Wi-fi network printing problems with Mountain Lion

On the Mac Mini, please make sure the printer queues are still shared, you can see the sharing status in the Print&Scan preference.

After that, please delete the printer queues on the other two machines and set them up again.

I think i have the same problem. my printer is connected to my imac running os 10.5.8 and is shared. I cannot print to that printer from my mac mini that i upgraded to mountain lion. I can print to it from my other imac that has 10.5.8 and i was able to print to it from my mini when i had snow leopard and then lion. Since the upgrade i cannot.

What behavior or error messages do you see on the other two computers when you print? On the Mac Mini, if you keep the printer proxies running and select the "Show Everyone's Jobs" menu item, do you see anything show up when you print from another computer? The /var/log/cups/error_log files on the client computers should have some useful information about why they cannot print.

Looks like the same problem here.

I have a wireless network with three macs,

one under Mountain Lion, one under Snow Leopard, one under Tiger.

Each Mac has its own printer, which is shared with the network.

Since upgrading to Mountain Lion, the Tiger machine can't see the ML-printer anymore.

Prior to updating with Mountain Lion, printer (Kodak Hero 7.1) worked perfectly well on wifi. Now it says printer not connected - kodak software says 10.8x compatible and to reinstall to resolve connection problems - reinstalled twice, rebooted printer and macbook pro, both to no avail - result being no printer is listed under 'bonjour' and attempts at adding IP address result in a 'printer' being listed - but not recognised and print requests just sit there waiting to no avail.

This has to be a fixable solution - any advice - a novice in such matters - being a keen 'plug and play'

This may seem silly but it resolved my problem. I have a 2008 iMac with a Canon printer plugged in and I was able to wirelessly print from a 2012 MBP when both were on Lion with print sharing. After both were upgraded to Mountain Lion, the MBP stopped finding the Canon and I got the same error messages that others were posting on various discussion threads. Then yesterday I realized that one of my iphone/ipad apps stopped talking to the iMac and the solution I used before was to reboot my Netgear router. As soon as the router was rebooted, the mobile app found the iMac again and sure enough the MBP found the Canon.

I wouldn't have thought the router was the problem had I not had the mobile app problem before because all this time all my wi-fi devices had perfect internet connection. But again this is my unique situation. I just want to throw this out in case someone want to give it a shot.

IL mac:

Thanks for your post. It certainly solved my issues also. I doubt your router is the problem and it's more likely to be the OS. I have had the same problem with my MBP (mid 2010) running Lion and my son's MBP (brand new) running Mountain Lion. The printer is reachable by IP address through the browser but the MBP's say "printer not connected" in the queue. However, the Windows Laptops (Vista) that we have can print fine when the MBP's can't. After rebooting the router through the browser control panel, the MBP's would then print like there was nothing ever wrong. Bit of a hassle, but the solution I've seen so far.

Thanks again for your post. Saved me some serious grief. Now if someone can solve the problem of having the ethernet port on my MBP go dead after the device goes to sleep...but that's for another thread.

Cheers!!