Resources Contact Us Home
Printhead with elongate array of nozzles and distributed pulse dampers

Image Number 10 for United States Patent #7475976.

A printhead for an inkjet printer that has an elongate array of nozzles (68) for ejecting ink and ink conduits for supplying the array of nozzles with ink. The ink conduits extend adjacent the elongate array and have a plurality of pulse dampers individually in fluid communication with the ink conduits, each containing a volume of gas for compression by pressure pulses in the ink conduits, distributed along the length of the elongate array. A pressure pulse moving through an elongate printheads, such as a pagewidth printhead, can be damped at any point in the ink flow line. However, the pulse will cause nozzle flooding as it passes the nozzles in the printhead integrated circuit, regardless of whether it is subsequently dissipated at the damper. By incorporating a number of pulse dampers into the ink supply conduits immediately next to the nozzle array, any pressure spikes are damped at the site where they would otherwise cause detrimental flooding.

  Recently Added Patents
Arbitration for memory device with commands
Sensing device and electronic apparatus
Intermediate film for laminated glasses, and laminated glass
Universal data-driven computer proxy
Substrate and patterning device for use in metrology, metrology method and device manufacturing method
Architectural panel with millet and grass
Segmentation of a product markup image based on color and color differences
  Randomly Featured Patents
Apparatus of exhaust gas recirculation valve for an internal combustion engine
Use of a TAS2R7 nucleic acid sequence to identify modulators
Document validation system and method
Pneumatic tire for use on agricultural tractors and other like vehicles
Polymer of 4-methylpentene-1
Identification of mounting locations of sub-systems in mounting units
Process and arrangement for measuring a magnetic field using the faraday effect with compensation for variations in intensity and temperature effects
Press machine
Method of identifying symbolic points on an image of a person's face
Control of electronic information delivery