diff --git a/hgdriver/hgdev/hg_scanner_239.cpp b/hgdriver/hgdev/hg_scanner_239.cpp
index 60917af..e305d47 100644
--- a/hgdriver/hgdev/hg_scanner_239.cpp
+++ b/hgdriver/hgdev/hg_scanner_239.cpp
@@ -1618,7 +1618,7 @@ int hg_scanner_239::set_clear_history_num(void)
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 int hg_scanner_239::set_leaflet_scan(void)
 {
-	std::lock_guard<std::mutex>      lock(io_lock_);
+	//std::lock_guard<std::mutex>      lock(io_lock_);
 	int ret 		= SCANNER_ERR_OK;
 	test_1_paper_ = true;