| 摘要 |
PURPOSE:To improve the transfer efficiency of the dielectric medium of an electrostatic recording device and to enhance abrasion resistance by incorporating an F-contg. block copolymer in a resin having a specified hardness and a specified volume resistivity as a dielectric layer. CONSTITUTION:The dielectric layer is made of a resin having a pencil hardness of H after forming a film, and a volume resistivity of >=10<13>OMEGA.cm, such as polyimide or epoxy acrylate. This resin contains the F-contg. block copolymer, such as an A-B type block copolymer contg. fluoroalkyl groups, to obtain the dielectric layer. This dielectric layer is laminated on a conductive base made of aluminum or stainless steel or the like to obtain a recording medium. The addition of the F-contg. block copolymer permits the transfer efficiency of the recording medium to be enhanced and good images to be formed for a long period, and the abrasion resistance to be enhanced. |
