Abstract: A migration imaging system wherein migration imaging members typically comprising a substrate, a layer of softenable material, and migration marking material, additionally comprises an overlayer of electrically conductive material which is electrically connected to electrically charge the imaging member.

Abstract: Material from a layer of migration material spaced apart from at least one surface of, but contacting a softenable layer is caused to imagewise selectively migrate to at least locations in depth in the softenable layer, by (A) subjecting said migration material to an imagewise migration force and changing the resistance of said softenable layer, to migration of migration material or by (B) subjecting said migration material to a migration force and imagewise changing the resistance of said softenable layer to migration of migration material.

Abstract: Friction charging of insulating and photoconductive insulating members is accomplished in the presence of an insulating liquid. In a preferred embodiment, the insulating liquid is a developer liquid and the friction charging step may simultaneously erase a previously developed image.

Abstract: A migration imaging system wherein migration imaging members typically comprising a substrate, a layer of softenable material, and migration marking material, additionally contain one or more overlayers of material to produce improved results in the imaging system. The overlayer may variously comprise another layer of softenable material, a layer of material which is harder than the softenable material layer, or a gelatin layer.

Abstract: Charging and imaging methods including providing an imaging member having a dielectric substrate, an overlayer of softenable material and a fracturable layer of particulate material, charging said member either by placing said member with the dielectric substrate contacting an electrical ground and electrically charging the opposite side thereof, or by charging each side of said member to a different polarity. Such an imaging member is imaged by forming an electrostatic latent image on said member, and developing said member whereby selective portions of the particulate material migrate in imagewise configuration toward the dielectric substrate.

Abstract: A system for "capturing" charge within the structure of an electrophotographic imaging member in the imagewise exposed areas and thereby creating an electrostatic latent image in the imagewise exposed areas which in preferred embodiments of discrete non-touching particles of electrically photosensitive material stands up better against time, heat and light. Said imaging member is comprised of an insulating layer and electrically porous, mechanically discontinuous electrically photosensitive layer contacting said insulating layer. The process includes (1) charging, (2) imagewise exposure, and (3) promoting the dissipation of charge from the areas which are relatively nonexposed compared to the exposed areas, leaving behind an electrostatic latent image in the imagewise exposed areas. The electrostatic image thus created may be used or developed by any suitable technique other than by causing imagewise migration of said electrically photosensitive material.

Abstract: An apparatus in which the manual placement of successive original documents onto the platen of a reproducing machine is facilitated. A plurality of original documents are located on the platen with the lowermost document being positioned thereon for reproduction. After being reproduced, the lowermost document is removed from the platen while the uppermost document is retained thereon enabling it to be subsequently reproduced.

Abstract: An imaging system using a migration imaging member comprising a softenable photoconductive material with a fracturable layer of migration marking material contacting the softenable photoconductive material and having the fracturable layer spaced apart from at least one surface of the softenable layer and typically contiguous to the free surface of the softenable material. Imaging with a member comprising a softenable photoconductive binder material with marking particles therein dispersed throughout said softenable binder is also disclosed. Imaging is accomplished by providing a migration force across the migration imaging member and developing the member whereby the migration marking material migrates in depth in the softenable layer in imagewise configuration.