E.i. Dupont De Nemours and Company

Mario Grossa

Manfred A Sondergeld

Bernhard Metzger

Ursula Annerose Kraska

Roxy N Fan

Werner Abele

Helmut G Sandner

Ronald John Convers

Udo Dietrich Bode

Ashok Kamalaksha Kudva

Dieter H Tigler

Steven Max Kalo

Karl-Heinz Wiedenmann

Eustathios Vassiliou

Walter R Hertler

John Alan Lawton

Howard E Simmons

Otto Pilz

Paola Gallo

Hubert Weinert

A tonable, photosensitive composition, the adhesion properties of which are controlled by a polycaprolactone having an average molecular weight of at least 50,000 and a process for preparing polychromatic images by means of such a composition are described.

Tonable, photosensitive composition and process for making polychromatic images

This invention makes available a photopolymerizable material containing at least one polymeric binder, photopolymerizable monomer and, at least one photoinitiator, and having a special shear modulus and a specific thickness. These photopolymerizable materials are used in processes for preparing images, especially multiple color proofs. Temporary supports and pigmented transfer materials specifically designed for the preparation of multiple color proofs are described. A pigmented element having a pigmented transfer layer with a polymeric component of polycaprolactone, polytetrahydrofuran and mixtures thereof is disclosed.

Multiple color proof temporary supports, photopolymerizable materials and pigmented transfer materials

Monochrome and polychrome color proofs, for the graphic arts industry, having an image carrier containing two layers A and B to control optical dot growth are described. Layer A contains at least one polyolefin and, in a preferred embodiment, a light-reflecting white pigment. Layer B contains at least one binder, at least one light-reflecting white pigment at between 50% and 90% by weight relative to Layer B, and at least one light-absorbing pigment. A process and a means for preparing such monochrome and polychrome color proofs are described.

Monochrome and polychrome color proofs with low optical dot growth and a

This invention makes available processes for preparing images, especially color proofs. A layer with imagewise tacky and nontacky areas is toned. Toner adhering to the tacky areas is transferred first onto a temporary support and from there onto an image receptor.

Process for preparing multiple color proofs

A method and apparatus, where high viscosity liquids, including pseudoplastic, plastic flow, and thixotropic liquids, as well as gels, semi-solid, and solid materials are viscosity reduced during coating and allowed to increase in viscosity during imaging steps, for use in Solid Imaging applications. Use of these materials and the apparatus improves coating uniformity and final object tolerances.

Method for forming solid objects utilizing viscosity reducible

A process for preparing images, particularly color proof prints, in which tacky and non-tacky areas are produced by imagewise exposure of a radiation-sensitive layer is described. The tacky areas are toned with a toner having a tackiness that can be increased by irradiation with actinic radiation.

Process for making images employing a toner which has a tackiness that

The present invention concerns a phototackifiable composition useful as a coating on a substrate consisting of an optically clear blend of two or more polymers and a photosensitive compound that forms a strong acid on exposure to actinic radiation. The invention also relates to a process for coating such a composition on a support and toning the image-wise exposed composition on the support.

Process for creating a tacky tonable image surface through exposure of a

An imaging apparatus produces a film of photohardened composition by exposing a layer of photohardenable composition to actinic radiation through a surface of a barrier transparent to the radiation and in contact with the composition at an interface therewith. An inhibition layer is created within the photohardenable composition in contact with the interface that inhibits photohardening of the composition within the inhibition layer during exposure, thereby precluding adhesion of any photohardened composition to the barrier.

Solid imaging system using photohardening inhibition

An imaging method and apparatus produces a film of photohardened composition by exposing a layer of photohardenable composition to actinic radiation through a surface of a barrier transparent to the radiation and in contact with the composition at an interface therewith. An inhibition layer is created within the photohardenable composition in contact with the interface that inhibits photohardening of the composition within the inhibition layer during exposure, thereby precluding adhesion of any photohardened composition to the barrier.

A process for the preparation of a color filter is described utilizing an exposure step of a light-sensitive material, imagewise exposing, toning and heat treating.

Process for the preparation of optical color filters

Method of forming an integral three-dimensional object from a photohardenable liquid composition with low shrinkage containing a linear polymer which is soluble in the liquid but separates into a separate phase upon photohardening.

Method of forming a three-dimensional object comprising additives

An integral three-dimensional object is formed from a photohardenable liquid composition containing radiation deflecting matter whereby a difference in an index of refraction increases by more than 0.01 after photohardening.

Solid imaging method using photohardenable materials of self limiting

An integral three-dimensional object is formed from a photohardenable liquid composition containing latent deflecting matter which is soluble in the liquid but separates into a separate phase upon photohardening.

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Dreieich, Germany

Mario Grossa