Patents Represented by Attorney, Agent or Law Firm Paul A. Leipold
  • Photographic clear display materials with biaxially oriented polyolefin sheet
    Patent number: 6063552
    Abstract: The invention relates to a photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 90% and a reflection density less than 10%.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: May 16, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Alphonse D. Camp, Peter T. Aylward
  • Compact thermal film apparatus with magnetic sensing device
    Patent number: 6048110
    Abstract: The invention relates to an apparatus for thermal development comprising a receiving chamber for a thrust cartridge, drive means to advance thermal film from said thrust cartridge and rewind film into said thrust cartridge, a magnetic reader and writer to read and write magnetic information onto the film, an accumulator to gather said film after it has left the cartridge, a heater located between said chamber and said accumulator to develop said thermal film as it passes between said cartridge and said accumulator, and a lighttight container for said chamber, heater, and accumulator.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: April 11, 2000
    Assignee: Eastman Kodak Company
    Inventors: Richard P. Szajewski, David H. Levy, Lyn M. Irving, Timothy W. Stoebe
  • Digital transmission display materials with voided polyester
    Patent number: 6048606
    Abstract: A imaging member comprising a polymer sheet comprising at least one layer of voided polyester polymer and at least one layer comprising nonvoided polyester polymer, wherein the imaging member has a percent transmission of between 40 and 60%, the imaging member further comprises tints, and the nonvoided layer is at least twice as thick as the voided layer.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 11, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Alphonse D. Camp, Thomas M. Laney, Peter T. Aylward
  • Photographic member with peelable and repositioning adhesive layer
    Patent number: 6045965
    Abstract: The invention relates to a photographic element comprising at least one silver halide imaging layer, at least one biaxially oriented polyolefin sheet, and at least one layer comprising a peelable adhesive wherein said peelable adhesive will allow peelable separation of said photographic element at said adhesive layer and the repositioning of at least one of the separated parts of said photographic element by use of said at least one layer comprising a peelable adhesive.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: April 4, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert F. Cournoyer, Robert P. Bourdelais, Peter T. Aylward
  • Continuous method of removing impurities from crude silver nitrate
    Patent number: 6042800
    Abstract: Herein is disclosed a continuous process for manufacturing purified silver nitrate solutions comprising the steps of:a) transferring a crude silver nitrate solution, together with a slurry comprising silver oxide, to a multistage agitated reactor, thereby forming a mixture;b) maintaining a continuous weight percent undissolved solids inside the reactor such that silver oxide is 10 to 80 weight percent of said undissolved solids;c) transporting the first mixture through the reactor over a period of 15 minutes to 3 hours to form a reaction product; andd) filtering the reaction products through a continuous filter to form a silver nitrate filtrate.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: March 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Brian Leigh Simpson, Gary Michael Distefano, Kevin Michael Logsdon, Stephen Michael Popham, Donald Charles Reid
  • Composite photographic material with laminated biaxially oriented polyolefin sheets
    Patent number: 6043009
    Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, and a layer of microvoided biaxially oriented polyolefin sheet between said paper base and said silver halide layer.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: March 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward
  • Sheets having a microvoided layer of strength sufficient to prevent bend cracking in an imaging member
    Patent number: 6040036
    Abstract: The invention relates to a photographic element comprising a paper base with a thickness from 0.025 mm to 0.25 mm, at least one photosensitive silver halide layer, and a layer of microvoided and biaxially oriented polyolefin sheet having a layer thickness of 0.020 mm to 0.050 mm, a density of between 78% and 100% of the solid polymer density located between said paper base and said at least one photosensitive silver halide layer, and wherein the entire photographic element is substantially free from surface distortion or cracking when the photographic element is forced to the shape of a diameter of no less than 8.0 mm.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: March 21, 2000
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula
  • Imaging element with biaxially oriented sheet with fluoropolymer
    Patent number: 6040124
    Abstract: The invention relates to an imaging element comprising a laminated base comprising a layer of biaxially oriented film sheet adhered to the top surface of a base wherein said biaxially oriented polyolefin contains a photographically compatible fluoropolymer processing aid.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: March 21, 2000
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Thaddeus S. Gula, Pang-Chia Lu
  • Preparation of silver chloride emulsions having iodide containing grains
    Patent number: 6033842
    Abstract: The invention relates to a method of forming a silver halide emulsion comprising adding triiodide during grain formation or sensitization.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: March 7, 2000
    Assignee: Eastman Kodak Company
    Inventors: Roger Lok, Benjamin T. Chen, Weimar W. White
  • Superior photographic elements including biaxially oriented polyolefin sheets
    Patent number: 6030742
    Abstract: The invention relates to a photographic element comprising at least one photosensitive silver halide layer comprising at least one dye forming coupler, a support comprising paper having laminated thereto a top and bottom sheet comprising biaxially oriented polyolefin sheets, wherein said photographic element has a surface roughness of between 0.15 and 0.50 mm and an average stiffness of between 150 and 300 millinewtons, a stiffness ratio between machine direction and cross direction of between 0.8 and 1.2 at between 20 and 70% humidity, a maximum curl value of 10 curl units, said photographic element has a back roughness of between 0.30 and 2.00 mm, and has a tear strength of between 300 and 900 N.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: February 29, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Thaddeus S. Gula, Peter T. Aylward, Sandra J. Dagan, John F. Sawyer, Geoffrey Mruk
