Wireless printer - lost set up disc

Hi I have an Apple Mac Laptop - Macbook - i bought a Canon MG5250 printer/scanner/copier. I used the set up disc to install wireless and it worked great. I then changed my password for wireless internet and i dont know if thats the issue but now i can not print and my mac can not locate the printer. I can not find the set up disc to reinstall....

99% of network devices can be accessed by typing their IP address after the http:// in an internet browser address line

http://192.168.1.30, if 192.168.1.30 is the address.

Thanks so much.
How do I find the Ip address????

assuming you are running Windows...

download NETSCAN
run netscan

shows you all the IP addresses in your system, what they are assigned to.

download the drivers from canon website