Eastman-kodak Company

Other

Barbara J Fisher

Philip S Bryan

Joseph F Bringley

Luther C Roberts

George Spector

Wayne A Bowman

Richard L Daubendiek

Jon N Eikenberry

Timothy R Gersey

Joseph G Lighthouse

Paul Matthew Hoderlein

Douglas L Oehlbeck

Andrea M Hyde

Kyle E Smith

A process of preparing a high bromide tabular grain emulsion comprising a dispersion medium and silver halide grains including tabular grains having &lcub;111&rcub; major faces and an aspect ratio of at least 2, which contain greater than 50 mole percent bromide, based on silver, and which account for greater than 50 percent of total grain projected area, where such tabular grains have an average aspect ratio of at least 5, the process comprising (i) in a grain nucleation step creating in a dispersing medium tabular silver halide grain nuclei containing parallel twin planes and (ii) in a grain growth step subsequently growing the tabular grain nuclei into tabular grains in a silver halide reaction vessel by adding a silver ion source and a halide ion source to the reaction vessel and precipitating silver halide onto the tabular grain nuclei, wherein thiocyanate ion is introduced into the silver halide reaction vessel prior to the addition of at least the final 10 mole percent of the total silver added to the reaction vessel, and further wherein the introduced thiocyanate ion concentration is at most 0.4 mole %, based on the total silver added to the reaction vessel. Use of thiocyanate during grain precipitation result in increased aspect ratio without degrading morphological purity.

Method for making tabular grain silver halide emulsion

A radiographic phosphor panel having oxosulfur functionalized polymer reducing agents. The phosphor panel has a support and a luminescent layer overlaying the support. The luminescent layer includes phosphor crystals, and binder. The oxosulfur functionalized polymer reducing agent is present in a concentration sufficient to substantially increase the photostimulated luminescence of the panel.

Radiographic phosphor panel having oxosulfur functionalized polymer

A stabilized storage phosphor is disclosed intended to be exposed to X-radiation and subsequently stimulated to emit light is disclosed. The storage phosphor is the product of firing a combination of species characterized by the relationship:

Stabilized storage phosphors and radiographic screens

A radiographic phosphor panel having metal hydride stabilizer compound. The phosphor panel has a support and a luminescent layer overlaying the support. The luminescent layer includes phosphor crystals, and binder. The oxosulfur reducing agent can be added to the luminescent layer. The oxosulfur reducing agent has a concentration sufficient to substantially increase the photostimulated luminescence of the panel.

Radiographic phosphor panel having metal hydride stabilizing compound

A radiographic phosphor panel having binder compatible oxosulfur stabilizer and a preparation method. The phosphor panel has a support and a luminescent layer overlaying the support. The luminescent layer includes phosphor crystals, binder and an oxosulfur reducing agent. The oxosulfur reducing agent is dispersed within the luminescent layer on a substantially molecular basis. The oxosulfur reducing agent is a reducing agent for iodine. The oxosulfur reducing agent has a concentration sufficient to substantially increase the photostimulated luminescence of the panel.

Radiographic phosphor panel having binder compatible oxosulfur

A phosphor composition which comprises oxygen and a combination of elements satisfying the relationship:

Hafnium stannate phosphor composition and X-ray intensifying screen

An improved warming container which may comprise either a cup, pot, bowl or the like, and which includes an electric heating element built into its bottom and side walls, the heating element being connected to a rechargeable battery, thermostat and switch located on its underside and which are completely enclosed so to allow the vessel being fully submerged during washing without damage to the electric system.

Growing community of inventors

Rochester, NY, United States of America

Barbara J Fisher