Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Piezoelectric transducer for use in ink ejector and method of manufacturing the piezoelectric transducer










Image Number 2 for United States Patent #7134746.

Inner individual electrodes are formed at intervals on a piezoelectric ceramic layer so as to correspond in a one-to-one relationship with ink channels, and an inner common electrode are formed on another piezoelectric ceramic layer. The required number of piezoelectric ceramic layers with inner individual electrodes and with an inner common electrode are laminated alternately. An outer common electrode is connected to the inner common electrodes, and outer individual electrodes are connected to the respective inner individual electrodes. The capacitance between the outer common electrode and each of the outer individual electrodes is measured. A polarization electric field adjusted based on the measured value is applied between the common electrode and each of the outer individual electrodes to perform polarization. As a result, each area defined over an ink channel by the stacked inner individual and common electrodes is polarized so as to be deformed by a uniform amount when a constant drive voltage is used.








 
 
  Recently Added Patents
Baseball themed hand clap maraca
Silicon-on-insulator (SOI) structure configured for reduced harmonics and method of forming the structure
Vapor phase decarbonylation process
Method, apparatus, and system for energy efficiency and energy conservation including dynamic cache sizing and cache operating voltage management for optimal power performance
Domestic soda-water preparing device
System and method of automatic piloting for in-flight refuelling of aircraft, and aircraft comprising said system
Process for preparing MDA via the stage of the aminal
  Randomly Featured Patents
Coin display and business-card holder
Apparatus for manufacturing chlorine dioxide
Shingle
Kernel memory free algorithm
Seal side segment
Reasoning computer system
Ion implantation device
Method of identifying a copied security document
Refrigeraton apparatus
Method for the separation of hexamethylcyclotrisiloxane