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  "updated": "2026-08-17",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4634/",
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    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
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      "date": "1896/1",
      "importance": 2,
      "event": "小林鎌太郎が東京・日本橋に個人経営の小林インキ店を創業",
      "source": "有価証券報告書"
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      "date": "1905",
      "importance": 1,
      "event": "合資会社に組織変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1907/1",
      "importance": 2,
      "event": "株式会社に改組し東洋インキ製造株式会社に商号変更",
      "source": "有価証券報告書"
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    {
      "date": "1917",
      "importance": 1,
      "event": "塩化バリウムの自製化に成功",
      "source": "公式サイト"
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    {
      "date": "1920",
      "importance": 1,
      "event": "アゾ顔料の自製化に成功",
      "source": "公式サイト"
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    {
      "date": "1937",
      "importance": 3,
      "event": "フタロシアニンブルーの自製化に成功し青戸工場で量産開始",
      "source": "公式サイト"
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    {
      "date": "1951",
      "importance": 3,
      "event": "米インターケミカル社と技術提携契約を締結",
      "source": "公式サイト"
    },
    {
      "date": "1959/10",
      "importance": 1,
      "event": "川越工場を建設",
      "source": "有価証券報告書"
    },
    {
      "date": "1960/8",
      "importance": 1,
      "event": "顔料・着色剤のオリエンタル化成を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1961/10",
      "importance": 1,
      "event": "東京証券取引所市場第二部に上場",
      "source": "有価証券報告書"
    },
    {
      "date": "1963/11",
      "importance": 1,
      "event": "富士工場を建設",
      "source": "有価証券報告書"
    },
    {
      "date": "1967/8",
      "importance": 1,
      "event": "東京証券取引所市場第一部に指定",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/3",
      "importance": 1,
      "event": "韓国に三永インキペイント製造を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/9",
      "importance": 1,
      "event": "タイに Toyo Ink (Thailand) Co., Ltd. を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1976/1",
      "importance": 1,
      "event": "米国に Toyo Ink America Inc. を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1980/4",
      "importance": 1,
      "event": "埼玉工場を建設",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/1",
      "importance": 1,
      "event": "中国に天津東洋油墨有限公司を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/11",
      "importance": 2,
      "event": "サカタインクスと生産・物流・デジタル関連事業・国際事業で業務提携",
      "source": "有価証券報告書"
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    {
      "date": "2001/8",
      "importance": 2,
      "event": "液晶カラーフィルター用材料の製造・販売を目的に台湾東洋彩光股份有限公司を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/1",
      "importance": 1,
      "event": "中国華東地区に上海東洋油墨制造有限公司を設立",
      "source": "有価証券報告書"
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    {
      "date": "2006/8",
      "importance": 1,
      "event": "インドに Toyo Ink India Pvt. Ltd. を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/4",
      "importance": 3,
      "event": "持株会社制に移行し東洋インキSCホールディングスに商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/1",
      "importance": 2,
      "event": "トルコの DYO Printing Inks 社の発行済株式の75%を取得",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/6",
      "importance": 2,
      "event": "決算期を3月31日から12月31日に変更",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/3",
      "importance": 1,
      "event": "監査役会設置会社から監査等委員会設置会社に移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "importance": 1,
      "event": "東京証券取引所プライム市場に移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/1",
      "importance": 3,
      "event": "artienceに商号変更",
      "source": "有価証券報告書"
    }
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}