E.i. Dupont De Nemours and Company

Arthur J Taggi

Frank L Schadt, Iii

William M Hardam

Kerin S Benack

Graciela Beatriz Blanchet-Fincher

Torence J Trout

Lyla M El-Sayed

Mark Leaman Armstrong

Wilfried G Holtje

George H Senkler

A method is disclosed for replicating (copying) a master hologram into a photosensitive layer to produce a copy of the hologram in a manner such that the copy of the hologram is an accurate and true replication of the master hologram with minimum interface-related defects. A holographic element containing a master hologram for use in contact copying is also disclosed.

Method and element for holographic replication

A method for electrostatically producing prepress printing proofs that accurately predict results of actual press runs for a given press having known or desired characteristic response.

Method for duplicating press characteristic dot gain in electrostatic

A transfer device and method of its use for an electrostatic imaging system using liquid toner capable of generating images having very high resolution at fast speeds. The station includes three sections, an electrically biased tack down roller, a transfer corona station and a transfer medium separator. These sections are located to prevent the onset of turbulence in the liquid toner.

Method and apparatus for high resolution liquid toner electrostatic

To protect photographic films from imaging by static discharges during manufacturing and customer use, copolymers of sulfonated monomers and primary amine monomers are coated on a film base and crosslinked with an aldehyde such as glutaraldehyde, or other colloid hardener giving a water-resistant, permanent, conductive (i.e., antistatic) layer.

Photographic element with antistatic polymers

Improved liquid electrostatic developer containing electrostatic toner particles is prepared by a process wherein an aqueous, e.g., water-wet pigment cake is flushed with a water insoluble vehicle, water is removed, and the developer is formed from the flushed pigment dispersion, thermoplastic resin, dispersant nonpolar liquid having a Kauri-butanol value of less than 30, in a vessel at elevated temperature under high shear, and the dispersion is cooled. The liquid electrostatic developer is useful in copying, making proofs including digital color proofs, lithographic printing plates, and resists.

Process for preparation of liquid electrostatic developer

Electrostatic liquid developer consisting essentially of

Polybutylene succinimide as adjuvant for electrostatic liquid developer

Process for preparation of toner particles for electrostatic imaging comprising

Process for preparation of color liquid toner for electrostatic imaging

To protect photographic films from imaging by static discharges during manufacturing and customer use, copolymers of sulfonated monomers and primary amine monomers are coated on a film base and crosslinked with an aldehyde such as glutaraldehyde, giving a water-resistant, permanent, conductive (i.e., antistatic) layer.

Crosslinkable antistatic polymers and their manufacture

A solid solution of a quinacridonequinone with a stabilizer selected from the group consisting of 2-anilinoacridone, 5,6,7,8-tetrahydro-2-anilinoacridone, 6-anilinoquinolone and 2-aminoacridone of improved lightfastness is provided which displays improved dispersibility while still maintaining a high degree of transparency in automotive finishes when post-treated with a surfactant.

Light stable quinacridonequinone yellow pigment

A process for preparing cyclohexanonecarboxylate ester intermediates for the preparation of 1,2,3,4-tetrahydro-7-(phenyl)amino-9(10H)acridinone and 2-(phenyl)amino-9(10H)acridinone and for preparing said acridinones.

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Hockessin, DE, United States of America

Arthur J Taggi