公开(公告)号：WO1994025262A1

公开(公告)日：1994-11-10

申请号：PCT/US1994004139

申请日：1994-04-15

Applicant: REXHAM GRAPHICS INC.

Inventor： REXHAM GRAPHICS INC. ,  KATSEN, Boris, J. ,  TAYLOR, Dene, H. ,  HIMMELWRIGHT, Richard, S. ,  KLAUSNER, Cynthia, F. ,  SPORBERT, Edward, W. ,  STEWART, Barbara, J. ,  CAVANAUGH, John ,  TURI, Eran

IPC: B32B03/00

CPC classification number: G03G5/104 ,  G03G5/0202 ,  G03G5/0217 ,  G03G5/10 ,  Y10T428/24802 ,  Y10T428/24893 ,  Y10T428/24934 ,  Y10T428/249921 ,  Y10T428/25 ,  Y10T428/252 ,  Y10T428/31 ,  Y10T428/31504

Abstract: Provided is a composite material comprising a carrier, a conductive layer formed on the carrier, and a dielectric layer containing spacer particles formed on the conductive layer. The dielectric layer has an abrasion factor less than about 0.3 determined by a brass shim abrasion method, and a substantially uniform distribution of spacer particles substantially free of flat spots greater than about 100 microns in the x-y direction and 1500 square microns in area on any part of the surface. The spacer particles of the dielectric layer of the composite material preferably are amorphous silica. The composite material is useful in electrostatic imaging technology and provides images substantially free of defects, including artifacts or flares, dropouts and nib writing. Also provided is a process which permits the creation of very stable dispersions of solid particles in a dispersing medium useful for both the dielectric and conductive layers of the composite material of the invention. A white or colored conductive ground plane is also provided.

Abstract translation: 提供了一种复合材料，其包含载体，形成在载体上的导电层和包含形成在导电层上的间隔物颗粒的介电层。 电介质层具有通过黄铜垫片磨损方法测定的小于约0.3的磨损因子，以及在xy方向上基本上没有大于约100微米的平均斑点的基本上均匀的分布，并且在任何部分上具有1500平方微米的面积 的表面。 复合材料的介电层的间隔颗粒优选为无定形二氧化硅。 复合材料可用于静电成像技术，并提供基本上没有缺陷的图像，包括伪影或耀斑，辍学和笔尖。 还提供了一种方法，其允许在可用于本发明的复合材料的介电层和导电层的分散介质中产生非常稳定的固体颗粒分散体。 还提供白色或彩色导电接地层。