E.i. Dupont De Nemours and Company

Dximaging

Torence J Trout

James R Larson

Lyla M El-Sayed

Dominic M Chan

William K Smothers

Robert D Mitchell

William John Gambogi, Jr

Kathryn A Pearlstine

Daniel J Mickish

Bruce M Monroe

Arthur J Taggi

Dalen E Keys

William A Houle

Sanford M Marcus

Paul James Martin

Chandrakant B Thanawalla

Mark Leaman Armstrong

Andrew M Weber

Steven R Mackara

Steven P Schmidt

Steven Robert Mackara

Krishna C Doraiswamy

El-Sayed Lyla M

A reflective liquid crystal display contains, a holographic reflector that provides either a white or more neutral background color to the display when viewed with ambient white light. The holographic reflector comprises a holographic recording film layer that includes at least first and second pixel volumes containing holographic mirrors and, preferably, third pixel volumes containing holographic mirrors.

Holographic reflector for liquid crystal display

The present invention relates to holographic multicolor optical elements for use as multicolor filters in liquid crystal displays and methods of making the elements. The elements can be used as multicolor reflective or transmission filters The elements can have one, two, three or more holographic recording film layers Each layer comprises at least first and second pixel volumes containing holographic mirrors and preferably third pixel volumes containing a holographic mirror.

Holographic Multicolor optical elements for use in liquid crystal

This invention relates to a process for forming a reflection hologram. A process for forming a volume reflection hologram is provided wherein the formation of secondary holograms is suppressed by the placement of index matched filters contiguous to at least one surface of the photosensitive recording element during formation of the hologram.

Holographic imaging using filters

A positive charged electrostatic liquid developer consisting essentially of

Mineral acids as charge adjuvants for positive liquid electrostatic

In accordance with this invention there is provided a process for the preparation of pigmented ink jet inks comprising:

Process for making pigmented ink jet inks

A liquid electrostatic developer consisting essentially of

Aromatic nitrogen-containing compounds as adjuvants for electrostatic

Bipolar liquid electrostatic developer consisting essentially of at least one charge director in a nonpolar liquid having dispersed therein two toner particles having opposite charge polarity which comprise at least one thermoplastic copolymer resin. The particle average by area size is less than 10 .mu.m. The ratio of the two toner particles is 5 to 95 and 95 to 5. A process of simultaneous transfer of such developer is included. The developer is useful in copying.

Bipolar liquid electrostatic developer

Negative-working electrostatic liquid developer consisting essentially of

Metal alkoxide modified resins for negative-working electrostatic liquid

Holographic notch filters are provided that comprise photopolymer films, having an optical density of at least 2, mounted on a transparent substrate.

Holographic notch filters

Holographic photopolymer compositions having fluorinated binders are provided that produce excellent reflection holograms when holographically imaged.

Holographic photopolymer compositions and elements for refractive index

Wavelength response of volume holograms is altered by contact with a dry film diffusion element.

Dry film process for altering wavelength response of holograms

Electrostatic liquid developer having improved negative charging characteristics consisting essentially of

Monofunctional amines as adjuvant for liquid electrostatic developers

Positive electrostatic liquid developer consisting essentially of

Organic sulfur-containing compounds as adjuvants for positive

A positive, liquid electrostatic developer consisting essentially of

Phosphorous-containing compounds as adjuvant for positive electrostatic

Electrostatic liquid developer consisting essentially of

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Yorklyn, DE, United States of America

Torence J Trout