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Development of Ink Jet Printhead Equipped With a Large Monolithic Unimorph Piezoelectric Actuator Unit

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Kyocera realized a trapezoidal actuator unit with one inch width approximately, in which 664 portions of individual unimorph piezoelectric actuators are formed in matrix of 16 rows. This actuator unit has been used for its own piezoelectric ink jet printheads known as KJ4 series, in which four units are used to cover 4.25 inch (108.25 mm) print width.

Then, Kyocera has developed a larger actuator unit that covers 4.4 inch (112.35 mm) print width with monolithic rectangular body, in which numbers of individual active portions are arranged. And, it has been adopted for development of new ink jet printhead series.

As the first model of the new printhead series, 4.4 inch (112.35 mm), 300 npi ink jet printhead for aqueous ink is introduced. It is equipped with nozzles forming a matrix of 16 rows × 166 columns in 4.4 inch × 1 inch (112.35 mm × 25.4 mm) rectangular region. Each group of adjacent eight nozzle rows belongs to individual channel group, in which nozzles are arranged in 300 npi. And, independent driving conditions in voltage and waveform can be applied to each nozzle group. Practically, this printhead is intended to pack two pieces of 300 npi printheads in 200mm × 36mm × 61mm single body for downsizing and simplification in printer design especially for multi-pass printing applications.

Document Type: Research Article

Publication date: January 1, 2013

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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