Eastman-kodak Company

Carestream Health, Inc.

Other

David W Gruszczynski

Seshadri Jagannathan

Charles M Rankin

Kevin L Bishop

Timothy John Tredwell

Dennis E Smith

Jean-Marc Inglese

Brian Patrick Aylward

Daniel M Leusch

Mark S Fornalik

Sinh-Luh Yuan

Christopher J Puccini

Svetlana Reznik

Bradley Stephen Jadrich

Russell J Palum

Eric L Dillenbeck

Richard A Lombardo

Andrew D Thompson

Richard A Bierma

Sarah R Welch

Douglas E Margevich

Described is a scintillator screen including a plurality of filaments. Each of the plurality of filaments includes scintillating particles dispersed within a thermoplastic polymer. The thermoplastic polymer includes an elastic additive. The scintillating particles are from about 10 volume percent to about 60 volume percent of each of the plurality of filaments. Each of the plurality of filaments has a refractive index of greater than or equal to 1.5. The plurality of filaments are substantially parallel to each other and are at a volume packing of from about 60 percent to about 90 percent.

Digital radiography detector

Described is a scintillator screen that includes a supporting layer having a phosphor dispersed in a polymeric binder disposed on the supporting layer and a barrier layer disposed on the polymeric binder. The barrier layer includes a non-moisture absorbing polymer selected from the group consisting of polyethylene terephthalate, cellulose diacetate, ethylene vinyl acetate and polyvinyl butyraldehyde. The barrier layer has a thickness of less than 1 micron. An antistatic layer is disposed on the barrier layer. The antistatic layer includes poly(3,4-ethylenedixythiophene)-poly(styrene sulfonate) (PEDOT/PSS) dispersed in a polymer selected from the group consisting of a polyester and a polyurethane. The antistatic layer has a transparency of greater than 95 percent at a wavelength of from about 400 nm to 600 nm.

Coatings for digital detectors

There is described a digital radiography panel that includes a scintillator screen, an adhesive layer and a flat panel detector. The scintillator screen includes a supporting layer; a phosphor dispersed in a polymeric binder disposed on the supporting layer and an antistatic layer disposed on the polymeric binder, wherein the antistatic layer has a transparency of greater than 95 percent at a wavelength of from about 400 nm to 600 nm and a surface resistivity of less than 10ohms per square. The adhesive layer is disposed on the scintillator screen and includes a material selected from the group consisting of acrylic polymers and urethane polymers. The adhesive layer has a thickness of from about 5 &#x3bc;m to about 15 &#x3bc;m. The adhesive layer has a transmittance of greater than 95 percent at a wavelength of from about 400 nm to 600 nm. The flat panel detector is disposed on the adhesive layer.

Adhesive layer for digital detectors

There is described a method of manufacturing a digital radiography panel. The method includes providing a scintillator screen and spray coating an acrylic adhesive composition on the scintillator screen. A flat panel detector and the scintillator screen with acrylic adhesive composition are compressed together at a force of about 5 psi to about 15 psi, at an atmospheric pressure of about 0.3 Torr to about 100.0 Torr for a time sufficient to affix the flat panel detector to the scintillator screen to form the digital radiography panel.

Method of manufacturing digital detectors

A patterned scintillator panel including an extruded scintillator layer comprising a thermoplastic polyolefin and a scintillator material, wherein the scintillator layer comprises a pattern. Also disclosed is a method of making a patterned scintillator panel including forming a scintillator layer by melt extrusion, the scintillator layer comprising thermoplastic particles comprising a thermoplastic polyolefin and a scintillator material; and patterning the scintillator layer. Further disclosed is a method of making a patterned scintillator panel including forming a scintillator layer by injection molding, the scintillator layer comprising thermoplastic particles comprising a thermoplastic polyolefin and a scintillator material; and patterning the scintillator layer.

Patterned radiation-sensing thermoplastic composite panels

This invention relates generally to methods for removing adherent materials, for example, paint, flashes, burrs, photoresists, contaminants, and other materials from various external surfaces. In particular, the method employs an improved media comprising core/shell particles. The media can be propelled against or along the surface by a gaseous or liquid carrier medium or a mixture of gas and liquid to remove the unwanted surface material. In one embodiment, suitable blasting equipment propels the media, via a pressurized air stream, against a surface of an object, for example an airplane skin, to dislodge the material to be removed.

Method of removing material from an external surface using core/shell particles

This invention relates generally to methods for removing adherent materials, for example, residues, scale, contaminants, fouling, precipitates, and the like objectional materials from various internal surfaces of fluid transport or delivery systems and parts thereof. In particular, the method employs an improved media comprising core/shell particles. The media can be propelled against or along the surface by a fluid carrier to remove the unwanted surface material. In one embodiment, the media may be propelled by a liquid along a surface, such as the interior walls of a pipe, to remove undesirable adherent materials.

