iPhones cannot find Brother Printer reliably with AirPrint (Brother support sent me here - network issue)
So I have a brother printer (MFC-J450DW), which is connected to my Mac OS X 10.9.5 desktop computer via a USB cable. Using this setup, I can print from my computer. However, I want to be able to AirPrint, and my router does not have wireless capabilities. So I have the aforementioned Mac hosting a Wi-Fi network, to which multiple iPhones and other devices are connected, including the printer in question. I meet all the requirements for an iOS device to AirPrint to a Brother printer that Brother knows of, and indeed I can after multiple restarts of an iPhone and a restart of the printer, I can see and print to the printer, but my iPhone always quickly loses sight of the printer, requiring me to perform the restarts all over again every time I want to print anything. This is to the point where it is easier to just put the documents right on the computer and print from there, rather than trying to AirPrint them. I contacted Brother support and they came to the conclusion that it is a network problem since I am running a non-standard network. So now I'm here. What's causing this issue and how do I fix it?
Other details:
-Using the Brother Printer app on an iPhone I still cannot reliably locate the printer.
-The iPhones are all iOS 8.4.1
-I can get the local IP Addresses if you need them, dunno if that matters.
Any and all help is appreciated.
iMac, OS X Mavericks (10.9.5)