diff --git a/huagao/Device/GScanO1003399.cpp b/huagao/Device/GScanO1003399.cpp
index 829c3835..24a8c69e 100644
--- a/huagao/Device/GScanO1003399.cpp
+++ b/huagao/Device/GScanO1003399.cpp
@@ -457,10 +457,20 @@ void GScanO1003399::usb_run()
 				}
 				else {
 					while (!scanner_read_reg(m_usb, SR_GET_IMAGEPROCESSDONE))
-						this_thread::sleep_for(chrono::microseconds(30));
-					if (m_param.is_duplex)
+						this_thread::sleep_for(chrono::microseconds(30));	
+					if (scanner_read_reg(m_usb, SR_GET_KEEP_LAST_PAPER))
+					{
+						this_thread::sleep_for(chrono::milliseconds(100));
+						im_rx();
+						if (m_param.is_duplex)
+							pop_dev_im();
 						pop_dev_im();
-					pop_dev_im();
+					}
+					else
+					{
+						keeplastimg = false;
+						im_rx();
+					}
 				}
 				scanflag = false;
 				if ((devState != DEV_WRONG) && (get_ErrorCode()<=0))
@@ -569,10 +579,40 @@ void GScanO1003399::im_rx()
 			else
 				image++;
 			UpdateScanInfo(countNReaded(), get_imgTransfered());
-			imgs.Put(buffi);
+			if (m_param.resolution_dst > 200.0f || m_param.papertype == 52 || m_param.papertype == 54 || m_param.papertype == 131)
+			{
+				auto path = cv::tempfile();
+				auto fd = fopen(path.c_str(), "wr+");
+				if (fd)
+				{
+					fwrite(buffi->data(), buffi->size(), 1, fd);
+					fclose(fd);
+					m_paths.push(path);
+				}
+				else {
+					FileTools::writelog(log_ERROR, "img temp file save error flie name =" + path);
+				}
+			}
+			else {
+				imgs.Put(buffi);
+			}
 			fu_imgpro.push(m_imgprocthread.enqueue([this] {
-				imgproce(imgs.Take()); 
-				}));
+				if (m_param.resolution_dst > 200.0f || m_param.papertype == 52 || m_param.papertype == 54 || m_param.papertype == 131)
+				{
+					if (m_imagedata.Size() > 1)
+					{
+						this_thread::sleep_for(chrono::milliseconds(10));
+					}
+					else
+					{
+
+					}
+				}
+				else
+				{
+					imgproce(imgs.Take());
+				}
+			}));
 			while (fu_imgpro.size()>1)
 			{
 				fu_imgpro.front().get();
diff --git a/huagao/Device/GScanO1003399.h b/huagao/Device/GScanO1003399.h
index 10a3e0e1..ab91748b 100644
--- a/huagao/Device/GScanO1003399.h
+++ b/huagao/Device/GScanO1003399.h
@@ -85,6 +85,8 @@ private:
 	ThreadPool m_imgprocthread;
 	std::shared_ptr<std::thread> m_usbthread;
 	std::shared_ptr<std::vector<char>> im_data;
+
+	std::queue<std::string> m_paths;
 	BlockingQueue<std::shared_ptr<std::vector<unsigned char>>> m_imagedata;
 	std::atomic_int image;
 	void* huagods;
diff --git a/huagao/Device/IConfig.h b/huagao/Device/IConfig.h
index 8baa3a11..e6a156a5 100644
--- a/huagao/Device/IConfig.h
+++ b/huagao/Device/IConfig.h
@@ -179,6 +179,7 @@ enum Scanner_Reg_Defs
 	SR_GET_SLEEPTIME,
 	SR_GET_SLEEP_STAUTUS,
 	SR_GET_IMAGEPROCESSDONE,
+	SR_GET_KEEP_LAST_PAPER,
 	SR_GET_CUO_ERROR = 0x50,
 	SR_GET_DOU_ERROR,
 	SR_GET_JAM_ERROR,