diff --git a/src/printers/P700Printer.cpp b/src/printers/P700Printer.cpp
index 3d996e8..23e75f0 100644
--- a/src/printers/P700Printer.cpp
+++ b/src/printers/P700Printer.cpp
@@ -130,8 +130,8 @@ bool P700Printer::printMonochromeData(const graphics::MonochromeData& data) {
     // Send initialization sequence
     // The INITIALIZE command needs to be sent as a 128-byte packet with ESC @ at the end
     std::vector<uint8_t> initCmd(128, 0x00);
-    initCmd[126] = 0x1b;  // ESC
-    initCmd[127] = 0x40;  // @
+    initCmd[126] = p700::commands::INITIALIZE[0];  // ESC
+    initCmd[127] = p700::commands::INITIALIZE[1];  // @
     send(initCmd);
 
     // Status is already queried in getPrinterStatus()
@@ -139,8 +139,9 @@ bool P700Printer::printMonochromeData(const graphics::MonochromeData& data) {
     send(p700::commands::AUTO_STATUS);
     send(p700::commands::MODE_SETTING);
 
-    // Send raster data row by row
-    for (uint32_t row = 0; row < data.height; row++) {
+    // Send raster data row by row in reverse order (bottom to top)
+    // The printer feeds tape as it prints, so first row sent appears at the end
+    for (int row = data.height - 1; row >= 0; row--) {
         std::vector<uint8_t> rowData;
 
         // Extract row data byte by byte