17984322. LIQUID EJECTION APPARATUS AND CONTROL METHOD OF LIQUID EJECTION APPARATUS simplified abstract (CANON KABUSHIKI KAISHA)

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LIQUID EJECTION APPARATUS AND CONTROL METHOD OF LIQUID EJECTION APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

Rei Kurashima of Kanagawa (JP)

Toru Nakakubo of Kanagawa (JP)

Hiroyuki Ozaki of Kanagawa (JP)

LIQUID EJECTION APPARATUS AND CONTROL METHOD OF LIQUID EJECTION APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17984322 titled 'LIQUID EJECTION APPARATUS AND CONTROL METHOD OF LIQUID EJECTION APPARATUS

Simplified Explanation

The patent application describes a liquid ejection apparatus that includes various components and a control unit to ensure proper liquid ejection timing. Here are the key points:

  • The apparatus has an ejection unit that ejects liquid from a pressure chamber through an ejection port.
  • A first flow channel allows communication between the pressure chamber and a liquid supply unit.
  • A second flow channel is connected to the pressure chamber.
  • A liquid transportation chamber is connected to a connection flow channel, which in turn connects to the first and second flow channels.
  • A liquid transportation unit expands and contracts the liquid transportation chamber using a driving voltage with a step-up waveform and a step-down waveform.
  • A control unit ensures that the liquid ejection timing does not coincide with the voltage application period when the step-up or step-down waveform with a greater voltage change rate is applied.

Potential applications of this technology:

  • Inkjet printers and other printing devices that require precise liquid ejection.
  • Medical devices that involve liquid ejection, such as drug delivery systems or diagnostic equipment.
  • Industrial equipment that requires controlled liquid ejection, such as coating or spraying machines.

Problems solved by this technology:

  • Ensures proper liquid ejection timing by avoiding voltage application periods that could interfere with the ejection process.
  • Provides a controlled and efficient liquid transportation system.
  • Reduces the risk of clogging or other issues related to improper liquid ejection.

Benefits of this technology:

  • Improved accuracy and reliability in liquid ejection processes.
  • Enhanced performance and efficiency of liquid transportation.
  • Reduced maintenance and downtime due to clogging or other issues.


Original Abstract Submitted

A liquid ejection apparatus includes: an ejection unit that ejects from an ejection port a liquid in a pressure chamber communicating with the ejection port; a first flow channel that allows for communication between the pressure chamber and a liquid supply unit; a second flow channel communicating with the pressure chamber; a liquid transportation chamber communicating with a connection flow channel communicating with the first flow channel and the second flow channel; a liquid transportation unit that flows the liquid in the liquid transportation chamber in a predetermined direction by expanding and contracting the liquid transportation chamber with application of a driving voltage including a step-up waveform and a step-down waveform; and a control unit that performs control such that a liquid ejection timing does not coincide with a voltage application period in which one of the step-up and step-down waveforms that has a greater voltage change rate is applied.

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