Electrographic process for producing an image with depth perception and resulting structure
AssigneeArmstrong World Industries, Inc.
InventorsWalter J. Lewicki, Jr., John H. Bowers
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Abstract
This invention involves a process for producing in an electrographic system a product having an image depth perception. The process includes dispensing in a system a first dielectric layer and electrographically imaging this layer and developing the image. A second dielectric layer is subsequently dispersed in the system, imaged and developed. A preselected plurality of dielectric layers may be imaged and developed. These developed layers are superimposed and adhered together to form a multilayered substrate having a depth perception. The layers can be superimposed, adhered together and overcoated either before or after separation from the system.
Claims19
An electrographic process for producing an imaged substrate having an image depth perception comprising the following steps:
- (a) in an electrographic system dispensing a first dielectric layer on a movable conductive means;
- (b) passing this first dielectric layer on the conductive means to an imaging station where a first electrostatic latent image is deposited upon the dielectric layer;
- (c) subsequently passing the first latent image formed thereby to a developer station where the first latent image is developed on said first dielectric layer to form thereby a first imaged dielectric surface;
- (d) subsequently dispensing a second dielectric layer on top of said first dielectric layer;
- (e) passing said second dielectric layer to an imaging station where a second electrostatic latent image is deposited thereon;
- (f) passing this second electrostatic image to a developer station where the second image is developed on said second dielectric layer to form thereby a second imaged dielectric surface;
- (g) superimposing and adhering at least two of the resulting dielectric layer together, at least two of which are image-developed to from thereby a multilayered dielectric structure;
- (h) continuing step (a)-(g) for a preselected number of runs;
- (i) overcoating at least one imaged dielectric surface at a time after development of said first latent image;
- and
- (j) removing said multilayered dielectric structure at a time after development of said second dielectric layer.
An electrographic process for producing an imaged substrate having an image depth perception comprising the following steps:
- (a) in an electrographic system dispensing a first dielectric material or layer on a movable conductive means;
- (b) passing this first dielectric layer on the conductive means to an imaging station where a first electrostatic latent image is deposited upon the dielectric layer;
- (c) subsequently passing the first latent image formed thereby to a developer station where the first image is developed on said first dielectric layer;
- (d) subsequently dispensing a second dielectric material or layer on top of said first dielectric layer;
- (e) passing said second dielectric layer to an imaging station where a second electrostatic latent image is deposited;
- (f) passing this second electrostatic image to a developer station where the second image is developed on said second dielectric layer and removed from the system;
- (g) continuing steps (a)-(f) for a preselected number of runs;
- (h) superimposing and adhering at least two resulting dielectric layers together at least two of which are imaged-developed to form thereby a multilayered dielectric structure having at least one developed upper and one developed lower dielectric layer;
- (i) overcoating at least one upper dielectric layer and subsequently removing said multilayered dielectric structure from said system;
- and
- (j) removing said multilayered dielectric structure at a time after development of said second dielectric layer.
An electrographic process for producing an imaged substrate having an image depth perception comprising the following steps:
- (a) in an electrographic system dispensing a first dielectric material or layer on a movable conductive means;
- (b) passing this first dielectric layer on the conductive means to an imaging station where a first electrostatic latent image is deposited upon the dielectric layer;
- (c) subsequently passing the first latent image formed thereby to a developer station where the first image is developed on said first dielectric layer;
- (d) passing the dielectric layer containing this first image to a separation station where said dielectric layer is removed from the system;
- (e) dispensing a second dielectric material or layer on the movable conductive means;
- (f) passing said second dielectric layer to an imaging station where a second electrostatic latent image is deposited;
- (g) passing this second electrostatic image to a developer station where the second image is developed said second dielectric layer and removed from the system;
- (h) continuing steps (a)-(g) for a preselected number of runs;
- (i) superimposing and adhering at least two resulting imaged-developed dielectric layers together to form thereby a multilayered dielectric substrate having at least one upper and one lower dielectric layer;
- and subsequently
- (j) overcoating at least said upper dielectric layer.
An electrographically imaged medium comprising a base substrate, at least two electrographically imaged dielectric layers, and at least one overcoating layer, said base substrate having positioned thereover said dielectric layers, said dielectric layers having a resistivity of at least 10.sup.12 ohm centimeters and capable of retaining an electrostatic charge pattern, each dielectric layer having a thickness of at least 0.2 mils and each comprising at least one colored image different in color from other images on other dielectric layers in said imaged medium, an outermost imaged dielectric layer having on at least an outermost surface an overcoating layer, and said overcoating layer having a thickness of from about 0.2-40 mils.
Dependencies are inferred from the claim text.