printer is not connected

hi.. i'm using apple macbook pro. 15"

here is the situation:

1. i have wireless printer (Brother MFC-J3520), it connected to my network.
2. the network on my place run prefectly, can connect to internet, even my Synology drive.

the problems:

1. i cannot print with my wireless printer, it says "printer not connected"
2. after i restart my wifi router, i can print with my brother printer. but after 2 pages, the print stopped aand i cannot print again. even if i tried to restart the printing procedure, it back again to no 1.

troubleshooting:

1. i already update my wifi firmware
2. already update my printer firmware
3. restart and re setup my wifi

can anyone have same problem with me? and is anyone can help me with this situation?