The Mead Corporation

T Kay Kiser

Edward J Saccocio

Richard F Wright

Lyudmila Feldman

Donald L Head

Erik K Nelson

Jesse Hipps, Sr

A method for forming images on a non-reactive substrate such as plain paper is disclosed, comprising the steps of: image-wise exposing an imaging sheet, said imaging sheet comprising a support having a layer of photosensitive microcapsules on the surface thereof, said microcapsules containing a photohardenable or photosoftenable composition including a photoinitiator, and a color precursor; assembling said image-wise exposed imaging sheet with a developer-donor sheet; subjecting said assembly to a uniform rupturing force to cause said photosensitive microcapsules to rupture and transfer an image-wise pattern of said color precursor to said developer-donor sheet thereby forming an image thereon; separating said imaging sheet from said developer-donor sheet; assembling said developer-donor sheet bearing said image with a sheet of plain paper to form a second assembly; and subjecting said second assembly to heat and a uniform force to transfer said developer to said non-reactive substrate.

Method for forming images on plain paper

A method for producing images utilizing photohardenable microcapsules and a reversal phenomenon is disclosed. The microcapsules contain a color former, a photopolymerizable or cross-linkable monomer and a photoinitiator. A substrate containing the microcapsules is image-wise exposed to a high intensity, short term exposure of actinic radiation to cause reversal in the exposed microcapsules. The substrate is then given an overall exposure to polymerize the microcapsules which had not completely reversed. The microcapsules are then ruptured in the presence of a developer material to produce a negative image. In addition the inventive method may be used to produce copies by a 'direct-write' copying process.

Negative working imaging process employing photosensitive microcapsules

The present invention relates to a high resolution full color exposure device using electronically generated masks, from computer output, for color separations which yield full color hard-copy. A blue color separation is electronically generated and a photosensitive material is exposed to a first wavelength through the blue color separation. A green color separation is then electronically generated and the same photosensitive material is exposed to a second wavelength through the green separation. A red color separation is electronically generated and the same photosensitive material is exposed to a third wavelength through the red color separation. Upon development of the photosensitive material, a full color image is formed.

High resolution full color exposure device using an electronically

Imaging sheets having a coating containing chromogenic material and a photosensitive composition, with at least the photosensitive composition encapsulated in rupturable microcapsules as an internal phase, are processed by free particle abrasion to rupture the microcapsules coating the surfaces of the imaging sheets by establishing relative motion between the imaging sheets and a body of free particles.

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Kettering, OH, United States of America

T Kay Kiser