Patents by Inventor Lysle D. Cahill

Lysle D. Cahill has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4628367
    Abstract: An electrostatic image of binary data representing elements if formed on a particular electrophotographic member disclosed and claimed in U.S. Pat. No. 4,025,339. The electrostatic image is toned and the toned image is transferred to a storage medium. The storage medium is in the form of an extended length of dual-layer transparent synthetic resin material. One of the layers has a softening range of temperature less than the substrate. At the transfer, the one layer is heated and the toned image is pressed into the one layer. The storage medium carrying the toned image then is wound up on a storage or take-up spool while fresh medium is fed from a supply spool. The two spools are carried by a housing and the housing, spools and medium form an optical mass memory cassette. Reading of the data occurs by deflecting rays of light across the medium and the light that is transmitted through and blocked by the medium is sensed in bar sensors, one for each ray.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: December 9, 1986
    Assignee: Coulter Systems Corporation
    Inventors: Manfred Kuehnle, Lysle D. Cahill, John C. Butler, Lawrence J. Bassuk
  • Patent number: 4566042
    Abstract: A digital laser platemaker for imaging an electrophotographic member by electrostatic techniques using information which is derived from a source of binary data. The binary data may be achieved by scanning a pattern or may be synthesized electrically to represent that which it is desired to reproduce on the electrophotographic member. The binary data is applied to a pixel generator which is constructed and arranged to produce an output in the form of signals for driving an acousto-optical deflector that in turn deflects a laser beam to form a composite of rays. The composite of rays represent the columns of a pattern to be applied to each pixel which is generated, the rows of the pixel being represented by the output of a shaft encoder that is synchronized with the rotation of a cylinder carrying the electrophotographic member. The pixel generator produces hexagonal pixels and the pattern in each pixel represents density information derived from the binary data originally received by the pixel generator.
    Type: Grant
    Filed: August 3, 1984
    Date of Patent: January 21, 1986
    Assignee: Coulter Systems Corporation
    Inventor: Lysle D. Cahill
  • Patent number: 4515879
    Abstract: An electrostatic image of binary data representing elements is formed on a particular electrophotographic member disclosed and claimed in U.S. Pat. No. 4,025,339. The electrostatic image is toned and the toned image is transferred to a storage medium. The storage medium is in the form of an extended length of dual-layer transparent synthetic resin material. One of the layers has a softening range of temperature less than the substrate. At the transfer, the one layer is heated and the toned image is pressed into the one layer. The storage medium carrying the toned image then is wound up on a storage or take-up spool while fresh medium is fed from a supply spool. The two spools are carried by a housing and the housing, spools and medium form an optical mass memory cassette. Reading of the data occurs by deflecting rays of light across the medium and the light that is transmitted through and blocked by the medium is sensed in bar sensors, one for each ray.
    Type: Grant
    Filed: April 28, 1983
    Date of Patent: May 7, 1985
    Assignee: Coulter Systems Corporation
    Inventors: Manfred R. Kuehnle, Lysle D. Cahill, John C. Butler, Lawrence J. Bassuk
  • Patent number: 4504126
    Abstract: Graphics and text data are combined selectively to discharge incremental areas of a charged electrophotographic member to form thereon a latent text and/or graphics image represented by the graphics and text data, the imaged member thereafter being toned and output from the system so that the toned image may be fused on the member and the member may be used as a printing plate in an offset lithographic printing press. The apparatus includes an optical system that may form a maximum of 22 individual rays which are deflected twice through a field flattening lens and then onto the charged member. The optical system further includes an optical scale or grating which provides electrical signals indicating the precise location of the individual rays along scan lines on the member. The apparatus further includes an electronic system which generates electrical signals from the graphics and text data to form the 22 individual rays.
