公开(公告)号：US3777214A

公开(公告)日：1973-12-04

申请号：US3777214D

申请日：1971-11-26

Applicant: CONTINENTAL CAN CO

Inventor： TAYLOR J ,  CHAMBERS W

IPC: B41F15/00 ,  B41F17/00 ,  G03G15/02 ,  B41F9/00 ,  B05B5/00

CPC classification number: G03G15/02 ,  B41F15/00 ,  B41F17/00 ,  G03G15/0291 ,  Y10S101/37

Abstract: Provisions for electrostatically charging particles, as in an electrostatic printing operation, include a corona source for providing ionization in a predetermined region, a plate electrode spaced from the corona source, a grid electrode adjacent the corona source and spaced from the plate electrode and a nozzle for directing a flow of the finely divided particles intermediate the plate and grid electrodes. The grid electrode draws ions from the corona source into the region intermediate the plate and grid electrodes. A rotatable drum may be provided proximate the region of electrostatic charging of the particles to receive the particles on the surface thereof for transportation to a printing or application zone. Alternatively, a stencil screen may be provided proximate the region of charging of the particles to direct passage of the particles therethrough to define a desired image upon a substrate proximate the stencil screen.

Abstract translation: 如在静电印刷操作中静电充电颗粒的设置包括用于在预定区域提供电离的电晕源，与电晕源隔开的平板电极，邻近电晕源并与板电极隔开的栅电极和喷嘴 用于引导细碎颗粒在板和栅电极之间的流动。 栅电极将离子从电晕源吸入板和栅电极之间的区域。 可以在颗粒的静电充电区域附近提供可转动的滚筒，以在其表面上接纳颗粒以便运输到印刷或涂布区域。 或者，可以在颗粒的充电区域附近提供模板丝网，以引导颗粒通过其中以在靠近模板丝网的基板上限定所需的图像。