Not sure if there are any bods out there that use 10.6.8 server for AirPrint but if you do - you will have noticed that iOS6 doesn't see shared printers where as iOS5 does. Below is the fix. You need to be reasonably proficient with Terminal but otherwise - straightforward. Hope this helps.....
(Obviously you can stop the service and use Netputing's AiorPrint Activator but for a server based managed queueing system, this just allows it to works as it did before.)
10.6.8v1.1 Server and iOS6 AirPrint not working… Fix below…
Stop Print Services and as root from terminal using vi or equiv add the following:
(you will need to chmod 744 to edit then 444 the mime file after. 'touch' the files when your done)
It may work being left rwx but I don't know - I have just put the files back to their original state.
Restart print services after and you are all good.
Add the following line in bold (I have shown a few lines either side so you know where to put them):
image/pict pict pic PICT string(522, <001102FF0C00>)
image/urf urf (0,UNIRAST)
# Image formats supported by CGImageIO.
image/imageio crw cr2 nef bay raw dcr dng orf srf fax
Add the following line in bold:
text/css application/postscript 33 texttops
text/html application/postscript 33 texttops
image/urf application/vnd.cups-postscript 66 pdftops
image/gif application/vnd.cups-postscript 66 imagetops
image/png application/vnd.cups-postscript 66 imagetops
image/jpeg application/vnd.cups-postscript 66 imagetops