Patents Assigned to Eastman Kodak
  • Organosolv lignin-modified phenolic resins and method for their preparation
    Patent number: 5010156
    Abstract: A lignin-modified phenol-formaldehyde resin for use as an adhesive for particulate wood products is disclosed which is prepared by reacting phenol and formaldehyde with an aqueous alkaline solution of an organosolv lignin. The organosolv lignin used in the formation of the resin is obtained from a pulping liquor prepared from particulate wood material from hardwood trees, aqueous polar organic solvent, and an acid catalyst. The resin allows for replacement of phenol or organosolv lignin at a level of up to 40% without detrimentally affecting its performance in terms of bonding strength or durability. The resin of the present invention is also superior to prior art lignin-modified resins in that it is low in sulfate, ash and sulfur residues, and thus will not give off distracting or harmful sulfur odors during resin preparation or hot-pressing of the adhesive and is unaffected and not solubilized by water.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: April 23, 1991
    Assignee: Eastman Kodak Company
    Inventors: Phillip M. Cook, Steven L. Hess
  • Doubly correlated sample and hold circuit
    Patent number: 5010408
    Abstract: Video processing circuitry, which cancels noise and distortions from an imaging system which has a charge coupled device, has three sample and hold circuits and a pair of source followers which are on a common semiconductor substrate and further has a differential amplifier which is not on the common substrate.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: April 23, 1991
    Assignee: Eastman Kodak Company
    Inventor: William J. Toohey
  • Clamping apparatus for thermal transfer printer
    Patent number: 5009509
    Abstract: Apparatus for clamping receiver sheets to the print drum of a thermal transfer printer. The apparatus includes a clamp assembly mounted for radial movement and having a clamp strip extending over the drum periphery and an interior longitudinal body coupled to that strip at a plurality of axially spaced locations. A longitudinal lever member extends axially within the drum from a pivot point at one drum end to an actuation arm at the other drum end and has a pivot arm coupled to a central portion of the clamp body. Springs urge the clamp assembly radially inwardly and an actuator mounted on the other drum end selectively moves the lever member radially outwardly.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: April 23, 1991
    Assignee: Eastman Kodak Company
    Inventors: Robert J. Matoushek, Terrence L. Fisher, James A. Whritenor
  • Method and apparatus for driving a DC motor
    Patent number: 5010282
    Abstract: A high efficiency remote current sensing motor drive circuit is disclosed, wherein the use of a sense resistor to sense motor current is eliminated to improve the overall efficiency of the motor drive circuit. The disclosed motor drive circuit is based on the principle that the drain-to-source voltage of a power FET in a motor phase driver can be detected and used to generate a feedback current that is proportional to the detected drain-to-source voltage and inversely proportional to a drain-to-source resistance of a reference FET that is much smaller than the power FET.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: April 23, 1991
    Assignee: Eastman Kodak Company
    Inventor: Gregory O. Moberg
  • Multi-layer printed circuit board and a method for assuring assembly in a selected order
    Patent number: 5010449
    Abstract: A method for assuring that a multi-layer circuit board has been assembled in a selected order which method incorporates the step of forming a label on each layer of the multi-layer circuit board, with each of the labels having a unique indicia thereon indicative of that layers position in a correctly assembled multi-layer circuit board. Additionally, there is provided the step of forming a transparent area in each layer above the last layer to be viewed, with the size of each transparent area limited to that necessary to view only the indicia of the following correctly assembled layers, such that an incorrectly ordered layer prevents the viewing of at least one indicia. A replication of the labels, commencing from the last ordered layer to the first ordered layer, provides for a doubling in the number of layers that can be checked for correct assembly order.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: April 23, 1991
    Assignee: Eastman Kodak Company
    Inventor: Robert L. Baldino
  • Adjustable clock generator circuit
    Patent number: 5008563
    Abstract: A clock generator for producing a pulse that can be adjusted in width and position. The positive edge of an incoming clock signal is slowed by an adjustable rise time inverter with a selected bias voltage until a selected threshold voltage level is met by a Schmitt trigger. The output from the Schmitt trigger is directed through a similar delay circuit to establish the pulse width of the pulse.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Timothy J. Kenney, Lionel J. D'Luna
