bizhub c280 driver issue

I have Minolta Bizhub c280 printer. I have 4 iMac hooked up to the same printer wireless. I had to re-install the operating system on 2 of the computers due to the loss of the admin password. The two new system installs were upgraded to El Captain. I have downloaded and install several drivers, and the printer is showing up in the printer option, but when I print, the printer isn't connecting, and I am getting that yellow explanation point. I have searched around, and called Minolta, but have found no answer. If anyone can help, I would greatly appreciate it, as we need to print from all 4 computers daily. Thanks for all that have some feedback. I could copy the printer driver information from one of the other computers, but I am not sure that will fix it, and I am not exactly sure where to look.

-Bill