The Mead Corporation

Other

Paul C Adair

Richard F Wright

Peter Gottschalk

Joseph G O'Connor

Amy L Burkholder

Cheryl L Moore

Douglas C Neckers

S Peter Pappas

Gary B Schuster

Frederick W Sanders

Rong-Chang Liang

Gary F Hillenbrand

Jonathan S Arney

Paul D Davis

James A Dowler

Karl A Kintz

Todd M Hess

Dennis L Williams

Mary M Stanley

Homer G Duda

George D Metz

Dale R Shackle

Edward J Saccocio

Lyudmila Feldman

E Bryant Crutchfield

Robert A Landis

D Scott Proehl

Michael S Shanklin

Chuan Lee

Katherine A Gyure

David G Adkins

Michael K McLain

Michael J Moore

Carl McCrary

Seth O Harris

Frank D Loel

A photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound and an aromatic ketone and a borate salt; and photosensitive materials employing the composition where in one embodiment the composition is microencapsulated.

Photohardenable composition containing borate salts and ketone initiators

A photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound and an ionic dye-counter ion compound, said compound being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or crosslinking of said compound; and photosensitive materials incorporating the same.

Method of dental treatment

A developer sheet useful in forming images having a high density comprising a support having front and back surfaces; and a developer layer coated from a solution on said front surface, said developer layer comprising a particulate reactive material being capable of reacting with a substantially colorless chromogenic material upon contact and generating an image, a binder material, and a viscosity increasing additive is provided. The developer sheet is particularly useful in photosensitive microencapsulated imaging systems for forming overhead transparencies.

Developer sheet for forming high density images

A developer sheet comprising a support having a layer of a color developer on the surface thereof, said color developer being capable of reacting with a substantially colorless electron donating color former to produce a color image and being an acrylic or methacrylic polymer having pendant developer moieties (e.g., hydroxy aromatic or aromatic acid moieties such as salicylic or phthalic acid moieties) which are preferably metallated (e.g., zincated) or being the polymeric reaction product of vinyl salicylic acid or salt.

Vinyl developer resins

A process for making three dimensional models is disclosed which is characterized in that a photohardenable composition is used which comprises a free radical addition polymerizable or crosslinkable compound and an ionic dye-counter ion compound, said compound being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or crosslinking of said compound.

Photosensitive materials containing ionic dye compound as initiators

A receiver sheet for producing high density images, preferably in a photosensitive imaging system is disclosed. The receiver sheet is characterized by containing a particulate developer material which does not substantially compress upon the application of pressure. The resistance to pressure is accomplished by using a receiver sheet which has a discontinuous thickness or by incorporating a stilt material into the developer material. Also disclosed is an imaging system which has a discontinuous thickness donor sheet to prevent the developer material from substantially compressing upon the application of pressure.

Microroughened developer sheet for forming high density images

A composition including a cationic transition metal coordination complex and a borate anion, wherein said composition is capable of absorbing actinic radiation and producing free radicals which can initiate free radical addition polymerization of a free radical addition polymerizable or crosslinkable monomer is disclosed. The compositions are particularly useful as visible light photoinitiators.

Photosensitive composition containing a transition metal coordination

Imaging materials employing photosensitive microcapsules having improved film speed are disclosed wherein the microcapsules contain a photoinitiator system including an absorber, a coinitiator and an autoxidizer; the absorber is a compound such as an aromatic ketone, the coinitiator and the autoxidizer are different but may be compounds such as N,N-dialkylanilines; the coinitiator and autoxidizer are selected such that free radical generation and oxygen consumption occur with optimum efficiency thereby providing an imaging material having high film speed.

Imaging material employing photosensitive microcapsules containing

Photosensitive materials and compositions containing ionic dye compounds

The present invention provides a developer sheet useful in forming reproductions having a controllable gloss finish and reduced photolytic yellowing. The developer sheet comprises a support having a layer of a finely divided, thermoplastic, phenolic developer material and an anti-yellowing agent on the surface thereof. The phenolic developer material is capable of reacting with a color former to produce a visible image and is capable of coalescing into a thin film which imparts gloss to the image upon the application of heat.

Developer compositions having reduced yellowing

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

An imaging material of the type in which a radiation sensitive composition is encapsulated in a plurality of microcapsules and exposure controls the release of the internal phase from the microcapsules wherein the internal phase of the microcapsules includes a solid diluent.

Photosensitive imaging material employing photosensitive microcapsules

A developer sheet comprising a support having a layer of a color developer on the surface thereof, said color developer being capable of reacting with a substantially colorless electron donating color former to produce a color image and being an acrylic or methacrylic polymer having pendant developer moieties (e.g., hydroxy aromatic or aromatic acid moieties such as salicyclic or phthalic acid moieties) which are preferably metallated (e.g., zincated) or being the polymeric reaction product of vinyl salicylic acid or salt.

The present invention provide a dye-sensitized photopolymerizable composition comprising a free radical addition polymerizable material, and a photoinitiator, the photoinitiator consisting essentially of a photoreducible dye, a thiol, and an N,N'-dialkylaniline.

Photocurable composition containing a photoreducible dye a thiol and an

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

Springboro, OH, United States of America

Paul C Adair