  • Digital image interpolator with multiple interpolation algorithms
    Patent number: 5008752
    Abstract: An interpolator for enlarging or reducing a digital image includes an interpolation coefficient memory containing interpolation coefficients representing several different one dimensional interpolation kernels. A row interpolator receives image pixel values, retrieves interpolation coefficients from the memory, and produces interpolated pixel values by interpolating in a row direction. A column interpolator receives multiple rows of interpolated pixel values from the row interpolator, retrieves interpolation coefficients from the memory, and produces rows of interpolated pixel values by interpolating in a column direction. A logic and control unit monitors the content of the input data and switches between interpolation kernels to provide optimum interpolation for each type of content.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventor: Lance Van Nostrand
  • Treatment of domestic and industrial waste waters
    Patent number: 5008020
    Abstract: Waste waters are treated by mixing with a metal bicarbonate and a metal carbonate in amounts sufficient to affect solidification.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Robert G. Surash, Gary G. Kiehl
  • Image recording system and method
    Patent number: 5008697
    Abstract: A system for simultaneous recording of a flash image on photographic film and video cameras in which flash operation during the process of image transfer out of an image sensor in the video camera is avoided by means of a simple synchronizing circuit. The synchronizing circuit operates in response to a flash request signal from the film camera to interrupt the transfer of image information out of the image sensor in the video camera for at least the duration of the flash illumination on the subject. Following conclusion of the flash illumination, the synchronizing circuit resets the image sensor processing circuits to restart transfer of the image information out of the image sensor at the beginning of an image field. The restart can coincide with conclusion of the flash illumination or can be delayed to coincide with a desired video frame in the composite video signal.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventor: Stephen A. Noble
  • Quantitative imaging employing scanning equalization radiography
    Patent number: 5008914
    Abstract: In a scanning equalization radiography system, a control function similar to the exposure response function of the image sensor is employed, whereby the response of the sensor will be linearly related to the x-ray attenuation of an object being radiographed thereby enabling quantitative measurements to be made directly from the radiograph.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventor: William E. Moore
  • Method for recovering metals from waste liquors
    Patent number: 5008017
    Abstract: Waste liquors containing small amounts of silver salts are treated with aluminum hydroxide to produce a floc reduced in volume by the addition of an acid and mixed with a metal bicarbonate and metal carbonate in amounts sufficient to affect solidification.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Gary G. Kiehl, Robert G. Surash
  • Increased activity precipitated photographic materials
    Patent number: 5008179
    Abstract: The invention is accomplished by providing an aqueous dispersion of a photographic coupler by precipitation from a solvent solution by solvent and/or pH shift. A second aqueous dispersion of an activating permanent solvent for the photographic coupler is also provided. The dispersion of activating permanent solvent and photographic coupler are combined to form a combined dispersion which is mixed with a gelatin dispersion of silver halide particles to form a photographic emulsion suitable for casting as a photographic element. In a preferred method of the invention, the activating solvent is incorporated into a dispersion of latex particles prior to being combined with the dispersion of photographic coupler.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Krishnan Chari, Wayne A. Bowman, Brian Thomas
  • Corona charger apparatus of simplified construction
    Patent number: 5008538
    Abstract: A universally adaptable corona charger apparatus of simplified construction which is replaceable by an unskilled operator and is inexpensive so that discarding the apparatus when it is no longer useful is cost justified. The corona charger apparatus comprises a conductive corona wire, a generally U-shaped conductive shield, a generally U-shaped non-conductive housing, and a pair of non-conductive end caps. The housing is formed with integral features which retain and accurately space the shield within the housing, locate and properly tension the corona wire, locate and support a grid if required, support electrical terminals for the corona wire and grid, retain and locate the end caps, and enable the assembled apparatus to be accurately located by an unskilled operator. By use of the integral features, the corona charger apparatus is substantially simpified with a concomitant reduction in its cost.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Michael L. DeCecca, Michael S. Kowalczyk, Thomas W. Gray, Paul W. Partridge