    Type: Grant
    Filed: October 4, 1983
    Date of Patent: March 12, 1985
    Assignee: Coulter Systems Corporation
    Inventors: E. Raymond Thomas, Lysle D. Cahill, John L. Tibbits, Kenneth D. Fraser, John F. Keane, Stanley C. Harting, George H. Kramer, Ronald J. Duke, Theodore A. Kessis, John C. Butler, Gary L. Frank, John A. Lawson
  • Patent number: 4493549
    Abstract: A digital plate maker system to receive graphics and text data and selectively discharge incremental areas of a charged electrophotographic member to form thereon the latent images represented by the graphics and text data, the imaged member thereafter being toned and output from the system. Thereafter, the toned image may be fused on the member and the member being used in an offset lithographic printing press. The digital platemaker system includes an optical system which may form a maximum of 22 individual rays which are direct deflected twice through a field flattening lens and then onto the charged member. The optical system further includes an optical scale or grating which provides electrical signals indicating the precise location of the individual rays along scan lines on the member. The digital plate maker system further includes an electronic system which generates electrical signals to form the 22 individual rays.
    Type: Grant
    Filed: October 4, 1983
    Date of Patent: January 15, 1985
    Assignee: Coulter Systems Corp.
    Inventors: E. Raymond Thomas, Lysle D. Cahill, John L. Tibbits, Kenneth D. Fraser, John F. Keane, Stanley C. Harting, George H. Kramer, Ronald J. Duke, Theodore A. Kessis, John C. Butler, Gary L. Frank, John A. Lawson
  • Patent number: 4468706
    Abstract: A digital laser platemaker for imaging an electrophotographic member by electrostatic techniques using information which is derived from a source of binary data. The binary data may be achieved by scanning a pattern or may be synthesized electrically to represent that which it is desired to reproduce on the electrophotographic member. The binary data is applied to a pixel generator which is constructed and arranged to produce an output in the form of signals for driving an acusto-optic deflector that in turn deflects a laser beam to form a composite of rays. The composite of rays represent the columns of a pattern to be applied to each pixel which is generated, the rows of the pixel being represented by the output of a shaft encoder that is synchronized with the rotation of a cylinder carrying the electrophotographic member. The pixel generator produces hexagonal pixels and the pattern in each pixel represents density information derived from the binary data originally received by the pixel generator.
    Type: Grant
    Filed: February 13, 1979
    Date of Patent: August 28, 1984
    Assignee: Coulter Systems Corporation
    Inventor: Lysle D. Cahill
  • Patent number: 4468707
    Abstract: Half-tone xerography involving high speed charging of a limited region of an electrophotographic member and subsequent high speed discharging as by writing with a fine laser beam upon the limited region of the electrophotographic member, the beam being modulated with recordable intelligence from stored digital data. The member is mounted for rotary and axial movement relative to both charging unit and an axial movement beam directing unit. The member support for the member holds the member in a cylindrical or partially cylindrical form with the photoconductive coating inside. The member as a unit and a charging device and writing device as a unit are mounted for relative axial and rotating movement at high speed to enable charging and imaging of the limited regions in a continuous progressive manner.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: August 28, 1984
    Assignee: Coulter Systems Corporation
    Inventors: Manfred R. Kuehnle, Lysle D. Cahill
  • Patent number: 4439789
    Abstract: An original image is reproduced on an electrophotographic member with a series of binary data bits having a statistically valid count corresponding to the relative density of the original image.A sensor senses the density value of individual information forming structure or structures in incremental areas of the original image and converts the density values into a series of binary data bits, one bit per incremental area. An imager receives the binary data bits and forms one binary element on the charged electrophotographic member surface in response to each bit. The elements formed on the member surface correspond in sense to the binary data bits from the sensor and the elements are formed in incremental areas of the member corresponding to the incremental areas of the original image from which their respective binary data bits were produced.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: March 27, 1984
    Assignee: Coulter Systems Corporation
    Inventor: Lysle D. Cahill
  • Patent number: 4428000
    Abstract: A latent electrostatic image is formed on an electrophotographic member having a crystalline, stable coating of wholly inorganic photoconductive material which is of the order of 0.2 to 2 microns thick. This is effected by moving a corona needle energized by a corona power source and a laser beam modulated from digital information together over the photoconductive coating in a progressive manner at high speed. The latent electrostatic image so formed is then developed.
