Patents by Inventor John Glenn Edelen

John Glenn Edelen 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: 7992952
    Abstract: Methods and apparatus for improving modularity in a micro-fluid ejection device and for providing instruction data to a plurality of data handling devices within a micro-fluid ejection device. The method includes generating device data and appending an address to the device data to generate instruction data. The address typically indicates at least one data handling device within the micro-fluid ejection device for which the device data is intended. The instruction data is provided to a plurality of data handling devices including at least one data controller. The data controller is operated to decode the address from the instruction data and select at least one data handling device to receive the device data based upon the decoded address. The device data is thereby input into each selected data handling device and subsequently used to operate the micro-fluid ejection device.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: August 9, 2011
    Assignee: Lexmark International, Inc.
    Inventors: John Glenn Edelen, Carson A. Fischer
  • Patent number: 7850286
    Abstract: A micro-fluid ejection head and method for reducing a stagger pattern distance and improving droplet placement, on a receiving medium. The micro-fluid ejection head includes a substrate containing a plurality of ejection actuators on a device surface thereof and a fluid supply slot for providing fluid to be ejected by the micro-fluid ejection head. The ejection head also includes a flow feature component in flow communication with the fluid supply slot and configured for providing fluid ejection chambers and fluid supply channels for the fluid ejection chambers. Adjacent first and second ejection actuators in a substantially linear array of ejection actuators are each spaced a first distance from the fluid supply slot and second and third ejection actuators in the linear array of ejection actuators are each spaced a second distance from the fluid supply slot that is less than the first distance.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: December 14, 2010
    Assignee: Lexmark International, Inc.
    Inventors: John Glenn Edelen, George Keith Parish, James Harold Powers
  • Publication number: 20100123758
    Abstract: A micro-fluid ejection device, such as an inkjet printhead, includes a substrate, a heater chip on the substrate, a structure on the substrate for supplying ink to the heater chip and a nozzle plate on the heater chip. The heater chip has a plurality of electrically-activatable spaced apart heater elements that can be repetitively subjected to momentary electrical activation and deactivation so as to cause cyclical heating and cooling of ink in the heater chip resulting in repetitive ejection of drops of ink by the nozzle plate on the heater chip. The device also includes a thermal control system in the heater chip being self-managed by operation of a control loop defined by the thermal control system internally of the heater chip and substrate for sensing and limiting the variation of the temperature of the substrate during cyclical operation of the heater elements of the heater chip.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 20, 2010
    Inventors: Steven Wayne Bergstedt, John Glenn Edelen, George Keith Parish, Kristi Maggard Rowe
  • Patent number: 7661782
    Abstract: Current control circuit for micro-fluid ejection heaters. In one embodiment, the current through a heater in a micro-fluid ejection device may be monitored and regulated to maintain a particular value or range of values. In such an embodiment, the heater current may be monitored and compared to a reference value. A signal may be induced based upon the divergence of the heater current from the value and the signal may be applied to the logic switch for the monitored heater. The logic switch may regulate the current through the heater based upon the induced signal. As a result of the regulation of the current, the induced signal may dynamically change thereby allowing fast regulation of the heater current.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: February 16, 2010
    Assignee: Lexmark International, Inc.
    Inventors: Steven Wayne Bergstedt, John Glenn Edelen, Carson A. Fischer
  • Publication number: 20100002033
    Abstract: Disclosed is a method for compensating a shift in an ON resistance of a transistor in a chip of a printhead of an inkjet printer. The method includes determining a value of a life indication parameter of the printhead and comparing the determined value of the life indication parameter of the printhead with at least one predetermined value of the life indication parameter. The at least one predetermined value of the life indication parameter of the printhead is stored in at least one of a memory of the inkjet printer and a memory of the chip of the printhead. Thereafter, a gate voltage input to the transistor is modified based on a difference between the determined value of the life indication parameter and the at least one predetermined value of the life indication parameter of the printhead for compensating the shift in the ON resistance of the transistor.
    Type: Application
    Filed: July 2, 2008
    Publication date: January 7, 2010
    Inventors: John Glenn Edelen, Prabuddha Jyotindra Mehta
  • Patent number: 7631953
    Abstract: Micro-fluid ejection apparatuses and devices, and methods related to communication in and with the same. One such micro-fluid ejection apparatus includes a controller configured to generate a data signal, and a transmitter configured to convert the data signal to a current signal. The apparatus further includes a conductor capable of carrying the current signal, and a receiver configured to receive the current signal from the conductor and to convert the current signal to a second data signal. The micro-fluid ejection apparatus is configured to operate on the second data signal. In one embodiment, the micro-fluid ejection apparatus may be a printing apparatus, such as an inkjet printing apparatus. In some embodiments, the current signal comprises a pair of corresponding differential current signals and/or current transfer logic signals offset from a base amperage level.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: December 15, 2009
    Assignee: Lexmark International, Inc.
