公开(公告)号：WO1992001974A1

公开(公告)日：1992-02-06

申请号：PCT/NL1990000100

申请日：1990-07-23

Applicant: SPECTRUM SCIENCES B.V. ,  LANDA, Benzion

Inventor： SPECTRUM SCIENCES B.V.

IPC: G03G15/01

CPC classification number: G03G15/104 ,  G03G15/0121

Abstract: Multi-color liquid toner electrophotographic apparatus including an image bearing surface (10) apparatus (16) for developing an image on the image bearing surface using a plurality of liquid toners of different colors and apparatus for transferring a developed image from the image bearing (10) surface to a substrate (25) wherein the apparatus for developing (16) includes a plurality of colored liquid toner reservoir volumes (40, 42, 44, 46) each for a different color, which are separated by a barrier (100) which prevents pigmented particle communication therebetween and permits communication of carrier liquid therebetween.

Abstract translation: 多色液体调色剂电子照相设备，包括用于使用多种不同颜色的液体调色剂在图像承载表面上显影图像的图像承载面（10）装置（16）和用于从图像轴承（10）传送显影图像的装置 ）表面连接到衬底（25），其中用于显影（16）的装置包括多个彩色液体调色剂储存器容积（40,42,44,46），每个颜色的液体色调剂储存器体积分别由不同的颜色分隔， 防止着色的颗粒在其间连通，并允许其间的载液的连通。

公开(公告)号：WO1991003006A1

公开(公告)日：1991-03-07

申请号：PCT/NL1990000049

申请日：1990-04-17

Applicant: SPECTRUM SCIENCES B.V.

Inventor： SPECTRUM SCIENCES B.V. ,  LANDA, Benzion ,  ASHKENAZI, Itzhak ,  VAN MIL, Jan ,  PINHAS, Hanna ,  FENSTER, Paul

IPC: G03G15/16

CPC classification number: G03G5/005 ,  G03G5/04 ,  G03G5/142 ,  G03G15/161 ,  G03G15/162 ,  G03G15/169

Abstract: An imaging system including an image bearing surface (16) and an intermediate transfer member (40) operative for transfer of liquid toner images from the image bearing surface (16) to a substrate (42) provides for first transfer engagement between the intermediate transfer member (40) and the image bearing surface (16) for transfer of an image from the image bearing surface to the intermediate transfer member (40) at a first pressure, producing deformation of the intermediate transfer member (40) to a first deformation degree. The system also provides for second transfer engagement between the intermediate transfer member (40) and the substrate (42) for transfer of the image from the intermediate transfer member to the substrate at a second pressure, producing deformation of the intermediate transfer member (40) to a second deformation degree. In one preferred embodiment the intermediate transfer member (40) includes a compressible layer having a transfer surface, a backing layer disposed away from the image bearing surface and a heating layer. The heating layer is disposed intermediate the backing layer and the transfer surface.

公开(公告)号：WO1990010990A1

公开(公告)日：1990-09-20

申请号：PCT/NL1990000024

申请日：1990-03-05

Applicant: SPECTRUM SCIENCES B.V.

Inventor： SPECTRUM SCIENCES B.V. ,  FENSTER, Paul ,  BEN-DROR, Yoav

IPC: H04N01/40

CPC classification number: H04N1/4058

Abstract: A half-tone reproduction of an object (10) on a recording medium (41) is produced using gray level values contained in the cells of an object matrix (37) representative of the object. An actuatable marking device (42) is operatively associated with and displaceable relative to the recording medium (41) for printing a dot (43A) thereon at an exposure point determined by the location of the marking device (42) at which the latter is actuated. A representation (43) of the coordinates of the marking device is obtained, and converted (44) to modular coordinates representative of the coordinates of the exposure point on a mesh of a fictitious of half-tone screen having a predetermined angular orientation relative to the print medium. A threshold screen value is computed (35) from the modular coordinates, and a gray level value is obtained from the cell of the object matrix closest to the coordinates of the exposure point. The threshold value is compared (46) to the obtained gray level value, and an actuating signal (48) is produced depending upon the results of the comparison.

公开(公告)号：WO1990010896A1

公开(公告)日：1990-09-20

申请号：PCT/NL1990000026

申请日：1990-03-05

Applicant: SPECTRUM SCIENCES B.V.