    Type: Grant
    Filed: June 12, 1981
    Date of Patent: January 24, 1984
    Assignee: Coulter Systems Corporation
    Inventors: Manfred R. Kuehnle, Lysle D. Cahill
  • Patent number: 4427999
    Abstract: Half-tone xerography involving high speed charging of a limited region of an electrophotographic member and subsequent high speed discharging as by writing with a fine laser beam upon the limited region of the electrophotographic member, the beam being modulated with recordable intelligence from stored digital data. The member is mounted for rotary and axial movement relative to both charging unit and an axial movement beam directing unit. The member as a unit and a charging device and writing device as a unit are mounted for relative axial and rotating movement to enable charging and imaging of the limited regions in a continuous progressive manner.
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: January 24, 1984
    Assignee: Coulter Systems Corporation
    Inventors: Manfred R. Kuehnle, Lysle D. Cahill
  • Patent number: 4424589
    Abstract: A flat bed scanner system for optically sensing a transparent original image and producing three channels of binary digital data representing the densities of the original image. Each channel produces data in response to one sensing color and sensing of the original image occurs by directing a focused image of a beam of white light onto and across the original image in a pattern of parallel scan lines there being a plurality of sensing positions along each scan line, and producing the digital output data in response to the modulated beam of light transmitted by the original image. There is an optical system which provides for the directing of the beam of white light across the original image and which directs the modulated beam onto sensors. The optical system includes color correction and field flattening of the beam of white light and provides a cylinder condenser lens for the modulated beam of white light.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: January 3, 1984
    Assignee: Coulter Systems Corporation
    Inventors: E. Raymond Thomas, Lysle D. Cahill, William W. Marshall, Luke L. Talley, John A. Lawson, Brian N. Wilcox
  • Patent number: 4408868
    Abstract: Graphics and text data are combined selectively to discharge incremental areas of a charged electrophotographic member to form thereon a latent text and/or graphics image represented by the graphics and text data, the imaged member thereafter being toned and output from the system so that the toned image may be fused on the member and the member may be used as a printing plate in an offset lithographic printing press. The apparatus includes an optical system that may form a maximum of 22 individual rays which are deflected twice through a field flattening lens and then onto the charged member. The optical system further includes an optical scale or grating which provides electrical signals indicating the precise location of the individual rays along scan lines on the member. The apparatus further includes an electronic system which generates electrical signals from the graphics and text data to form the 22 individual rays.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: October 11, 1983
    Assignee: Coulter Systems Corporation
    Inventors: E. Raymond Thomas, Lysle D. Cahill, John L. Tibbits, Kenneth D. Fraser, John F. Keane, Stanley C. Harting, George H. Kramer, Ronald J. Duke, Theodore A. Kessis, John C. Butler, Gary L. Frank, John A. Lawson
  • Patent number: 4084259
    Abstract: A dot matrix recording system records a wide range of gray levels without compromising recording resolution. Resolution is maintained by using a relatively small dot matrix, preferably a 2 by 2 matrix, for representation of the graphic information at a point within an image being reproduced. When adjacent points within the image have the same optical density, then the matrix representation thereof is altered from point to point so as to produce a matrix of effectively increased size. The larger matrix or matrix group may comprise 4 of the 2 by 2 matrices positioned in a square arrangement. Thus when two horizontally adjacent points within an image have the same optical density and are situated immediately above two other points having the same optical density, then the four-point area is represented by a matrix group comprising a total of 16 matrix cells arranged in a 4 by 4 pattern.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: April 11, 1978
    Assignee: The Mead Corporation
    Inventors: Lysle D. Cahill, Arthur R. Brunswick