diff --git a/hgdriver/hgdev/hg_scanner_400.cpp b/hgdriver/hgdev/hg_scanner_400.cpp
index 438aba9..4eec677 100644
--- a/hgdriver/hgdev/hg_scanner_400.cpp
+++ b/hgdriver/hgdev/hg_scanner_400.cpp
@@ -277,7 +277,7 @@ void hg_scanner_400::thread_handle_usb_read(void)
 
 			imagedata->set_image_statu(statu);
 			ret = get_img_data(imagedata);
-			io_->set_timeout(200);
+		//	io_->set_timeout(200);
 
 			if (ret == SCANNER_ERR_OK)
 			{
@@ -340,7 +340,7 @@ int hg_scanner_400::start(void)
 	
 	USBCB usb = {START_COMMAND, img_conf_.scannum, 0};
 	ret = writeusb(usb);
-	io_->set_timeout(1000);
+	//io_->set_timeout(1000);
 	VLOG_MINI_1(LOG_LEVEL_WARNING, "device start is.(%s)\n", hg_scanner_err_name(ret));
 
 	if(ret == SCANNER_ERR_OK)
@@ -429,7 +429,7 @@ int hg_scanner_400::get_scanner_status(USBCB &usb)
 	if (ret != SCANNER_ERR_OK)
 		return ret;
 	
-	io_->set_timeout(500);
+	//io_->set_timeout(500);
 
 	ret = readusb(usb);
 	if (ret != SCANNER_ERR_OK)
@@ -454,7 +454,7 @@ int hg_scanner_400::get_img_data(std::shared_ptr<tiny_buffer> &imagedata)
 		status_ = ret;
 		return ret;
 	}
-	io_->set_timeout(500);
+	//io_->set_timeout(500);
 
 	printf_devconfig();
 
@@ -842,7 +842,7 @@ int hg_scanner_400::agreement(TwSS tw,int align)
 	}
 	
 	ret = writedown_device_configuration(true,&d);
-	io_->set_timeout(200);
+	//io_->set_timeout(200);
 
 	return ret;
 }
@@ -1227,7 +1227,7 @@ int hg_scanner_400::get_scanner_paperon(SANE_Bool* paperon)
 	USBCB usbcb = {GET_PAPER_STATUS, 0, 0};
 	len = sizeof(USBCB);
 	ret = writeusb(usbcb);
-	io_->set_timeout(500);
+	//io_->set_timeout(500);
 
 	if (ret == SCANNER_ERR_OK)
 	{
@@ -1272,7 +1272,7 @@ int hg_scanner_400::get_scan_is_sleep()
 	len = sizeof(USBCB);
 	ret = writeusb(usbcb);
 
-	io_->set_timeout(200);
+	//io_->set_timeout(200);
 
 	if (ret == SCANNER_ERR_OK)
 	{