Method of removing material from an interior surface using core/shell particles

A method is taught for cleaning photographic chemistry product fouling, including a proteinaceous portion and a non-proteinaceous portion from a liquid delivery system. The method comprises the steps of displacing resident product solution in the piping with water, hydrodynamically cleaning the piping system using two-phase flow a first time, chemically cleaning the piping system with an aqueous bleach solution to remove the proteinaceous portion of the photographic chemistry product fouling, chemically cleaning the piping system with a functionalized ethyl acetate solvent to remove the non-proteinaceous portion of the photographic chemistry product fouling, and hydrodynamically cleaning the piping system using two-phase flow a second time after the chemical cleaning steps to remove remaining residue. Preferably, after the second hydrodynamic two-phase flow cleaning step, the delivery system is subjected to a high purity water rinse.

Clean-in-place method for cleaning solution delivery systemes/lines

A method for hydrodynamic cleaning of a piping system using two-phase flow. A model for predicting peak wall shear stress for two-phase flow is used to determine an optimum flow rate ratio which achieves a maximum wall shear stress in the particular piping system to be cleaned. The optimum flow rate is first established by turning on the liquid and gas flows through the piping system to be cleaned and allowing the flow to reach steady state conditions. The back pressure of the system is measured and the optimization model is used to determine the optimum flow rate ratio. Once the optimum flow rate ratio has been calculated, the liquid flow rate and the gas flow rates can be adjusted such that the optimum ratio is achieved. The two-phase back pressure is then measured to verify that the optimum flow rate ratio has been used. This is done by comparing the measured optimum two-phase flow back pressure with the initial two-phase back pressure used in the equations. If there is a variance between the two back pressures then the measured back pressure is substituted into the equations for the initial back pressure and the optimum flow rate ratio is recalculated. This step is repeated until the measured back pressure is equal to the back pressure used in the calculations. Cleaning is then performed at that optimum flow rate ratio.

Method for two-phase flow hydrodynamic cleaning for piping systems

A method and apparatus for measuring wall shear stress in pipe as a result of fluid flow therethrough employs a glass flow tube, magnetic particles of sufficiently small size such that the form drag force on the individual particles is orders of magnitude smaller than the viscous shear forces on the particle, and a magnet of known magnetic field strength. The glass flow tube with a known coefficient of friction allows visual inspection of particle release and further allows for the determination of the frictional forces on the particles. The magnetic particles are placed inside the tube with the magnet held in close proximity to the exterior wall of the tube. With the particles in place, fluid flow is initiated. The magnetic field strength at the surface of the flow tube is then reduced until the magnetic particles are hydrodynamically dislodged from the interior of the glass tube. Magnetic field strength may be reduced either by retracting the magnet away from the glass tube or by using an electromagnet and reducing current thereto. The position of the magnet, or the current to the electromagnet, at which the particles are dislodged is used to qualitatively determine the wall shear stress.

Method for measuring wall shear stress due to fluid flow in piping

A liquid flow distribution apparatus for forming highly uniform liquid layers on substrates without stagnation within a flow distribution cavity of the apparatus. A primary cavity has a primary inlet means and a plurality of secondary inlet conduits which terminate in angled secondary ports in the cavity wall. Each of the secondary ports is angled away from the primary inlet means. The apparatus can be used under varying rheological conditions.

Multiple inlet flow distributor for liquids

A flexible fiber optic illuminator 10 for inspecting an interior space, comprises a thin fiber optic element 12 composed of a plurality of optic fibers 20 arranged in at least one substantially planar layer having front and back sides 32,34. Thin stiffner members 24,26 are arranged adjacent to the optic fibers 20 to provide reinforcement. First and second layers 28,30 of adhesive material having adhering means on one side only, are fixedly adhered to the back and front sides of the planar layer 22. A protective jacket 36 for optic fibers 20 and stiffner members 24,26 is therefore defined by first and second adhesive layers 28,30. A light source 14 coupled to the fiber optic element 12 is provided for illuminating the optic fibers 20. In another embodiment of the invention, a method of inspecting an interior space is provided which comprises providing the fiber optic slot illuminator 10 of the invention and, inserting and positioning the illuminator 10 in the interior space for effective illumination of the interior space.

Flexible fiber optic illuminator and method

A liquid distribution device and method for distributing liquid uniformly is disclosed. A coating liquid is supplied to a distribution cavity from both sides of the cavity through a delivery line. The cavity is a slot which expands from the length at the liquid entrance of the cavity to a longer length at the cavity exit. The two streams of liquid impinge against each other inside the cavity and spread out along the contour of the cavity. This liquid distribution system eliminates recirculation regions and does not experience problems with variable residence time and distribution across the slot.

Growing community of inventors

Rochester, NY, United States of America

David W Gruszczynski