Apparatus and process for preparation of migration imaging members
AssigneeXerox Corporation
InventorsPhilip H. Soden, Arnold L. Pundsack
Life of this patent
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Abstract
Disclosed is an apparatus for evaporation of a vacuum evaporatable material onto a substrate, said apparatus comprising (a) a walled container for the vacuum evaporatable material having a plurality of apertures in a surface thereof, said apertures being configured so that the vacuum evaporatable material is uniformly deposited onto the substrate; and (b) a source of heat sufficient to effect evaporation of the vacuum evaporatable material from the container through the apertures onto the substrate, wherein the surface of the container having the plurality of apertures therein is maintained at a temperature equal to or greater than the temperature of the vacuum evaporatable material.
Claims28
An apparatus for evaporation of a vacuum evaporatable material onto a substrate, said apparatus comprising (a) a walled container for the vacuum evaporatable material having a plurality of apertures in a surface thereof, said apertures being configured so that the vacuum evaporatable material is uniformly deposited onto the substrate;
- and (b) a source of heat sufficient to effect evaporation of the vacuum evaporatable material from the container through the apertures onto the substrate, wherein the surface of the container having the plurality of apertures therein is maintained at a temperature equal to or greater than the temperature of the vacuum evaporatable material.
A vacuum coating apparatus comprising a vacuum chamber containing (a) a migration imaging member comprising a first conductive layer and at least one additional layer, wherein at least one of the additional layers is a layer of softenable material;
- (b) a migration imaging member supply;
- (c) a migration imaging member takeup, the migration imaging member defining a path between the migration imaging member supply and the migration imaging member takeup;
- (d) a first member in contact with the migration imaging member and disposed in the path between the migration imaging member supply and the migration imaging member takeup, said first member being heated to a temperature which reduces the viscosity of the softenable material on the migration imaging member to a viscosity sufficiently low to enable material vacuum evaporated thereon to become embedded below the surface of the softenable layer;
- (e) a second member in contact with the migration imaging member and disposed in the path between the first member and the migration imaging member takeup, said second member being at a temperature which cools the softenable material on the migration imaging member sufficiently to prevent blocking of the softenable layer in the migration imaging member takeup;
- (f) a walled container for a vacuum evaporatable migration marking material disposed in the path between the first member and the second member, said container having a plurality of apertures in a surface thereof, said apertures being configured so that the vacuum evaporatable migration marking material is uniformly deposited on the substrate;
- and (g) a source of heat sufficient to effect evaporation of the vacuum evaporatable migration marking material from the container through the apertures onto the substrate, wherein the surface of the container having the plurality of apertures therein is maintained at a temperature equal to or greater than the temperature of the vacuum evaporatable migration marking material.
A method for evaporation of a vacuum evaporatable material onto a substrate comprising (a) heating a container of the vacuum evaporatable material to a temperature sufficient to prevent condensation of the vacuum evaporatable material at a plurality of discharge apertures, wherein the discharge apertures are configured so that the vacuum evaporatable material is uniformly deposited onto the substrate;
- (b) depositing the vacuum evaporatable material onto the substrate as the substrate is moved adjacent the discharge apertures.
Dependencies are inferred from the claim text.