  • Preparation of polysulfones
    Patent number: 5008369
    Abstract: In a preferred embodiment, poly(4-phenylsulfone) is prepared by self-condensation of sodium 4-fluorophenyl sulfinate. The process is initiated by a small quantity of 4,4'-difluorophenylsulfone. The process is conducted in the presence of a dipolar, aprotic solvent such as dimethylsulfoxide. The reaction is conducted at a mildly elevated temperature, preferably within the range of from about 100.degree. C. to about 200.degree. C.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Douglas R. Robello, Abraham Ulman
  • Aqueous additive systems, methods and polymeric particles
    Patent number: 5007961
    Abstract: Aqueous application systems for applying additives to polymeric particles, methods of preparing aqueous emulsions which include at least one processing, stabilizing or other functional polymer additive and an emulsifiable wax. Also disclosed are methods of applying additives to polymeric particles and to polymeric particles treated by such methods.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Kenneth W. Hyche, William C. Gose
  • Optical article exhibiting a high level of second order polarization susceptibility
    Patent number: 5008043
    Abstract: An optical article is disclosed containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10.sup.-9 electrostatic units comprised of polar aligned noncentrosymmetric molecular dipoles. The molecular dipoles have a hydrophobic electron donor moiety linked through a conjugated .pi. bonding system to an electron acceptor sulfonyl moiety. The electron acceptor sulfonyl moiety includes at least two halogen substitutents of its .alpha. carbon atom.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Douglas R. Robello, Abraham Ulman, Edward J. Urankar, Craig S. Willand
  • Battery-containing apparatus
    Patent number: 5007859
    Abstract: A contact carrier is pivotally coupled to a body portion that defines a chamber for receiving a power source battery, to support a door for pivotal movement with the contact carrier between a closed position covering the chamber and an open position uncovering the chamber. The contact carrier includes an electrically conductive contact for making electrical connection with a corresponding contact of the battery and to bias the battery into the chamber, when the door is closed. The door and the contact carrier are translationally coupled to permit the door to be translated relative to the contact carrier in the closed position to latch the door. Thus, since the contact carrier remains stationary during latching movement of the door, the electrical connection between the two contacts will not be disturbed.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Jude A. Sangregory, Anthony DiRisio
  • Titanium activated hafnia and/or zirconia host phosphor containing neodymium
    Patent number: 5008034
    Abstract: An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing neodymium ions to reduce afterglow. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Philip S. Bryan, Patrick M. Lambert, Christine M. Towers, Gregory S. Jarrold
  • Device for aligning and mounting a copier or printer subsystem
    Patent number: 5007760
    Abstract: An apparatus for first aligning by trial and error, and then mounting or fastening a subsystem of an electrostatographic copier or printer such that the subsystem thereafter can be removed, serviced, and then remounted or reinstalled in precise alignment without further need of such initial trial and error aligning thereof. The apparatus include an aligning device for initially aligning by marking an aligned position through a first alignment and screw mounting aperture in the mounting portion of the subsystem, and for forming a laterally sealed cavity with such mounting portion. The device has front and back sides, a screw or bolt mounting apertures therethrough, a backside recess, and adhesive introduction perforations therein.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventors: Charles E. Mullen, Arthur H. Crater
  • Phase separation container with fixed means preventing remixing
    Patent number: 5007892
    Abstract: There is described a container for phase separation of at least two phases via centrifugation. Means are provided to prevent remixing, such means comprising porous mechanical means such as surfaces fixed in place and inclined at an angle to resist flow of the heavier phase upon removal of the lighter phase, such that remixing of the phases is prevented.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: April 16, 1991
    Assignee: Eastman Kodak Company
    Inventor: Richard L. Columbus