{
  "timeline": [
    {
      "date": "1952/10",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "埼玉県浦和市に泰成光学工業株式会社を設立",
      "detail": "",
      "significance": "光学機器メーカーとしての出発点",
      "source": "有価証券報告書",
      "amount": "資本金2500千円"
    },
    {
      "date": "1959/9",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "本社および工場を埼玉県大宮市蓮沼に新設移転",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1966/6",
      "category": "資産圧縮",
      "region": "",
      "importance": 1,
      "event": "資本金6000万円に増資",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書",
      "amount": "6000万円"
    },
    {
      "date": "1969/5",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "青森県弘前市に弘前工場建設",
      "detail": "",
      "significance": "生産拠点の青森展開",
      "source": "有価証券報告書"
    },
    {
      "date": "1970/4",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "商号を株式会社タムロンに変更",
      "detail": "",
      "significance": "商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "東京都板橋区にタムロン商事株式会社を設立",
      "detail": "",
      "significance": "販売子会社設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1976/9",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "東京都北区滝野川に本社移転",
      "detail": "",
      "significance": "本社移転",
      "source": "有価証券報告書"
    },
    {
      "date": "1978/12",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "株式会社杉本商店に吸収合併されタムロンに商号変更",
      "detail": "株式額面金額変更のため形式上の存続会社化",
      "significance": "資本構造再編",
      "source": "有価証券報告書"
    },
    {
      "date": "1979/4",
      "category": "海外進出",
      "region": "米州",
      "importance": 3,
      "event": "アメリカにタムロン・インダストリーズ INC.を設立",
      "detail": "現TAMRON USA INC.",
      "significance": "初の海外子会社設立で米国市場参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1981/1",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "泰成光学工業・タムロン商事・和宏光機の3社を吸収合併",
      "detail": "",
      "significance": "グループ統合",
      "source": "有価証券報告書"
    },
    {
      "date": "1982/7",
      "category": "資産圧縮",
      "region": "",
      "importance": 1,
      "event": "資本金5億2037万円に増資",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/2",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "青森県浪岡町に株式会社オプテック・タムロンを設立",
      "detail": "",
      "significance": "生産子会社設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/2",
      "category": "資産圧縮",
      "region": "",
      "importance": 1,
      "event": "資本金8億5157万円に増資",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/12",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "金型設計製作会社の株式会社ファイン技研を買収し子会社化",
      "detail": "",
      "significance": "金型内製化",
      "source": "有価証券報告書"
    },
    {
      "date": "1986/1",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "青森県大鰐町に成形工場建設",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "オプテック・タムロンを吸収合併し浪岡工場とする",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1995/4",
      "category": "海外進出",
      "region": "欧州",
      "importance": 3,
      "event": "イギリスにTAMRON U.K. Ltd.を設立",
      "detail": "",
      "significance": "欧州市場参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/1",
      "category": "新規事業",
      "region": "",
      "importance": 3,
      "event": "ブロニカ株式会社より中判カメラ営業を譲受",
      "detail": "",
      "significance": "中判カメラ事業への進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/5",
      "category": "海外進出",
      "region": "中国",
      "importance": 3,
      "event": "中国香港にタムロン工業香港有限公司を設立",
      "detail": "",
      "significance": "中華圏拠点の確保",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/7",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "ブロニカ株式会社を吸収合併",
      "detail": "",
      "significance": "中判カメラ事業の統合",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/5",
      "category": "海外進出",
      "region": "欧州",
      "importance": 2,
      "event": "フランスにTAMRON France EURL.を設立",
      "detail": "",
      "significance": "フランス市場参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/6",
      "category": "海外撤退",
      "region": "欧州",
      "importance": 1,
      "event": "TAMRON U.K. Ltd.を清算",
      "detail": "",
      "significance": "英国子会社の撤収",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/4",
      "category": "資産圧縮",
      "region": "",
      "importance": 1,
      "event": "資本金65億5257万円に増資",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/4",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "埼玉県さいたま市見沼区蓮沼に本社移転",
      "detail": "",
      "significance": "本社移転",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/11",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "東京証券取引所市場第一部に株式を上場",
      "detail": "",
      "significance": "東証一部上場",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/3",
      "category": "海外進出",
      "region": "その他",
      "importance": 2,
      "event": "ロシアにTamron (Russia) LLC.を設立",
      "detail": "",
      "significance": "ロシア市場参入",
      "source": "有価証券報告書"
    }
  ]
}