diff --git a/ECTrainer2/Logger.cpp b/ECTrainer2/Logger.cpp
index 3bc47c9..08e6c39 100644
--- a/ECTrainer2/Logger.cpp
+++ b/ECTrainer2/Logger.cpp
@@ -1,6 +1,9 @@
 #include "Logger.h"
 #include "nkcWinUtils.h"
 
+const char* Logger::DATA_LOG_FILE = LOG_DIR "%s_%s_%d.csv";
+const TCHAR* Logger::EVENT_LOG_FILE = _T(LOG_DIR "events.txt");
+
 // コンストラクタ
 Logger::Logger() 
 	: _logFileName(_T(""))
@@ -8,73 +11,66 @@
 
 }
 
-// ファイル出力（static）
-bool Logger::Write(TCHAR* filename, TCHAR* msg) {
+// ログを追記
+bool Logger::Append(const TCHAR* filename, const TCHAR* msg) {
 	if (_tcslen(filename) < 1) return false;
+
 	FILE* fp = NULL;
 	if (_tfopen_s(&fp, filename, _T("a")) != 0) {
 		nkc::wut::DebugPrintf(_T("Can't open data log file.\n"));
 		return false;
 	}
 
+	_ftprintf(fp, msg);
+
+	fclose(fp);
+	return true;
 }
 
-// ログ開始
-void Logger::Start(std::string subject, int visit) {
+// データログ開始
+void Logger::StartRecord(std::string subject, int visit) {
+	CreateDirectory(_T(LOG_DIR), NULL);
 
 	_logFileName = nkc::wut::Multi2Wide(
 		cv::format(DATA_LOG_FILE, nkc::wut::DateTimeStr().c_str(), subject, visit));
-	nkc::wut::DebugPrintf(_T("Log file : %s\n"), _logFileName.c_str());
+	nkc::wut::DebugPrintf(_T("Log start: %s\n"), _logFileName.c_str());
 
-	FILE* fp;
-	if (_tfopen_s(&fp, _logFileName.c_str(), _T("w")) != 0) {
-		nkc::wut::DebugPrintf(_T("Can't open data log file.\n"));
-		return;
-	}
+	TCHAR msg[1024];
+	_stprintf_s(msg, 1024, _T("time,stimNo,stimTime,gazeVx,gazeVy,shiftX,shiftY,"
+		"gazeIx,gazeIy,target,contact time,Feedback,TrainLevel,RR,pupilR,pupilL,"
+		"H11,H12,H13,H21,H22,H23,H31,H32,H33\n"));
 
-	// ヘッダ行
-	_ftprintf(fp, _T("time,stimNo,stimTime,gazeVx,gazeVy,shiftX,shiftY,"
-			"gazeIx,gazeIy,target,contact time,Feedback,TrainLevel,RR,pupilR,pupilL,"
-			"H11,H12,H13,H21,H22,H23,H31,H32,H33\n"));
-
-	fclose(fp);
+	Append(_logFileName.c_str(), msg);
 }
 
-// ログ出力
-void Logger::Write(Record& r) {
+// データログ出力
+void Logger::WriteRecord(Record& r) {
 
