RECORDING ELEMENT SUBSTRATE, 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: 30.11.2017
• 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 recording element substrate that has a projection for suppressing mist from being generated and that can suppress the projection from breaking and also remove a droplet and foreign matter sticking on an outer edge part of a discharge port.SOLUTION: A recording element substrate 100 comprises: a substrate 1; an energy generation element 2 which is arranged on one surface of the substrate 1 and generates energy to be used to discharge liquid; and a discharge port formation member 8 having a discharge port 9 for discharging the liquid formed. A projection 11 which projects into each discharge port 9 is formed on an inner side face of the discharge port 9, a tip part of the projection 11 is positioned on a side closer to the substrate 1 than an outer edge part 12 of the discharge port 9 on a surface 8a, on a side farther from the substrate 1, of the discharge formation member 8.SELECTED DRAWING: Figure 2 【課題】ミストの発生を抑制する突起を有する記録素子基板において、突起の折れを抑制し、且つ、吐出口の外縁部に付着した液滴や異物を除去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、基板１と、基板１の一面に配設され、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エネルギー発生素子２と、液体を吐出する吐出口９が形成された吐出口形成部材８と、を備え、各吐出口９の内側面には、当該吐出口９の内側に向かって突出する突起１１が形成されており、吐出口形成部材８の基板１から遠い側の表面８ａにおいて、突起１１の先端部分は、吐出口９の外縁部１２よりも基板１に近い側に位置する。【選択図】図２