公开(公告)号：US3918971A

公开(公告)日：1975-11-11

申请号：US13517971

申请日：1971-04-19

Applicant: PITNEY BOWES INC

Inventor： ZWEIG GILBERT

IPC: G03G13/22 ,  G03G13/14

CPC classification number: G03G13/22 ,  Y10S101/37

Abstract: A photoconductive insulating layer coated onto a substrate is rendered uniformly non-conductive to make multiple copies by negatively charging the surface. The layer is next sensitized by positively charging the surface after which it is imaged and conventionally developed with electrostatically attractable material. The electrostatically attractable material is then conventionally transferred in offset fashion onto a copy sheet. Surface charge is lost and the latent image is thereby degraded during the process of toning the imaged photoconductive surface and transferring the toner to the copy sheet. Repetitive copies can then be made from the latent image by passing a uniform positive charge over the layer to rejuvenate the latent image and repeating the developing and transferring steps each time.

Abstract translation: 涂覆在基板上的光电导绝缘层被均匀地不导电，以通过对表面负电荷来进行多个拷贝。 接着通过对其表面进行正电充电，然后使其成像并用静电吸引材料常规地显影来使该层敏感。 然后将静电吸引材料通常以偏移方式转印到复印纸上。 在调色成像的光电导表面并将调色剂转印到复印纸的过程中，表面电荷损失并且潜影因此劣化。 然后可以通过在层上通过均匀的正电荷来使潜像重复复印，以使潜像恢复活力，并且每次重复显影和转印步骤。

公开(公告)号：US3605693A

公开(公告)日：1971-09-20

申请号：US3605693D

申请日：1969-09-09

Applicant: PITNEY BOWES INC

Inventor： ZWEIG GILBERT

IPC: G03G15/10 ,  B05B5/02 ,  G03G13/10

CPC classification number: G03G15/108

Abstract: A POROUS, ELECTRICALLY FLOATING ELECTRODE, SUCH A METAL SCREEN, IS EMPLOYED IN A LIQUID TONER PROCESS FOR ELECTROSTATIC IMAGE DEVELOPMENT.