ETC - unexpected contents print from shared printer (HP printer)

topic - unexpected contents print from shared

problem - during the printing from shared printer some unexpected contecnt printing at the same time, normally have sentence @PJL SET username=USER

solution - The connection between the PC and the printer must use the IP protocol. If use the printer add function provided by Windows, you need to be careful because the WSD protocol is automatically used.

Why is this special? - normally use add printer function by window setting menu