Bilayer topcoats for organic photoconductive elements
AssigneeMinnesota Mining and Manufacturing Company
InventorsDavid E. Brown, Susan K. Jongewaard, Roger I. Krech, Gregory L. Zwadlo
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Abstract
The use of a barrier layer between photoconductor layers and release layers in electrographic imaging materials provides enhanced performance, particularly in multiple use of the imaging materials in liquid toned imaging processes.
Claims19
An organic photoconductor element for use in electrophotographic imaging comprising an organic photoconductive layer having on one surface thereof a barrier layer on said photoconductor layer and a release layer topcoat on said barrier layer, said barrier layer inhibiting the transport of material between said photoconductor layer and said release layer and said barrier layer comprising an organic polymeric film forming layer having a thickness of at least 0.02 micrometers and which barrier layer is of a different chemical composition than said release layer.
An organic photoconductor element for use in electrophotographic imaging comprising an organic photoconductive layer having on one surface thereof a barrier layer on said photoconductor layer comprising a polymer selected from the group consisting of acrylic polymers and cellulosic polymers and a release layer topcoat on said barrier layer, said barrier layer comprising an organic polymeric film forming layer having a thickness of at least 0.02 micrometers and is of a different chemical composition than said release layer.
An organic photoconductor element for use in electrophotographic imaging comprising an organic photoconductive layer having on one surface thereof a barrier layer on said photoconductor layer and a release layer topcoat on said barrier layer, said barrier layer inhibiting the transport of material between said photoconductor layer and said release layer and said barrier layer comprising an organic polymeric film forming layer having a thickness of at least 0.02 micrometers and which barrier layer is of a different chemical composition than said release layer, said barrier layer comprising a polymer having polarity, a glass transition temperature greater than 40.degree. C., and a degree of crosslinking in excess of 1.01.
An organic photoconductor element for use in electrophotographic imaging comprising an organic photoconductive layer having on one surface thereof a barrier layer on said photoconductor layer and a release layer topcoat on said barrier layer, said barrier layer comprising an organic polymeric film forming layer having a thickness of at least 0.02 micrometers and is of a different chemical composition than said release layer.
Dependencies are inferred from the claim text.