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Inventor:
Barbour; Michael J.
Address:
Corvallis, OR
No. of patents:
19
Patents:












Patent Number Title Of Patent Date Issued
7161609 Multiple-bit storage element for binary optical display element January 9, 2007
An optical display element of one embodiment of the invention is disclosed that comprises a binary optical display element and a multiple-bit storage element to store a number of bits of a color intensity value to be displayed by the binary optical display element during a display pe
7029084 Integrated programmable fire pulse generator for inkjet printhead assembly April 18, 2006
An inkjet printhead assembly includes at least one inkjet printhead having nozzles and firing resisters. The inkjet printhead assembly includes fire pulse generator circuitry responsive to a start fire signal to generate fire signals, each having a series of fire pulses. The fire pulse
7019866 Common communication bus and protocol for multiple injet printheads in a printing system March 28, 2006
A printhead is provided with a data receiver and a data driver, each of which is coupled to a common data pad. The printhead is also provided with a clock pad and a data bus. Means for shifting data between the data receiver and the data driver shifts data in accordance with strobe s
6932453 Inkjet printhead assembly having very high drop rate generation August 23, 2005
An inkjet printhead assembly includes at least one inkjet printhead including N primitives and an address having M possible address values. Each primitive includes a group of at most M drop generators. The address is cycled through all M address values to control a sequence of which one
6888657 Multiple-bit storage element for binary optical display element May 3, 2005
An optical display element of one embodiment of the invention is disclosed that comprises a binary optical display element and a multiple-bit storage element to store a number of bits of a color intensity value to be displayed by the binary optical display element during a display period
6705694 High performance printing system and protocol March 16, 2004
This present invention is embodied in a printing system and protocol for providing efficient firing, processing, thermal and energy control of a printhead of an inkjet printer. The printing system includes a controller, a power supply and a printhead assembly having a memory device and a
6675775 System and method for delivering combustible liquids January 13, 2004
A fuel injector includes a drop ejector for discretely ejecting drops of combustible liquid in a digital manner. An electronic circuit controls the operation of the drop ejector, and, in particular, the amount of fuel supplied by the drop ejector by adjusting the number of ejected drops
6659581 Integrated programmable fire pulse generator for inkjet printhead assembly December 9, 2003
An inkjet printhead assembly includes at least one inkjet printhead having nozzles and firing resisters. The inkjet printhead assembly includes fire pulse generator circuitry responsive to a start fire signal to generate fire signals, each having a series of fire pulses. The fire pulse
6655770 Apparatus and method for printing with showerhead groups December 2, 2003
An ink jet printer (101) print head having multiple, redundant ink energizing elements arranged into clusters or groups (812), each of which attempts to expel ink onto media in a predetermined sequence. The effects of an ink energizing element failure are mitigated by using redundant
6585339 Module manager for wide-array inkjet printhead assembly July 1, 2003
A wide-array inkjet printhead assembly includes a carrier and N printheads and a module manager disposed on the carrier. The module manager receives a serial input data stream and corresponding input clock signal from a printer controller located external from the inkjet printhead assemb
6565178 Temperature measurement device May 20, 2003
An apparatus includes a substrate and a resistive element attached to a region of the substrate and formed of a first material having a first temperature coefficient of resistivity. In addition, the apparatus includes a pair of traces coupled to the resistive element, attached to the
6476928 System and method for controlling internal operations of a processor of an inkjet printhead November 5, 2002
A printing system having a printhead assembly with an integrated distributive processor for providing localized control of internal printhead processor operations. These internal operations include thermal, energy, firing and timing aspects of the printhead. The printing system inclu
6435668 Warming device for controlling the temperature of an inkjet printhead August 20, 2002
This present invention is embodied in a printing system having a printhead assembly with a warming circuit for controlling the temperature of an inkjet printhead. The printing system includes a controller, a power supply and a printhead assembly having a memory device and a distributive
6428145 Wide-array inkjet printhead assembly with internal electrical routing system August 6, 2002
A wide-array inkjet printhead assembly includes a carrier and a plurality of printhead dies mounted on the carrier. The carrier includes a plurality of conductive layers, a plurality of conductive vias, and a plurality of insulative layers. The conductive layers include a first interface
6412919 Transistor drop ejectors in ink-jet print heads July 2, 2002
The functions of an ink-jet print head drive transistor and ink-ejecting heat transducer (resistor) are combined into a single component, a high-temperature transistor. The transistor is turned on when an ink drop is required, and the resultant heat generated by the transistor is used
6375295 Reduced EMI printhead apparatus and method April 23, 2002
A printhead apparatus and accompanying method that achieve a staggered firing of multiple firing chambers within a firing interval to reduce EMI caused by multiple firing signal current transitions. The staggered firings may be achieved by delaying firing signals relative to others. The
6318828 System and method for controlling firing operations of an inkjet printhead November 20, 2001
The present invention is a printing system and method having a printhead assembly that controls firing operations of an inkjet printhead. In particular, the system and method control the firing and timing decisions pertaining to ink drop ejection through the use of various types of d
5992979 Thermal inkjet printhead warming circuit November 30, 1999
For each printhead nozzle, nozzle circuitry includes a warming transistor, drive transistor and heating resistor. To maintain a threshold temperature at the printhead, a warming pulse is sent from the warming transistor to the heating resistor of one or more nozzles when the temperature
5815180 Thermal inkjet printhead warming circuit September 29, 1998
For each printhead nozzle, nozzle circuitry includes a warming transistor, drive transistor and heating resistor. To maintain a threshold temperature at the printhead, a warming pulse is sent from the warming transistor to the heating resistor of one or more nozzles when the temperature










 
 
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