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US 4,007,042 AGranted
Migration imaging method
AssigneeXerox Corporation
InventorsDavid A. Buckley, Roger N. Ciccarelli, Frank G. Belli
Life of this patent
Estimating the term…
Abstract
A migration imaging system including imaging members comprising a substrate overcoated with a softenable layer, and migration marking material, with the softenable layer having a thin surface skin of material having a higher viscosity than the remainder of the softenable material layer.
Claims17
An imaging method comprising:
- providing an imaging member comprising a supporting substrate, a layer of softenable material containing migration marking material overlying said substrate, said softenable material capable of having its resistance to migration of migration marking material decreased sufficiently to allow migration of migration marking material in depth in said softenable material toward said substrate, a surface skin located at the entire free surface area of said softenable layer formed by exposing said free surface to hardening radiation sufficiently to form said surface skin having a thickness in the range of not greater than about 0.3 micron and having a viscosity during imaging of said member greater than the viscosity of the softenable material of said softenable layer;
- applying an electrical imagewise migration force to the migration marking material;
- developing said member by decreasing the resistance to migration of migration marking material in depth in the softenable material at least sufficient to allow migration of migration material whereby migration marking material migrates at least in depth in said softenable material toward the substrate in imagewise configuration.
An imaging method comprising:
- providing an imaging member comprising a supporting substrate a single layer of softenable material containing migration marking material overlying said substrate, said softenable material containing as the entire upper portion thereof a surface skin having a chemical composition different from the bulk of the softenable material and having a thickness not greater than about 0.3 micron and a viscosity during imaging of said member greater than that of the bulk of said softenable layer of softenable material, said softenable material capable of having its resistance to migration of migration marking material dispersed sufficiently to allow migration of migration marking material in depth in said softenable material toward said substrate;
- applying an electrical imagewise migration force to the migration marking material,
- developing said member by decreasing the resistance of migration of migration marking material in depth in the softenable material at least sufficient to allow migration of migration material whereby migration marking material migrates at least in depth in said softenable material toward the substrate in imagewise configuration.
Dependencies are inferred from the claim text.