-	if (_logFileName.length() < 1) {
-		nkc::wut::DebugPrintf(_T("Log file is not set.\n"));
-		return;
+	double* ptr = r.H.ptr<double>(0);
+	TCHAR msg[1024];
+	_stprintf_s(msg, 1024, _T("%.3f,%d,%.3f,%.1f,%.1f,%.1f,%.1f"
+		",%.1f,%.1f,%d,%.2f,%d,%d,%d,%.1f,%.1f,%lf,%lf,%lf,%lf,%lf,%lf,%lf,%lf,%lf\n"),
+		r.ElapTime, r.StimNo, r.SceneTime, r.GazeV.x, r.GazeV.y, r.Shift.x, r.Shift.y,
+		r.GazeI.x, r.GazeI.y, r.Target, r.ContactTime, r.Feedback, r.TrainingLevel,
+		r.RR, r.PupilR, r.PupilL, *ptr, *(ptr + 1), *(ptr + 2), *(ptr + 3), *(ptr + 4),
+		*(ptr + 5), *(ptr + 6), *(ptr + 7), *(ptr + 8));
+
+	Append(_logFileName.c_str(), msg);
+}
+
+// イベントログ出力
+void Logger::WriteEvent(const TCHAR* msg) {
+	CreateDirectory(_T(LOG_DIR), NULL);
+
+	if (_tcslen(msg) < 1) {
+		Append(EVENT_LOG_FILE, _T("\n"));
+	} else {
+		std::wstring datestr = nkc::wut::Multi2Wide(nkc::wut::DateTimeStr());
+		TCHAR msgOut[1024];
+		_stprintf_s(msgOut, 1024, _T("%s %s\n"), datestr.c_str(), msg);
+		Append(EVENT_LOG_FILE, msgOut);
+		nkc::wut::DebugPrintf(msgOut);
 	}
-
-	FILE* fp = NULL;
-	if (_tfopen_s(&fp, _logFileName.c_str(), _T("a")) != 0) {
-		nkc::wut::DebugPrintf(_T("Can't open data log file.\n"));
-		return;
-	}
-
-	_ftprintf(fp, _T("%.3f"), r.ElapTime);					// 経過時間
-	_ftprintf(fp, _T(",%d"), r.StimNo);						// 刺激データ番号
-	_ftprintf(fp, _T(",%.3f"), r.SceneTime);				// 刺激提示の経過時間
-	_ftprintf(fp, _T(",%.1f,%.1f"), r.GazeV.x, r.GazeV.y);	// 注視点（視野カメラ座標）
-	_ftprintf(fp, _T(",%.1f,%.1f"), r.Shift.x, r.Shift.y);	// ずれ
-	_ftprintf(fp, _T(",%.1f,%.1f"), r.GazeI.x, r.GazeI.y);	// 注視点（画像座標）
-	_ftprintf(fp, _T(",%d"), r.Target);						// ターゲット判定
-	_ftprintf(fp, _T(",%.2f"), r.ContactTime);				// 目標コンタクト時間
-	_ftprintf(fp, _T(",%d"), r.Feedback);					// フィードバック
-	_ftprintf(fp, _T(",%d"), r.TrainingLevel);				// トレーニングレベル
-	_ftprintf(fp, _T(",%d"), r.RR);							// バイタル出力(RR間隔）
-	_ftprintf(fp, _T(",%.1f,%.1f"), r.PupilR, r.PupilL);	// 瞳孔径
-	if (!r.H.empty() && r.H.rows == 3 && r.H.cols == 3) {	// ホモグラフィ行列出力
-		double* ptr = r.H.ptr<double>(0);
-		for (int i = 0; i < 9; i++) {
-			_ftprintf(fp, _T(",%lf"), *(ptr + i));
-		}
-	}
-	_ftprintf(fp, _T("\n"));
-
-	fclose(fp);
 }
 
 // ログ停止
diff --git a/ECTrainer2/Logger.h b/ECTrainer2/Logger.h
index 065c355..f22c0dc 100644
--- a/ECTrainer2/Logger.h
+++ b/ECTrainer2/Logger.h
@@ -25,15 +25,17 @@
 
 // ログ記録クラス
 class Logger {
-	const char* DATA_LOG_FILE = LOG_DIR "%s_%s_%d.csv";
-	const TCHAR* EVENT_LOG_FILE = _T(LOG_DIR "events.txt");
 
 	std::wstring _logFileName;
+
 public:
+	static const char* DATA_LOG_FILE;
+	static const TCHAR* EVENT_LOG_FILE;
 	Logger();
-	static bool Write(TCHAR* filename, TCHAR* msg);
-	void Start(std::string subject, int visit);
-	void Write(Record& r);
+	static bool Append(const TCHAR* filename, const TCHAR* msg);
+	static void WriteEvent(const TCHAR* msg);
+	void StartRecord(std::string subject, int visit);
+	void WriteRecord(Record& r);
 	void Stop();
 };
 
diff --git a/ECTrainer2/Worker.cpp b/ECTrainer2/Worker.cpp
index 98b3b31..a5f506f 100644
--- a/ECTrainer2/Worker.cpp
+++ b/ECTrainer2/Worker.cpp
@@ -150,7 +150,7 @@
 		r.PupilL = pd.l;
 		r.PupilR = pd.r;
 		r.H = Ect()->PMarker()->GetHomography();	// ホモグラフィ行列
-		_DataLog.Write(r);
+		_DataLog.WriteRecord(r);
 	}
 
