Transparencies for electrostatic printing

摘要

A sheet material for electrostatic production, as by xerography, of transparencies comprising a synthetic polymeric film base having at least one surface receptive to adhesion and fusion of toner. The toner-receptive surface of the film base has a two-layer coating which comprises a first layer of a conformable material coated over the surface of the polymeric film base and a second layer of a rigid material coated over the first layer. The first layer is soft enough to conform to the shape of toner particles coming in contact with the sheet material during use. The second layer provides the film with a non-sticky, lower friction surface in order to allow the sheets to be fed to a copying machine from a stack. This two-layer coating allows the toner used in an electrostatic printing process to be bonded to the sheet material by means of cold pressure fusing so that images created by the electrostatic process can be fixed without heat.