INKJET RECORDING HEAD AND METHOD FOR PRODUCING THE SAME

To provide an inkjet recording head that can strike a balance between long-term ink resistance and a small linear expansion coefficient and a method for producing the same.SOLUTION: An inkjet recording head comprises a flow channel member, wherein the flow channel member is formed of a heat-cured pr...

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Bibliographic Details
Main Authors HAMADE YOHEI, IMAMURA ISAO
Format Patent
LanguageEnglish
Japanese
Published 20.01.2023
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
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Summary:To provide an inkjet recording head that can strike a balance between long-term ink resistance and a small linear expansion coefficient and a method for producing the same.SOLUTION: An inkjet recording head comprises a flow channel member, wherein the flow channel member is formed of a heat-cured product of a molding material comprising a resin composition comprising a thermosetting epoxy resin and a curing agent, and a filler; the filler comprises alumina and silica; and with d50 as a median diameter of the silica and with alumina A as the alumina having a median diameter of d50/4 or less, the content of the alumina A is 11 pts.mass or more relative to 100 pts.mass of the silica. There is also provided a method for producing the inkjet recording head.SELECTED DRAWING: Figure 1 【課題】長期の耐インク性と近い小さい線膨張係数を両立できるインクジェット記録ヘッドおよびその製造方法を提供する。【解決手段】流路部材を有するインクジェット記録ヘッドであって、該流路部材が、熱硬化性エポキシ樹脂および硬化剤を含有する樹脂組成物、並びにフィラーを含有する成形材料の熱硬化物で形成され、該フィラーが、アルミナおよびシリカを含有し、該シリカのメジアン径をｄ５０とし、メジアン径がｄ５０／４以下である該アルミナをアルミナＡとしたとき、該アルミナＡの含有量が、該シリカ１００質量部に対して１１質量部以上である、インクジェット記録ヘッド、並びにその製造方法。【選択図】図１
Bibliography:Application Number: JP20220010686