RECORDING ELEMENT SUBSTRATE AND LIQUID DISCHARGE HEAD

• Main Authors: OHASHI RYOJI, NEGISHI TOSHIO, KOUSU YOHEI
• Format: Patent
• Language: English; Japanese
• Published: 25.06.2020
• 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 that can control a temperature of ink in good response to temperature variation of a recording element substrate, and a liquid discharge head.SOLUTION: A recording element substrate that discharges liquid comprises: a heating part 112 that heats liquid; a driving circuit 111 comprising an MOS transistor for driving the heating part 112; and a voltage generating part 110 that generates voltages for driving the driving circuit 111 and applies the voltages to a gate of the MOS transistor. The MOS transistor and the heating part 112 constitute a source follower circuit, and the voltage generating part 110 varies voltages to be applied to the gate in response to temperature variation of the recording element substrate.SELECTED DRAWING: Figure 5 【課題】記録素子基板の温度変化に対して応答性良くインクの温度制御をすることができる記録素子基板及び液体吐出ヘッドを提供する。【解決手段】液体を吐出する記録素子基板は、液体を加熱するための発熱部１１２と、発熱部１１２を駆動するためのＭＯＳトランジスタを備える駆動回路１１１と、駆動回路１１１を駆動するための電圧を生成し、電圧をＭＯＳトランジスタのゲートに印加する電圧生成部１１０と、を有する。ＭＯＳトランジスタと発熱部１１２とでソースフォロワ回路を構成しており、電圧生成部１１０は、記録素子基板の温度変化に伴いゲートに印加する電圧を変化させる。【選択図】図５