  • Day/night photographic display material with biaxially oriented polyolefin sheet
    Patent number: 6030756
    Abstract: The invention relates to an photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: February 29, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Peter T. Aylward, Alphonse D. Camp, Michael R. Roberts
  • Composite photographic material with laminated biaxially oriented polyolefin sheets with improved optical performance
    Patent number: 6030759
    Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of microvoided polymer sheet between said paper base and said silver halide layer, and one or more other non-voided layers between said silver halide layer and said microvoided layer, and one or more other non-voided layers between said mirovoided layer and said paper base.The voided or non-voided layers have levels of TiO.sub.2 and colorants adjusted to provide optimum optical properties for control of MTF, LSTAR, and OPACITY.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: February 29, 2000
    Assignee: Eastman Kodak Company
    Inventors: Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock
  • Imaging element with biaxially oriented backside with improved surface
    Patent number: 6022677
    Abstract: The invention relates to a imaging element comprising a layer of biaxially oriented sheet adhered to the bottom surface of a base wherein said biaxially oriented sheet adhered to the bottom surface has a surface roughness average of between about 0.30 to 2.00 .mu.m.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: February 8, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward, Pang-Chia Lu
  • Reflective display material with biaxially oriented polyolefin sheet
    Patent number: 6020116
    Abstract: The invention relates to a photographic element comprising a transparent polymer base, at least one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said polymer base has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of less than 15%.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: February 1, 2000
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, Robert P. Bourdelais, Peter T. Aylward
  • One-time-use camera preloaded with color negative film element
    Patent number: 6021277
    Abstract: A one-time-use camera preloaded with a color negative silver halide photographic element is disclosed. The element is capable of producing images after imagewise exposure that, when developed, converted to electronic form, digitally corrected and then converted to a viewable form, exhibit excellent color, reduced granularity and improved sharpness. The photographic elements contain blue, green and red recording layer units capable of forming spectrally differentiated dye images. The layer units are substantially free of colored masking coupler, and each exhibit a dye image gamma of less than 1.5. The element exhibits an exposure latitude of at least 2.7 log E. The gamma ratios of the blue, green and red recording layer units are between 0.80 and 1.2.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: February 1, 2000
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, Richard P. Szajewski, Lois A. Buitano, John D. Buhr, Frank R. Brockler
  • Transmission duplitized display materials with biaxially oriented polyolefin sheets
    Patent number: 6017685
    Abstract: The invention relates to a photographic element comprising a transparent polymer sheet, a biaxially oriented polyolefin sheet laminated to said transparent polymer sheet, one image layer coated on the top of said biaxially oriented polyolefin sheet and one image layer coated on the bottom of said transparent polymer sheet wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 40% and a reflection density less than 60%.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: January 25, 2000
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Alphonse D. Camp, Peter T. Aylward
  • Translucent display paper with biaxially oriented polyolefin sheets
    Patent number: 6017686
    Abstract: The invention relates to an photographic element comprising a paper base, one layer of biaxially oriented polyolefin sheet and at least one image layer wherein said paper base sheet has a basis weight of between 40 and 120 g/m.sup.2, and said biaxially oriented polyolefin sheet has a spectral transmission of at least 40% and a reflection density less than 60%.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: January 25, 2000
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Alphonse D. Camp
  • Photographic element with indicia on oriented polymer back sheet
    Patent number: 6007665
    Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, and a layer of biaxially oriented polymer sheet adhered to the back side of the said paper base opposite to the side where said at least one said silver halide photosensitive layer is located, wherein said polymer sheet is provided with indicia on the surface of said sheet between said base paper and said polymer sheet.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: December 28, 1999
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward
  • Controlling bending stiffness in photographic paper
    Patent number: 6004732
    Abstract: The invention relates to a method of providing a photographic imaging element having a bending stiffness between 150 and 250 millinewtons and a caliper thickness between about 0.18 mm and about 0.28 mm, comprising providing a laminated base sheet comprising a paper sheet having a Young's modulus of between about 13800 MPa to 2760 MPa in the machine direction and a Young's modulus of 6900 MPa to 1380 MPa in the cross direction, and having a biaxially oriented sheet on each side of said paper sheet having a Young's modulus of 690 MPa to 5520 MPa in the machine direction and a Young's modulus of 690 MPa to 5520 MPa in the cross machine direction and coating said laminated base sheet with photosensitive layers.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: December 21, 1999
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock, Thaddeus S. Gula
  • Imaging element with thin biaxially oriented color layer
    Patent number: 6001547
    Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a layer of polymer sheet between said paper base and said silver halide layer, incorporating a thin tinted polymer layer directly below said silver halide layer.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: December 14, 1999
    Assignee: Eastman Kodak Company
    Inventors: Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais, Douglas N. Haydock