Eastman-kodak Company

Carestream Health, Inc.

Wojciech K Slusarek

Xiqiang K Yang

David Howard Levy

James Henry Reynolds

Jerrold N Poslusny

Mark Edward Irving

David T Southby

Jared B Mooberry

Lyn Marie Irving

Daniel L Kapp

James J Seifert

Zbyslaw R Owczarczyk

Leif P Olson

Cataldo A Maggiulli

Louise O Sandefur

Burton D Wilson

Richard P Szajewski

Philip T Lau

Liang-Sheng Liao

Louis Elbert Friedrich

John M Buchanan

Michele L Ricks

Teh-Hsuan Chen

Zheng Zhi Wu

Dustin L Comfort

Tukaram K Hatwar

William J Begley

Lawrence G Anderson

Ramanuj Goswami

Ralph H Young

David A Steele

Robert W Kulpinski

Gregory J Lestina

Kenneth N Kilminster

Zheng Zi Wu

Linda B Nothhard

David K Southby

An OLED includes an anode, a light-emitting layer disposed over the anode, and a first electron-injecting layer disposed over the light-emitting layer, wherein the first electron-injecting layer includes at least one organic host material having a reduction potential less than &#x2212;1.0 V vs. a Saturated Calomel Electrode and at least one dopant material capable of reducing the organic host material. The OLED also includes a second electron-injecting layer disposed in contact with the first electron-injecting layer, wherein the second electron-injecting layer includes at least one organic material having a reduction potential greater than &#x2212;1.0 V vs. a Saturated Calomel Electrode, and a cathode disposed over the second electron-injecting layer.

OLED electron-injecting layer

A tandem OLED includes an anode and a cathode. The OLED also includes at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer. An intermediate connector is disposed between adjacent electroluminescent units, wherein the intermediate connector includes an n-doped organic layer and an electron-accepting layer, the electron-accepting layer being disposed closer to the cathode than the n-doped organic layer, and wherein the electron-accepting layer includes one or more organic materials, each having a reduction potential greater than &#x2212;0.5 V vs. a Saturated Calomel Electrode, and wherein the one or more organic materials constitute more than 50% by volume of the electron-accepting layer.

Tandem OLED having an organic intermediate connector

This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.

Imaging element containing a blocked photographically useful compound

This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein:

Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal base precursors, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents or promoting for photothermographic use are disclosed. Compositions employing these thermal base precursors are suitable for use in acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in photothermographic elements.

Thermal base precursors

The present invention is directed to a method of scanning silver-halide-containing color photographic and photothermographic film. In particular, the present invention comprises a photographic element comprising at least one infrared imaging dye-forming agent in a blue-sensitive color layer of the element, thereby forming at least one image record in the infrared region of the imagewise exposed and developed element. This expedient leads to the formation of high quality images when scanning photographic elements in which the silver halide, metallic silver, and/or any organic silver salts have not been removed.

Color photographic element comprising a infrared dye-forming system in a blue image record

The present invention is directed to a photothermographic element comprising at least one imaging layer with a pyrrolotriazole coupler and a developing agent, or precursor thereof, the combination of which is capable of forming an image record in the infrared region of the light spectrum in response to a selected hue of visible light. This expedient leads to the formation of high quality images, especially when scanning photothermographic elements in which the silver halide, metallic silver, and/or any organic silver salts have not been removed. Also disclosed is a method for photothermographically forming a developed image comprising an infrared image record.

Color photothermographic element comprising a dye-forming system for forming a novel infrared dye

Imaging element containing a blocked photographically useful compound activated by azolesulfonyl-assisted 1,2-elimination

Color photothermographic elements comprising blocked developing agents

A light-sensitive silver-halide color photothermographic element comprises a typically magenta dye-forming pyrazolone coupler in the cyan record by rendering the hue of the resultant dye a cyan hue. The use of certain para-phenylenediamine developers, for example, containing a substituent group in both the 2- and 6-positions (ortho, ortho') relative to the coupling nitrogen, along with selected magenta dye-forming couplers, when oxidized, yield cyan dyes with certain couplers, resulting in the superior non-hue characteristics of magenta couplers in the cyan layer. By means of the present invention, light sensitive color photothermographic elements can form image dye records of consistent density forming ability and consistent stability in all three color records. Also disclosed is a method of processing such a color photographic element.

Color photothermographic element comprising a dye-forming system for forming a novel cyan dye

Scannable photographic element containing high extinction high-dye-yield cyan couplers

Growing community of inventors

Rochester, NY, United States of America

Wojciech K Slusarek