Inventor： SPECTRUM SCIENCES B.V. ,  LANDA, Benzion ,  EZUZ, Shabtai ,  KARIN, Jakob ,  FENSTER, Paul

IPC: G03G15/10

CPC classification number: B03C5/02 ,  G03G15/104 ,  G03G21/0088

Abstract: Electrostatic separator apparatus for the separation of particles from a liquid including a drum (10) having a drum surface (12), means for supplying a particle dispersion comprising particles dispersed in a liquid to the drum surface (12), electrostatic means for causing at least some of the particles to adhere to the drum surface (12) in a nonimagewise configuration, resilient blade means (22), downstream of the electrostatic means, for operative engagement with the drum surface (12) for retaining a layer (24) of particle rich material on the drum surface (12), and layer removal means (30) for layerwise removing substantially all of said layer (24) from the drum surface (12).

公开(公告)号：WO1990005589A2

公开(公告)日：1990-05-31

申请号：PCT/NL1989000086

申请日：1989-11-21

Applicant: SPECTRUM SCIENCES B.V.

Inventor： SPECTRUM SCIENCES B.V. ,  LANDA, Benzion

IPC: B03C05/02

CPC classification number: B03C5/02 ,  G03G15/104

Abstract: A filter (30) for separating a flowing fluid containing charged particles into two streams, one essentially free of particles and one laden with particles, includes a main conduit (31) having an inlet (32) at one end for receiving the flowing fluid, and having two outlets (33, 34) downstream of the one end for dividing the flow into two outlet flow paths. A pair of electrodes (33, 34) between which the fluid flows, is located in the main conduit (31) upstream of the outlets (33, 34); and each of the outlets is associated with a respective electrode (35 or 36). Voltage sources are connected to the electrodes (35, 36) such that one is more positive than the other for establishing, in the fluid flowing between the electrodes (35, 36), an electric field having a component (E) transverse to the direction of flow whereby the particles in the field are attracted toward one of the electrodes (35, 36) and travel into the outlet (33, 34) associated therewith. A dielectric coating (38) of release material in the form of a fluorosilicone polymer is applied to the surface of the one electrode (36) for inhibiting plating-out of particles thereon while fluid flows in the conduit (31).

Abstract translation: 一种用于将含有带电粒子的流动流体分离成两股流体的过滤器（30），一个基本上不含颗粒的颗粒和一个载有颗粒的流体，包括一个在一端具有用于接收流动流体的入口（32）的主管道（31） 并且在一端的下游具有两个出口（33,34），用于将流分成两个出口流动路径。 流体流动的一对电极（33,34）位于出口（33,34）上游的主管道（31）中。 并且每个出口与相应的电极（35或36）相关联。 电压源连接到电极（35,36），使得一个电极比另一个电极更正，用于在电极（35,36）之间流动的流体中建立具有横向于电极（35,36）的分量（E）的电场 的流动，其中场中的颗粒被吸引到电极（35,36）中的一个并且进入与其相关联的出口（33,34）。 在氟化硅聚合物形式的剥离材料的电介质涂层（38）被施加到一个电极（36）的表面，用于在流体流过导管（31）的同时抑制其上的颗粒的电镀。

公开(公告)号：WO1989012257A2

公开(公告)日：1989-12-14

申请号：PCT/NL1989000042

申请日：1989-06-05

Applicant: SPECTRUM SCIENCES B.V.

Inventor： SPECTRUM SCIENCES B.V. ,  LANDA, Benzion ,  NIV, Yehuda ,  GROSSINGER, Israel ,  ADAM, Yossi ,  LEVANON, Moshe

IPC: G03G13/01

CPC classification number: G03G13/10 ,  G03G9/12 ,  G03G13/013 ,  G03G15/104

Abstract: An imaging system comprising apparatus for forming a latent image on a surface, said latent image including a first portion having a high level of electrostatic charge, a second portion having a low level of electrostatic charge and a third portion having an intermediate level of electrostatic charge, the charges on the first, second and third portions being of the same polarity; and apparatus for developing the latent image by contacting it with a liquid toner composition comprising an insulating, nonpolar liquid having admixed therewith a first type of pigmented particles having charges of a first polarity and a second type of pigmented particles having charges of an opposite polarity, such that the first type of pigmented particles becomes deposisted onto the first portion and the second type of pigmented particles becomes deposited onto the second portion.

Abstract translation: 一种成像系统，包括用于在表面上形成潜像的装置，所述潜像包括具有高水平静电电荷的第一部分，具有低水平静电电荷的第二部分和具有中等水平静电电荷的第三部分 ，第一，第二和第三部分的电荷具有相同的极性; 以及通过使潜像显影的液体调色剂组合物与包含绝缘非极性液体的液体调色剂组合物显影的装置，所述液体调色剂组合物与第一类型具有第一极性电荷的着色颗粒和具有相反极性电荷的第二类型着色颗粒混合， 使得第一类型的着色颗粒变得沉积在第一部分上，并且第二类型着色颗粒沉积到第二部分上。