LIQUID DISCHARGE DEVICE

• Main Authors: OKUI HIROAKI, WATANABE EIICHIRO, HASEGAWA MASARU
• Format: Patent
• Language: English; Japanese
• Published: 10.11.2023
• Subjects: CORRECTION OF TYPOGRAPHICAL ERRORS; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To suppress discharge characteristics from deteriorating.SOLUTION: A liquid discharge device is provided with: a liquid discharge head that comprises a first piezoelectric element that is driven in response to supply of a driving signal, a first nozzle that discharges liquid by pressure applied when the first piezoelectric element is driven, and a first individual passage, communicated with the first nozzle, through which liquid is supplied to the first nozzle and liquid not discharged from the first nozzle is ejected; a circulation control part that controls circulation motion of circulating liquid in the first individual passage; and a micro vibration control part that supplies a driving signal having a first waveform to the first piezoelectric element and controls micro vibration motion of vibrating liquid in the first nozzle while preventing the first nozzle from discharging liquid. The circulation control part starts the circulation motion at a first timing, and the micro vibration control part starts the micro vibration motion at a second timing earlier than the first timing.SELECTED DRAWING: Figure 15 【課題】吐出特性が低下することを抑制すること。【解決手段】液体吐出装置は、駆動信号の供給に応じて駆動する第１圧電素子と、前記第１圧電素子が駆動されることで付与される圧力によって液体を吐出する第１ノズルと、前記第１ノズルに連通し、前記第１ノズルに液体を供給しつつ前記第１ノズルから吐出されなかった液体を排出する第１個別流路と、を備えた液体吐出ヘッドと、前記第１個別流路内の液体を循環させる循環動作を制御する循環制御部と、第１波形を有する駆動信号を前記第１圧電素子に供給して、前記第１ノズルから液体が吐出されない程度に前記第１ノズル内の液体を振動させる微振動動作を制御する微振動制御部と、を有し、前記循環制御部は、第１タイミングから前記循環動作を開始し、前記微振動制御部は、前記第１タイミングよりも前の第２タイミングから前記微振動動作を開始する。【選択図】図１５