    Inventors: Steven Wayne Bergstedt, John Glenn Edelen
  • Publication number: 20090097084
    Abstract: Micro-fluid ejection apparatuses and devices, and methods related to communication in and with the same. One such micro-fluid ejection apparatus includes a controller configured to generate a data signal, and a transmitter configured to convert the data signal to a current signal. The apparatus further includes a conductor capable of carrying the current signal, and a receiver configured to receive the current signal from the conductor and to convert the current signal to a second data signal. The micro-fluid ejection apparatus is configured to operate on the second data signal. In one embodiment, the micro-fluid ejection apparatus may be a printing apparatus, such as an inkjet printing apparatus. In some embodiments, the current signal comprises a pair of corresponding differential current signals and/or current transfer logic signals offset from a base amperage level.
    Type: Application
    Filed: December 17, 2008
    Publication date: April 16, 2009
    Inventors: Steven Wayne Bergstedt, John Glenn Edelen
  • Publication number: 20080316277
    Abstract: A micro-fluid ejection head and method for reducing a stagger pattern distance and improving droplet placement, on a receiving medium. The micro-fluid ejection head includes a substrate containing a plurality of ejection actuators on a device surface thereof and a fluid supply slot for providing fluid to be ejected by the micro-fluid ejection head. The ejection head also includes a flow feature component in flow communication with the fluid supply slot and configured for providing fluid ejection chambers and fluid supply channels for the fluid ejection chambers. Adjacent first and second ejection actuators in a substantially linear array of ejection actuators are each spaced a first distance from the fluid supply slot and second and third ejection actuators in the linear array of ejection actuators are each spaced a second distance from the fluid supply slot that is less than the first distance.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 25, 2008
    Inventors: John Glenn Edelen, George Keith Parish, James Harold Powers
  • Publication number: 20080303849
    Abstract: Methods and apparatus for improving modularity in a micro-fluid ejection device and for providing instruction data to a plurality of data handling devices within a micro-fluid ejection device. The method includes generating device data and appending an address to the device data to generate instruction data. The address typically indicates at least one data handling device within the micro-fluid ejection device for which the device data is intended. The instruction data is provided to a plurality of data handling devices including at least one data controller. The data controller is operated to decode the address from the instruction data and select at least one data handling device to receive the device data based upon the decoded address. The device data is thereby input into each selected data handling device and subsequently used to operate the micro-fluid ejection device.
    Type: Application
    Filed: June 11, 2007
    Publication date: December 11, 2008
    Inventors: John Glenn Edelen, Carson A. Fischer
  • Patent number: 7452041
    Abstract: A method for generating a clock pulse train within a heater chip of an ink jet printer that is used to serially load data into the chip eliminates the need for an externally generated clock signal. These heater chips with internally generated clock signals allow for reduced print head cost.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: November 18, 2008
    Assignee: Lexmark International, Inc.
    Inventors: John Glenn Edelen, Kristi Maggard Rowe
  • Publication number: 20080259105
    Abstract: Current control circuit for micro-fluid ejection heaters. In one embodiment, the current through a heater in a micro-fluid ejection device may be monitored and regulated to maintain a particular value or range of values. In such an embodiment, the heater current may be monitored and compared to a reference value. A signal may be induced based upon the divergence of the beater current from the value and the signal may be applied to the logic switch for the monitored heater. The logic switch may regulate the current through the heater based upon the induced signal. As a result of the regulation of the current, the induced signal may dynamically change thereby allowing fast regulation of the heater current.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 23, 2008
    Inventors: Steven Wayne Bergstedt, John Glenn Edelen, Carson A. Fischer
  • Patent number: 7310282
    Abstract: A method and circuit for preventing the overprogramming of a memory cell. A fuse circuit is operable to be blown. A combinational logic circuit receives a signal from the fuse circuit, indicating whether or not the fuse has been blown, and controls the programming of the memory cell. The programming of the memory cell is prevented if the fuse circuit has been blown.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: December 18, 2007
    Assignee: Lexmark International, Inc.
    Inventors: John Glenn Edelen, Nicole Marie Rodriguez
  • Publication number: 20070285105
    Abstract: The inventions relate to methods for trimming integrated circuits. Various embodiments include providing a method to trim an integrated circuit wherein trim data is stored in an on-board memory and then sent off of the circuit to be operated on by an external device. Corresponding trim data is then sent back to the integrated circuit in order to potentially modify the function of one or more analog devices along the circuit. Other embodiments include methods for trimming integrated circuits wherein trim data is stored in an on-board memory and retrieved using an on-board sequencer. The retrieved data is used to modify a function of one or more analog devices on the integrated circuit.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 13, 2007
    Inventors: Steven Wayne Bergstedt, John Glenn Edelen, Carson Allen Fischer
  • Patent number: 6976752
    Abstract: An ink jet printer includes a printhead control circuit that produces printhead command signals based on data signals provided by the printer. A power circuit actuates ink ejectors in response to the printhead command signals and includes a plurality of compensation circuits. Each ink ejector is associated with a single compensation circuit and each compensation circuit includes a number of switches connected in parallel with each other. Each switch in a single compensation circuit is connected to actuate a single ink ejector when the switch is turned on. The compensation circuits adjust their internal resistance by turning on more or less switches and thereby compensate for changing effective parasitic resistance of the power lines.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: December 20, 2005
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe, John Glenn Edelen
  • Patent number: 6890066
    Abstract: An inkjet printer includes a printhead for ejecting ink onto a print medium. The printhead includes electrical and mechanical structure for controlling the ejection of the ink. The printhead includes an ink ejector chip having at least one active device, such as a transistor and the like. A guard ring substantially surrounds select active devices included on the chip. The guard ring tends to prevent latch-up when the chip operates to energize the ink. The chip is manufactured using a substrate devoid of an overlying epitaxial layer which tends to reduce the cost of manufacturing the chip.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: May 10, 2005
    Assignee: Lexmark International, Inc.
