Abstract: 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. Each bit is loaded from the multiple-bit storage element into the binary optical display element one or more times during the display period to achieve the color intensity value.

Abstract: 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 generator circuitry generates the fire signals by controlling the initiation and duration of the fire pulses. The fire pulses control timing and activation of electrical current through the firing resisters to thereby control ejection of ink drops from the nozzles. One embodiment of the inkjet printhead assembly includes multiple printheads disposed on a carrier to form a wide-array inkjet printhead assembly.

Abstract: 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 signals received over the clock pad. Additional means transfers data from the shifting means to the data bus, and yet further means transfers data from the data bus to the shifting means.

Abstract: 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 drop generator in the primitive is fired at a given time. One drop generator in the primitive can be fired simultaneously with one drop generator in each of the other primitives. A primitive to address ratio (N/M) of the printhead is at least 10 to 1.

Abstract: 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. Each bit is loaded from the multiple-bit storage element into the binary optical display element one or more times during the display period to achieve the color intensity value.

Abstract: 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. Each bit is loaded from the multiple-bit storage element into the binary optical display element one or more times during the display period to achieve the color intensity value.

Abstract: 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 generator circuitry generates the fire signals by controlling the initiation and duration of the fire pulses. The fire pulses control timing and activation of electrical current through the firing resisters to thereby control ejection of ink drops from the nozzles. One embodiment of the inkjet printhead assembly includes multiple printheads disposed on a carrier to form a wide-array inkjet printhead assembly.

Abstract: 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 distributive processor integrated with an ink driver.

Abstract: 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 during a given time frame.

Abstract: 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 generator circuitry generates the fire signals by controlling the initiation and duration of the fire pulses. The fire pulses control timing and activation of electrical current through the firing resisters to thereby control ejection of ink drops from the nozzles. One embodiment of the inkjet printhead assembly includes multiple printheads disposed on a carrier to form a wide-array inkjet printhead assembly.

Abstract: 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 elements, each of which fires in response to the same data.

Abstract: 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 during a given time frame.

Abstract: 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 assembly. The module manager demultiplexes the serial data stream into N serial output data streams. The module manager provides the N serial output data streams and N corresponding output clock signals based on the input clock signal to the N printheads.

Abstract: 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 substrate, and formed of a second material having a second temperature coefficient of resistivity with the first material selected so that the first temperature coefficient of resistivity exceeds the second temperature coefficient of resistivity. An apparatus includes a substrate and a resistive element disposed onto a first region of the substrate and formed of a first material having a first temperature coefficient of resistivity.

Abstract: 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 substrate, and formed of a second material having a second temperature coefficient of resistivity with the first material selected so that the first temperature coefficient of resistivity exceeds the second temperature coefficient of resistivity. An apparatus includes a substrate and a resistive element disposed onto a first region of the substrate and formed of a first material having a first temperature coefficient of resistivity.

Abstract: 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 drop generator in the primitive is fired at a given time. One drop generator in the primitive can be fired simultaneously with one drop generator in each of the other primitives. A primitive to address ratio (N/M) of the printhead is at least 10 to 1.

Abstract: 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 elements, each of which fires in response to the same data.

Abstract: 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 includes a controller, a power supply and the printhead assembly. The printhead assembly includes a memory device and distributive integrated processor with an ink driver head.

Abstract: 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 processor integrated with an ink driver head. The distributive processor, the warming circuit and a sensor on the printhead assembly can regulate the temperature of the printhead assembly based on sensed and predefined operating information to maintain the printhead assembly within a desired temperature range.

Abstract: 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 layer disposed on a first face of the carrier, a second interface layer disposed on a second face of the carrier, and at least one power layer, data layer, and ground layer each interposed between the first and second interface layers. Each conductive via provides a conductive path through at least one of the insulative layers to provide electrical coupling between selected ones of the conductive layers, and each of the printhead dies are electrically coupled to the first interface layer.