The Mead Corporation

Jesse Hipps, Sr

Rong-Chang Liang

Lyudmila Feldman

William A Hammann, Iv

Teresa M Thomas

Paul D Davis

Jing-Den Chen

Amy L Burkholder

T Kay Kiser

Michael S Shanklin

Claire M Plageman

A photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound, a cationic dye-borate anion complex, and a borate salt, said complex being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or crosslinking of said compound.

Photohardenable compositions containing a borate salt

The present invention relates to a method for exposing a photosensitive imaging sheet using a low temperature exposure step. The method includes the steps of:

Process for forming images using a low temperature exposure step

A photohardenable composition comprising an addition polymerizable or crosslinkable material, a photoinitiator composition capable of initiating polymerization or crosslinking of said polymerizable or crosslinkable material, and a compound of the formula ##STR1## wherein Q represents --C.dbd.O or --C--OH; X represents S or N which is unsubstituted or substituted with alkyl or aryl groups;

Photohardenable composition containing five member aromatic group with

A process for producing microcapsules comprising the steps of: adding a hydroxy or amine functionalized acrylic resin or copolymer to an aqueous emulsion including a dispersed internal phase composition;

Method for producing microcapsules and photosensitive microcapsules

A recording sheet which comprises a substrate having a large of a metal on the surface thereof, and a layer of microcapsules, said layer of microcapsules including a coupling agent to improve the adhesion of said microcapsule layer to said metal layer; the coupling agent is preferably a silane.

Microcapsule coating compositions containing coupling agents for

A recording sheet which comprises a substrate having a layer of a metal on the surface thereof and a layer of microcapsules, said microcapsules being bonded to one another by means of a crosslinking agent which has reactively interacted with reactive moieties on the surface of said microcapsules, to improve the adhesion of said microcapsule layer to said metal layer.

Recording sheet having improved cohesion and adhesion of microcapsules

A photosensitive composition resistant to short time scale reciprocity failure is disclosed. The composition comprises microcapsules having an internal phase containing an image forming agent; a photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound and a photoinitiator; and a viscosity modifier for increasing the viscosity of said internal phase.

Prevention of short time scale reciprocity failure by viscosity control

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.

Growing community of inventors

Miamisburg, OH, United States of America

Jesse Hipps, Sr