LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE DEVICE

• 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: 20.07.2017
• 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 allow a pressure chamber to be quickly refilled with liquid while downsizing a recording element substrate having a plurality of recording elements formed on one surface thereof.SOLUTION: On one surface of a recording element substrate is provided a groove-shape liquid supply path common to a plurality of recording elements, and further are provided a plurality of supply ports which penetrate through the recording element substrate and communicate the liquid supply path with a pressure chamber and a supply-side opening acting as a supply port for liquid to the liquid supply path. The sum of pressure loss of liquid in the liquid supply path ranging from a given supply-side opening to a supply port at a position farthest from the supply-side opening and pressure loss of liquid at the supply port at the time of discharging liquid is set to be 5000 Pa or less.SELECTED DRAWING: Figure 32 【課題】一方の面に複数の記録素子が形成された記録素子基板の小型化を図りつつ、圧力室への液体の再充填を速やかに行えるようになる。【解決手段】記録素子基板の他方の面に複数の記録素子に共通に溝状の液体供給路を設け、さらに記録素子基板を貫通して液体供給路と圧力室とを連通する複数の供給口と、液体供給路への液体の供給口となる供給側開口とを設ける。液体を吐出するときにおける、任意の供給側開口からその供給側開口から最も離れた位置にある供給口までの液体供給路での液体の圧力損失と、供給口での液体の圧力損失との和が５０００Ｐａ以下となるようにする。【選択図】図３２