Patents Represented by Attorney Navarro Law Offices, P.C.
  • Patent number: 7261478
    Abstract: A printing device (10) such as a laser printer includes a radio frequency controller (38) which permits the detection and redirection of media having one or more defective radio frequency device tags, such as an RFID tag, to a specific one of two or more output options (50, 52). The radio frequency controller (38) may include radio frequency control logic (500) that communicates with the base printer (10) and the output options (50, 52) over a down port (506) and up port (508) to intercept commands from the printer (10) to the options (50, 52) and to also respond to such commands. A defective tag can be detected by attempting to program a tag using an RF reader/programmer (504).
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: August 28, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Raymond Michael Marowski, David John Mickan, Mark Stephen Underwood
  • Patent number: 6931224
    Abstract: A vent integral with the top surface of toner hopper (5) having three labyrinth channels (3a-3c) oriented in one direction and three labyrinth channels (3d-3f) oriented in an orthogonal direction. Each labyrinth communicates with the inside of the hopper by a hole (13a-13f) and the end of each labyrinth communicates with filter pad (7) held in a basin (11) formed in the top surface of hopper (5). Cover (9) closes the vent except for hole (15) over the center of pad (7).
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: August 16, 2005
    Assignee: Lexmark International, Inc.
    Inventors: Mark Duane Foster, Robert Watson McAlpine, Robert Francis Soto, Gregory Scott Tigges