RECORDING ELEMENT SUBSTRATE, LIQUID DISCHARGE HEAD, AND LIQUID DISCHARGE DEVICE

• Main Authors: MORIYA TAKATSUGU, IWANAGA SHUZO, YAMADA TATSUYA, ISHIDA KOICHI, KASAI SHINTARO, HAMMURA AKIKO, NAKAGAWA YOSHIYUKI, KISHIKAWA SHINJI, SEKINE TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 30.04.2021
• 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 provide a recording element substrate which can achieve stable liquid discharge performance by suppressing stress concentration of a support member caused by swelling of a discharge port forming member while suppressing deterioration of strength of the discharge port forming member to external force.SOLUTION: A recording element substrate 100 includes: a substrate 1 on which a plurality of energy generating elements 2 for generating energy used for discharging liquid are arranged side by side in a parallel installation direction; a discharge port forming member 8 on which a discharge port 9 is formed in a position corresponding to each of the plurality of energy generating elements 2; a plurality of supply passages 4 which are flow paths extending in a thickness direction of the substrate 1 and supply the liquid to the energy generating elements 2; and a support member 10 which is formed between the substrate 1 and the discharge port forming member 8 and supports the discharge port forming member 8. Supply ports 4a as openings of the plurality of supply passages 4 are arranged linearly on the substrate 1 side by side. The plurality of support members 10 are arranged side by side in a juxtaposing direction between the adjacent supply ports 4a on the substrate 1 in the juxtaposing direction.SELECTED DRAWING: Figure 3 【課題】吐出口形成部材の外力に対する強度低下を抑制しつつ、吐出口形成部材の膨潤による支持部材の応力集中を抑制し、安定した液体吐出性能を実現することが可能な記録素子基板を提供する。【解決手段】記録素子基板１００は、液体を吐出するために利用されるエネルギーを発生する複数のエネルギー発生素子２が並設方向に並設された基板１と、複数のエネルギー発生素子２のそれぞれに対応する位置に吐出口９が形成された吐出口形成部材８と、基板１の厚み方向に延びる流路であって、エネルギー発生素子２に液体を供給する複数の供給路４と、基板１と吐出口形成部材８との間に形成され、吐出口形成部材８を支持する支持部材１０と、を備える。複数の供給路４の開口である供給口４ａは、基板１上で直線上に並設され、支持部材１０は、基板１上で並設方向で隣接する供給口４ａの間に、並設方向に複数並んで設けられることを特徴とする。【選択図】図３