao ,  David H. Pan

IPC分类号： G03G1500

CPC分类号： G03G15/34 ,  G03G9/135 ,  G03G9/1355 ,  G03G2217/0058 ,  G03G2217/0066

摘要： An imaging apparatus comprising a support member including a support surface for supporting a layer of marking material; a marking material supply apparatus for depositing marking material on the surface of said support member to form a layer of marking material thereon; a charging source for selectively delivering charge species to the layer of marking material in an imagewise manner to form an electrostatic latent image in the layer of marking material, wherein the electrostatic latent image includes image areas with a first charge voltage and nonimage areas with a second charge voltage distinguishable from the: first charge voltage; and a separator member for selectively separating portions of the marking material layer in accordance with the latent image in the marking material layer to create a developed image and wherein said marking material is comprised of a liquid developer comprised of a nonpolar liquid, resin, colorant, and a charge acceptance component comprised of a aluminum complex.

摘要翻译： 一种成像装置，包括：支撑构件，其包括用于支撑标记材料层的支撑表面;标记材料供应装置，用于在所述支撑构件的表面上沉积标记材料，以在其上形成标记材料层;充电源，用于选择性地输送电荷 以标记材料层形成标记材料层，以在标记材料层中形成静电潜像，其中静电潜像包括具有第一充电电压的图像区域和具有与以下不同的第二充电电压的非图像区域：第一 充电电压; 以及分离器构件，用于根据所述标记材料层中的潜像选择性地分离所述标记材料层的部分以产生显影图像，并且其中所述标记材料由包含非极性液体，树脂，着色剂和 由铝复合物组成的电荷接受部件。

公开(公告)号：US06309786B1

公开(公告)日：2001-10-30

申请号：US09699414

申请日：2000-10-31

申请人： Weizhong Zhao ,  Chu-heng Liu

发明人： Weizhong Zhao ,  Chu-heng Liu

IPC分类号： G03G1322

CPC分类号： G03G13/16

摘要： The methods and systems for efficiently transferring images from an image bearing member include placing a release layer over the image bearing member before placing the toner layer over the release layer. The release layer reduces the adhesiveness of the toner layer to the image bearing member and, therefore, promotes efficient transfer to another substrate without applying heat. Release layer materials include, for example, a clear toner layer, a clear fluid layer and a wax layer.

摘要翻译： 用于从图像承载部件有效地传送图像的方法和系统包括在将调色剂层放置在释放层上之前将释放层放置在图像承载部件上方。 释放层降低了调色剂层与图像承载部件的粘合性，因此促进了有效地转移到另一基材而不施加热量。 脱模层材料包括例如透明调色剂层，透明流体层和蜡层。