    Inventors: George Keith Parish, Kristi Maggard Rowe, John Glenn Edelen
  • Publication number: 20040233255
    Abstract: An inkjet printer includes a printhead for ejecting ink onto a print medium. The printhead includes electrical and mechanical structure for controlling the ejection of the ink. The printhead includes an ink ejector chip having at least one active device, such as a transistor and the like. A guard ring substantially surrounds select active devices included on the chip. The guard ring tends to prevent latch-up when the chip operates to energize the ink. The chip is manufactured using a substrate devoid of an overlying epitaxial layer which tends to reduce the cost of manufacturing the chip.
    Type: Application
    Filed: May 22, 2003
    Publication date: November 25, 2004
    Inventors: George Keith Parish, Kristi Maggard Rowe, John Glenn Edelen
  • Patent number: 6789871
    Abstract: An inkjet printhead heater chip has an integral voltage regulator that derives two output voltages from a single chip input voltage. One of the two output voltages powers control logic circuitry as the other powers FET drivers. Preferred output voltages include +3.3 volts for the control logic circuitry and +7.5 volts for the FET drivers. A Vgs of the FET is about +7.5 volts which enables a FET area width of about 400 microns. Outputs of the control logic circuitry provide input to the FET drivers. A resistive heater for ejecting ink couples between a drain of the FET and the chip input voltage. Voltage regulating capacitors exist on the heater chip in parallel with the input voltage and each of the output voltages. Preferred capacitors have a gate oxide and a polysilicon layer overlying a substrate. Inkjet printers for housing the printheads are also disclosed.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: September 14, 2004
    Assignee: Lexmark International, Inc.
    Inventors: John Glenn Edelen, George Keith Parish, Kristi Maggard Rowe
  • Publication number: 20040125157
    Abstract: An inkjet printhead heater chip has an integral voltage regulator that derives two output voltages from a single chip input voltage. One of the two output voltages powers control logic circuitry as the other powers FET drivers. Preferred output voltages include +3.3 volts for the control logic circuitry and +7.5 volts for the FET drivers. A Vgs of the FET is about +7.5 volts which enables a FET area width of about 400 microns. Outputs of the control logic circuitry provide input to the FET drivers. A resistive heater for ejecting ink couples between a drain of the FET and the chip input voltage. Voltage regulating capacitors exist on the heater chip in parallel with the input voltage and each of the output voltages. Preferred capacitors have a gate oxide and a polysilicon layer overlying a substrate. Inkjet printers for housing the printheads are also disclosed.
    Type: Application
    Filed: December 27, 2002
    Publication date: July 1, 2004
    Inventors: John Glenn Edelen, George Keith Parish, Kristi Maggard Rowe
  • Patent number: 6616256
    Abstract: An n-bit serial shift register in an ink jet print head operates in a print mode or a test mode. When the shift register is operating in the print mode, n bits of print data are serially scanned into n number of bit registers and are then latched out to heater addressing logic circuitry in the print head to control a print operation. When the circuit is operating in the test mode, x bits of test point data from x number of test nodes in the print head are loaded in parallel into x number of the n number of bit registers, and are then serially scanned out to a test data output. In this manner, a single shift register may be used to scan in print data and scan out test data, thereby providing observability and controllability of the internal logic nodes of the print head while minimizing logic size and the number of input/output connections on the print head.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: September 9, 2003
    Assignee: Lexmark International, Inc.
    Inventors: William Paul Cook, John Glenn Edelen, George Keith Parish, Kristi Maggard Rowe, Susan Marie Zearfoss
  • Patent number: 6568785
    Abstract: An apparatus provides identification information related to at least one ink jet print head in an ink jet printer. The apparatus includes a printer controller for providing a first identification data string comprising n number of bits, at least one of which has a first state, and no more than n−1 number of which have a second state different from the first state. Coupled to the printer controller is a first ink jet print head having a first serial input shift register. The first serial input shift register has at least n number of bit positions for receiving the n number of bits of the first identification data string. The first ink jet print head also includes at least n number of first latches, each of which is coupled to a corresponding one of the n number of bit positions of the first shift register. The n number of first latches are for latching the n number of bits of the first identification data string from the n number of bit positions of the first shift register.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: May 27, 2003
    Assignee: Lexmark International, Inc
    Inventors: John Glenn Edelen, George Keith Parish, Kristi Maggard Rowe