Dot Matrix Print Out with Extra Line "@EJL 1284.4" on left upper coner

Step 1.
 - Using Command Prompt on Notepad with Administrator Right
 - Locate folder C:\Windows\System32\spool\drivers\w32x86\3
 - Open the file "ESCP6RW.GPD" or "ESCP6.GPD", it depend on your printer model

Step 2.
 - File Type must select ALL and open "ESCP6V.GPD"

Step 3
 - Search "EJL"
 - Delete the following picture two line (highlight)
 - Save the file and try printing again.

Information Source from BaiDu Doc
http://wenku.baidu.com/view/86c26ed3ad51f01dc281f1aa.html