Replacing Dot Matrix Printer with custom Hardware

respect to all,

i'm working on project paperless replace dot matrix printer epson tmu220 with custom Hardware.
We have designed a hardware using ATMega 32 which will replace dot matrix printers.
we start with tapping data when pc sending data to printer , we use strobe pin 1 and data pin 2-9, when strobe low we capture the data.
data like below :
print "tes" from msword
the result of tapping :
<ESC>=<SOH>
<ESC>c0<STX>
<ESC>c1<STX>
<ESC>c3<NUL>
<ESC>2
<ESC>R<NUL>
<ESC>t<DLE>
<ESC>J<NUL>
<ESC>r<NUL>
<ESC>U<NUL>
<ESC>r<NUL>
<ESC>Jÿ
<ESC>J<DC1><CR>
<ESC>*<NUL><SO><NUL><STX><BEL><STX><STX><NUL><ETX><STX><STX><ETX><NUL><NUL><ETX><STX><STX><CR>
<ESC>r<SOH>
<ESC>J<DLE>
<ESC>r<NUL><CR>
<ESC>*<NUL><SO><NUL><NUL>à <NUL>à***<NUL> *à<CR>
<ESC>r<SOH>
<ESC>J<BS>
<ESC>r<NUL>
<ESC>J<NUL><GS>VB<NUL><GS>r1

where is the ascii "tes", we are not able to find it. what are the alternatives possible. Every reply would be greatly appreciated.

Thanks and Regards

Just to be sure you are capturing every character sent to the printer,
set your printer driver to send its output to a file (instead of printer) and cross check your file with the data captured by your device.