LIQUID DISCHARGE DEVICE AND CONTROL METHOD

• Main Authors: SAITO AKIKO, MORIYA TAKATSUGU, YAMADA TATSUYA, ISHIWATA TOMOKI, IWANAGA SHUZO, SATO TOMOATSU, ISHIDA KOICHI, KASAI SHINTARO, NAKAGAWA YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 17.08.2017
• 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

PROBLEM TO BE SOLVED: To provide a liquid discharge device capable of providing high-quality output.SOLUTION: A liquid discharge head mounted on a liquid discharge device of the present invention is formed from an energy generating element, a discharge port provided at a position opposite the energy generating element, a head substrate on which a plurality of energy generating elements are arranged, and a discharge port forming member having a plurality of discharge ports. The liquid discharge head is a so-called circulation-type head, and liquid in the vicinity of the energy generating element is supplied from a liquid inflow flow passage and discharged to a liquid recovery flow passage. The liquid discharge device of the present invention also acquires information on an evaporation speed which is a speed of a volatile component contained in the liquid evaporating from a discharge port during an undischarged time in which no liquid is discharged from the discharge port. A flow speed of liquid generated in the direction going from the liquid inflow flow passage toward the liquid recovery flow passage through a pressure chamber is controlled based on the acquired information on the evaporation speed.SELECTED DRAWING: Figure 2 【課題】高品質な出力を得ることができる液体吐出装置を提供すること。【解決手段】本発明の液体吐出装置に搭載される液体吐出ヘッドは、エネルギー発生素子と、エネルギー発生素子に対向する位置に設けられる吐出口と、エネルギー発生素子が複数配置されるヘッド基板と、吐出口を複数有する吐出口形成部材とから構成される。液体吐出ヘッドはいわゆる循環型ヘッドであり、エネルギー発生素子近傍の液体は、液体流入経路から供給され、液体回収流路に排出される。本発明の液体吐出装置はさらに、吐出口から液体が吐出していない非吐出時に、吐出口から液体に含まれる揮発性成分が蒸発する速度である蒸発速度に関する情報を取得する。取得された蒸発速度に関する情報に基づいて、液体流入流路から圧力室を通過して液体回収流路に向かう方向に生じる液体の流速が制御される。【選択図】図２