Electrographic receiving material

Abstract

Abstract 1,237,386. Electrographic image-receiving sheets. EASTMAN KODAK CO. 3 Oct., 1968 [9 Oct., 1967], No. 46896/68. Heading B2E. [Also in Division G2] An electrographic image-receiving element comprises a support having coated thereon a layer 1 to 10Á thick of an insulating binder and having embedded in the layer and protruding from the surface thereof randomly distributed filler particles of diameter 2 to 50Á. The protruding particles are used to space 12 the latent-image bearing member 11 away from the element. On application of a potential across the member 11 and the element, the electrostatic image pattern is transferred to the element. The support 14 may be paper coated on both sides with a clay subbing and sized on one side with polyvinylbenzyl-ammonium chloride or the support may be glass, cellulose acetate, polyethylene terephthalate, polystyrene or polyethylene-coated paper. The polymeric binder 15 is preferably a copolymer of vinyl butyral, vinyl acetate and vinyl alcohol but other polymers are specified. The binder layer contains coloured or white pigment 16 such as BaSO 4 , ZnO, TiO 2 , ZnCO 3 , CaCO 3 or bentonite. The protruding particles 13 may be BaSO 4 , ZnO, TiO 2 , ZnCO 3 , CaCO 3 , polystyrene, or glass beads. The protruding particles can be spherical, conical, cylindrical or polyhedral. The prior art discloses receiving elements with no protruding particles or with spacing particles dusted on the surface.

Inventors

• 👤 Eugene Patrick Gramza
• 👤 Gene Harold Robinson

Bibliographic Details