LIQUID DISCHARGE DEVICE AND PRELIMINARY DISCHARGE METHOD

• Main Authors: SAITO AKIKO, MORIYA TAKATSUGU, YAMADA TATSUYA, IWANAGA SHUZO, ISHIWATA TOMOKI, SATO TOMOATSU, ISHIDA KOICHI, KASAI SHINTARO, NAKAGAWA YOSHIYUKI, TOZUKA AYAKO
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2017
• 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 discharging even the liquid which thickens to the extent unable to be discharged in preliminary discharge by itself in the liquid discharge head of a circulation system in a liquid discharge device.SOLUTION: A liquid discharge device uses a liquid discharge head having a pressure chamber acting a pressure for discharging a liquid and a discharge port communicating with the pressure chamber, and discharges the liquid from the discharge port. The device comprises: a liquid circulation part making the liquid flow in/out of the pressure chamber via a flow channel; a preliminary discharge part performing a preliminary discharge operation from the liquid discharge head different from a main discharge operation of the head; and a preliminary discharge control part making the preliminary discharge part perform at least a part of the preliminary discharge operation after or during circulation of the liquid to the pressure chamber by the liquid circulation part.SELECTED DRAWING: Figure 13 【課題】液体吐出装置の循環方式の液体吐出ヘッドにおいて、予備吐出単独では排出できない程度の増粘が生じてもそれを排出することを可能とする。【解決手段】液体を吐出するための圧力を作用する圧力室と圧力室に連通する吐出口を備えた液体吐出ヘッドを用い、液体吐出ヘッドの吐出口から液体を吐出させる液体吐出装置は、流路を介して圧力室に液体を流入させるとともに流路を介して前記圧力室から液体を流出させる液体流通部と、液体吐出ヘッドから液体吐出ヘッドの本吐出動作とは異なる予備吐出動作を行う予備吐出部と、液体流通部による圧力室に対する液体の流通が行われた後または液体の流通が行われている間に、予備吐出部による予備吐出動作の少なくとも一部を行わせる予備吐出制御部と、を具える。【選択図】図１３