Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1990-04-10
1993-04-13
Hess, Bruce H.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428330, 428402, 428403, 4284111, 428430, 428913, 430 32, 430 69, B32B 516
Patent
active
052021793
ABSTRACT:
An electrostatic attracting sheet which is used in a paper sheet-attracting device of X-Y plotter or the like, the attracting sheet being made of a high polymer substance selected from a group consisting of plastics such as polyurethane, polyacetal, polyamide and polyester, and synthetic rubbers and electrically conductive coated crystal whiskers of potassium titanate dispersed in the high polymer substance. In a first embodiment, the whiskers are homogeneously dispersed in the attracting sheet at 5 to 15 wt. % of the substance, the whiskers being 0.1 to 0.3 .mu.m in diameter, 10 to 30 .mu.m in length and coated with tin or antimony, to produce a sheet having a thickness of 0.2 to 0.8 mm and a volume resistivity on the order of 10.sup.13 .OMEGA.cm. In a second embodiment, the whiskers are distributed in the attracting sheet, in such a state that their longitudinal axes align with a direction in which a surface of the attracting sheet extends, at 2 to 8 wt. % of the substance, the whiskers being 0.2 to 0.5 .mu.m in diameter, 10 to 20 .mu.m in length and coated with a white conductive substance such as tin, antimony, nickel, phosphor or aluminum to produce a sheet having a thickness of 0.2 to 0.8 mm and a volume resistivity on the order of 10.sup.12 to 10.sup.14 .OMEGA.cm.
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Evans Elizabeth
Hess Bruce H.
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