Patents by Inventor Raymond J. Barry

Raymond J. Barry 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).

  • Media tray stack height sensor with continuous height feedback and discrete intermediate and limit states
    Patent number: 7374163
    Abstract: A media stack height sensor in an image forming apparatus with a flag arm that is in contact with a top surface a media stack. The arm is coupled to a flag characterized by varying transmissivity. The flag is moveable by the flag arm so that as the position of the arm changes in relation to the stack height, a different portion of the flag is positioned between a transmitter and receiver of an optical sensor disposed within the body of the image forming apparatus. The flag accordingly reduces the amount of optical energy received by the receiver. The receiver output signal indicates the height of the media stack. The flag also includes features that further limit light transmission to the receiver to provide discrete stack height indications such as low, empty, full, or intermediate states.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: May 20, 2008
    Assignee: Lexmark International, Inc.
    Inventors: Willliam P. Cook, Daniel L. Carter, Niki J. Murrell, Raymond J. Barry
  • Multiple function encoder wheel for cartridges utilized in an electrophotographic output device
    Patent number: 5634169
    Abstract: Disclosed is a cartridge having an encoder wheel thereon for encoding EP supply cartridge characteristic information for an electrophotographic machine, the cartridge comprising, a sump for carrying an initial amount of toner. A shaft is mounted for rotation in said sump, and an agitator or paddle is mounted thereon in such a manner that when the shaft rotates, the paddle rotates into, through and out of engagement with toner carried by the sump. A single encoder wheel is mounted on the shaft, external of the sump, the encoder wheel positioned for proximate mating coaction with a coded wheel reader when the cartridge is mounted in position in the electrophotographic machine. A drive means, and a variable torque flexible coupling connects the drive means to the shaft to effect rotation thereof.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: May 27, 1997
    Assignee: Lexmark International, Inc.
    Inventors: Raymond J. Barry, Steven A. Curry, Benjamin K. Newman, Gregory L. Ream, Earl D. Ward, II, Phillip B. Wright
  • Accumulator roller synchronization with image size adjustment
    Patent number: 5450114
    Abstract: During manufacture of each printer (1) image size is corrected while close registration with the optical system (3) is assured by varying the pulses to a stepper motor driving accumulator roller (5). The length of an image printed using the optical sweep pulses to drive the stepper motor is observed and the change in frequency of stepper motor pulses is computed and entered as a factor in each printer of a control pulses system during manufacture. To assure registration with the optical system, the stepper motor is driven by each 200th optical sweep pulses and the control pulse system is reset and then supplies control pulses to the stepper motor until the next 200th optical sweep pulse.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: September 12, 1995
    Assignee: Lexmark International, Inc.
    Inventor: Raymond J. Barry