Why ZDesigner GX420d printer show 1 inc Top margin?

Question

I am very new in ZPL and try to learn it. I am wright some code for label to print but i get unexpected result. ZDesigner GX420d printer is always show 1 inc Top margin.

Here is my ZPL Code :

CT~~CD,~CC^~CT~
^XA~TA000~JSN^LT0^MNW^MTD^PON^PMN^LH0,0^JMA^PR3,3~SD8^JUS^LRN^CI0^XZ
^XA
^MMT
^PW812
^LL0609
^LS0
^FT13,41^A0N,28,28^FH\^FDShip From :^FS
^FT13,75^A0N,28,28^FH\^FDAG Hair CosmZticsfwZfZwfwZfwZfwZ^FS
^FT13,109^A0N,28,28^FH\^FD8021 EntZrprisZ StrZZt^FS
^FT13,142^A0N,28,28^FH\^FDBurnaby, BC Canada V5A 1V5^FS
^FT12,216^A0N,28,28^FH\^FDINV#B32184^FS
^FT566,218^A0N,28,28^FH\^FDDZlivZry 11/8/2013^FS
^FT11,274^A0N,28,28^FH\^FDATTN : (ATTN)^FS
^FT590,273^A0N,28,28^FH\^FDCUST #(TYHA01)^FS
^FT10,348^A0N,28,28^FH\^FDShip To :^FS
^FT10,382^A0N,28,28^FH\^FDTY HAIR DESIGN^FS
^FT10,416^A0N,28,28^FH\^FD113-7320 KING GEORGE HWY^FS
^FT10,450^A0N,28,28^FH\^FDSURREY^FS
^FT738,530^A0N,28,28^FH\^FDCOD^FS
^FT11,528^A0N,28,28^FH\^FD( 1 OF 1) PiZcZs^FS
^PQ1,0,1,Y^XZ

My output is :

In ZebraDesigner Pro 2 :

I do not understand what is happening.

I defiantly do something wrong but do not know there.

Update :

I install ZDesigner GX420d driver

And Use Below code For Printing :

 RawPrinterHelper.SendStringToPrinter("ZDesigner GX420d", command);

 public static bool SendStringToPrinter(string szPrinterName, string szString)
    {
        IntPtr pBytes;
        Int32 dwCount;
        // How many characters are in the string?
        dwCount = szString.Length;
        // Assume that the printer is expecting ANSI text, and then convert
        // the string to ANSI text.
        pBytes = Marshal.StringToCoTaskMemAnsi(szString);
        // Send the converted ANSI string to the printer.
        SendBytesToPrinter(szPrinterName, pBytes, dwCount);
        Marshal.FreeCoTaskMem(pBytes);
        return true;
    }

I use RawPrinterHelper for send ZPL to Printer.