The Mead Corporation

James A Dowler

Paul C Adair

Edward J Saccocio

Joseph G O'Connor

Richard Sutera

Lyudmila Feldman

William A Hammann, Iv

D Scott Proehl

Chuan Lee

Russell H Tobias

Katherine A Gyure

George D Metz

Roger E Jerry

Carl McCrary

Peter Gottchalk

Peter G Engeldrum

Donna L Ruder

A photosensitive material includes a support having microcapsules and a color correction dye on its surface. The microcapsules include first, second and third sets of microcapsules, each set containing an internal phase. The first set of microcapsules is sensitive to red light and is associated with a cyan image-forming agent, the second set of microcapsules is sensitive to green light and is associated with a magenta image-forming agent, and the third set of microcapsules is sensitive to blue light and is associated with a yellow image-forming agent. The cyan, magenta and yellow image forming agents are respectively soluble in the internal phases of the first, second and third sets of microcapsules whereas the color correction dye is insoluble in the internal phase. The first, second and third sets of microcapsules are present in one or more layers containing a binder on the surface of the support. The color correction dye absorbs at least one of red, green, and blue light. The color correction dye is present in the binder of the one or more layers of microcapsules or is present in a separate layer containing a binder such that the film speed of at least one of the first, second and third sets of microcapsules is reduced and thereby the photosensitive material exhibits improved gray scale.

Photosensitive microcapsule imaging system having improved gray scale

A method is described for forming a transparency containing images having high color density comprising the steps of:

Method for producing overhead transparencies having high color density

An imaging sheet used for achieving color balance in a full-color imaging system is disclosed. The sheet is characterized by utilizing three sets of microcapsules, each containing a different colorless image-agent and a photohardenable or photosoftenable composition, and a corrective dye associated with the substrate. Association of the corrective dye with the substrate achieves color balance by equalizing the speed of the different colorless color-forming microcapsules.

Imaging sheet for achieving color balance

Processes for forming metal patterns such as electric circuits and photosensitive materials useful therein are disclosed wherein a layer of photosensitive microcapsules is used to form a pattern of an adhesive, a metallic pigment, a metal salt or a reducing agent by exposing the layer of microcapsules to actinic radiation and transferring the internal phase to a support member. A pattern of the pigment salt or reducing agent is thereby formed on the support member which is treated with an electroless plating solution to form the metal pattern.

Method and photosensitive material for forming metal patterns employing

A photosensitive material comprising a support having a layer of microcapsules on the surface thereof, said microcapsules containing a color precursor and a photohardenable or photosoftenable composition, and said support being a highly reflective, non-difuse polymeric film or coated paperstock.

Microencapsulated imaging system employing a metallized backing

A method for treating an imaging sheet is disclosed. The method includes the steps of providing an imaging sheet having coated on one of its surfaces a layer of microcapsules, the microcapsules containing a radiation curable composition and having an image-forming agent associated therewith, heating the sheet; and image-wise exposing the layer of microcapsules to actinic radiation; wherein the heating step is performed prior to or after the image-wise exposing step. The method reduces or removes damage defects on the imaging sheet and, in some instances, extends the dynamic range of the image-forming agents.

Imaging system utilizing heat treatment

A developer sheet useful in forming reproductions which have a controllable gloss finish or in forming transparencies comprising a support having a layer of a finely divided, thermoplastic, developer material on the surface thereof, said developer material being capable of reacting with a color precursor to produce a visible image and being capable of coalescing into a thin film which imparts gloss to said image upon application of heat and/or pressure. The developer sheet comprising a support having a layer of a finely divided thermoplastic developer material on the surface thereof can additionally comprise oil-containing microcapsules such that upon microcapsule rupture, the oil plasticizes the developer material.

Growing community of inventors

Franklin, OH, United States of America

James A Dowler