How to avoid Restart Bluetooth Printer after print? - printing

Question

I have developed windows mobile 6.1 application which search nearby Bluetooth devices and send files.Also I did print functionality to print document on Bluetooth printer.
First time print functionality is working perfectly fine but when I print the document again, then I need to restart the printer and then after it will print.
Is there any solution to avoid restart printer??
Below is my print code from reference of https://32feet.codeplex.com/discussions/355451
private void btPrint_Click(object sender, EventArgs e)
{
// Activate BT
BluetoothRadio.PrimaryRadio.Mode = RadioMode.Connectable;
System.Threading.Thread.Sleep(1000);
// Connect
BluetoothAddress btAddress;
btAddress = BluetoothAddress.Parse("0022583165F7");
BluetoothClient btClient = new BluetoothClient();
try
{
btClient.Connect(new BluetoothEndPoint(btAddress, BluetoothService.SerialPort));
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
// Send data
string CPCLStr1 =
"! 0 200 200 210 1" + Environment.NewLine +
"ML 25" + Environment.NewLine +
"TEXT 7 0 10 20" + Environment.NewLine +
"Just" + Environment.NewLine +
"Testing" + Environment.NewLine +
"ENDML" + Environment.NewLine +
"FORM" + Environment.NewLine +
"PRINT" + Environment.NewLine;
// Convert CPCL String to byte array
byte[] CPCLbytes1 = ASCIIEncoding.ASCII.GetBytes(CPCLStr1);
NetworkStream ns = btClient.GetStream();
ns.Write(CPCLbytes1, 0, CPCLbytes1.Length);
btClient.Close();
}

Answer 1

Although you close the client stream, the printer seems to wait some time before it resets it's session.
Try to send a <EOF> or <EOT> byte at the end.
Acording to CPCL reference guide there is no simple reset command as with ESC/p for example ({esc}#).
Doing a device reset after every print seems an overkill.
EDIT: SDK sample for sendFile:
Byte[] cpclLabel = Encoding.Default.GetBytes("! 0 200 200 406 1\r\n" + "ON-FEED IGNORE\r\n"
+ "BOX 20 20 380 380 8\r\n"
+ "T 0 6 137 177 TEST\r\n"
+ "PRINT\r\n");
The above runs fine on my RW420 without the need to reset between prints.