 	return true;
@@ -199,7 +199,7 @@
 
 	case (int)ECTMSG::EXP_START: // 実験開始
 		if (_AppStatus == APP_STATUS::IDLE) {
-			_DataLog.Start(Ect()->Subject(), Ect()->Visit());
+			_DataLog.StartRecord(Ect()->Subject(), Ect()->Visit());
 			this->EventLog(_T("Experiment Start"));
 			_pExpTimer->Reset();
 			this->ResetParams();
@@ -210,7 +210,6 @@
 
 	case (int)ECTMSG::EXP_STOP: // 実験停止
 		if (_AppStatus == APP_STATUS::STIM) {
-			_DataLog.Stop();
 			_AppStatus = APP_STATUS::IDLE;
 			Ect()->PStimulus()->PostMsg((int)ECTMSG::EXP_STOP);
 			this->EventLog(_T("Experiment Stopped"));
@@ -219,7 +218,6 @@
 
 	case (int)ECTMSG::EXP_END: // 実験終了
 		if (_AppStatus == APP_STATUS::STIM) {
-			_DataLog.Stop();
 			_AppStatus = APP_STATUS::IDLE;
 			Ect()->PStimulus()->PostMsg((int)ECTMSG::EXP_END);
 			this->EventLog(_T("Experiment Finished"));
@@ -270,53 +268,27 @@
 	return true;
 }
 
-//// データログファイルを開く
-//void Worker::OpenDataLog() {
-//	this->CloseDataLog();	// 念のため閉じる
-//
-//	auto filename = nkc::wut::Multi2Wide(cv::format(DATA_LOG_FILE, nkc::wut::DateTimeStr().c_str(),
-//		Ect()->Subject().c_str(), Ect()->Visit()));
-//
-//	if (_tfopen_s(&_fpLogData, filename.c_str(), _T("w")) != 0) {
-//		Ect()->MsgBox(_T("Can't open data log file."), MB_ICONERROR);
-//		return;
-//	}
-//
-//	// ヘッダ行
-//	_ftprintf(_fpLogData, 
-//		_T("time,stimNo,stimTime,gazeVx,gazeVy,shiftX,shiftY,"
-//			"gazeIx,gazeIy,target,contact time,Feedback,TrainLevel,RR,pupilR,pupilL,"
-//			"H11,H12,H13,H21,H22,H23,H31,H32,H33\n"));
-//}
-//
-//// データログファイルを開く
-//void Worker::CloseDataLog() {
-//	if (_fpLogData) {
-//		fclose(_fpLogData);
-//		_fpLogData = NULL;
-//	}
-//}
-
 // イベントログ出力
 void Worker::EventLog(const TCHAR* msg) {
+	Logger::WriteEvent(msg);
 
-	CreateDirectory(_T(LOG_DIR), NULL);
-	FILE* fp = NULL;		// イベントログファイルポインタ
+	//CreateDirectory(_T(LOG_DIR), NULL);
+	//FILE* fp = NULL;		// イベントログファイルポインタ
 
-	if (_tfopen_s(&fp, _T("../log/events.txt"), _T("a")) != 0) {
-		Ect()->MsgBox(_T("Can't open event log file."), MB_ICONERROR);
-		return;
-	}
+	//if (_tfopen_s(&fp, _T("../log/events.txt"), _T("a")) != 0) {
+	//	Ect()->MsgBox(_T("Can't open event log file."), MB_ICONERROR);
+	//	return;
+	//}
 
-	if (_tcslen(msg) < 1) {
-		_ftprintf(fp, _T("\n"));
-	} else {
-		std::wstring datestr = nkc::wut::Multi2Wide(nkc::wut::DateTimeStr());
-		_ftprintf(fp, _T("%s %s\n"), datestr.c_str(), msg);
-		nkc::wut::DebugPrintf(_T("%s %s\n"), datestr.c_str(), msg);
-	}
+	//if (_tcslen(msg) < 1) {
+	//	_ftprintf(fp, _T("\n"));
+	//} else {
+	//	std::wstring datestr = nkc::wut::Multi2Wide(nkc::wut::DateTimeStr());
+	//	_ftprintf(fp, _T("%s %s\n"), datestr.c_str(), msg);
+	//	nkc::wut::DebugPrintf(_T("%s %s\n"), datestr.c_str(), msg);
+	//}
 
-	fclose(fp);
+	//fclose(fp);
 }
 
 // コンタクト累積時間を取得