I haven't tried it yet, but I'm always leery of programs that "auto discover" printers....it's fine to automatically install drivers, but surely it should be possible to specify a printer mac address, and model and manually install the printer. I hate the "dumbing down" of printer client software...

New Printing Feature - What a load of S**T...

Help required - I have a HP Photosmart B110 eprint, and after the update on monday night to both iPad and iPod Touch 4th gen, I am unable to print. What was the point of adding this feature if it can not find my printer, or work with any printer. Have the apple staff just wasted there time, or just make the OS have the same functions as a Windows PC, at least I can still print from this device. This is a right pain in the a**, I was really looking forward to this feature. What am I doing wrong. I was told that HP and eprint was going to be the first printer, and with Apple and HP working together on Airprint, what has gone wrong. Why can I not print, am I going to have to wait for yet another update from Apple. So far, I have configured my Wi-Fi network, reconfigured my printer, and nothing. I can still see my printer via the iprint app, and can print (iPad), but not from my ipod touch...same app... What has gone wrong. Please Help

Do a google search....it has been discussed for the past couple weeks and the fix is available.

I want my HP Photosmart B110 eprint to work. wont find my printer from iPad and iPod Touch. Have Apple staff wasted there time adding this feature to the big update, when people wi-fi printers are not being picked up. Do I have to wait for another update next year to be able to print. I guess I will have to use Windows again. Help Please. Done everything to get this working, reconfigure printer, wi-fi printer and it does not work. what am I doing wrong. Do I have to wait for an update from HP or Apple.....?

OMG, ok, I'm going to sticky a thread on this topic...this is getting out of hand

I just downloaded and installed the demo version of Printopia. It's uncanny. I installed it on an iMac in my study, and a Canon MP480 connected via USB to an AirPort Express unit in another room was instantly recognized.

Well, that's nice, I thought. But how will this information be communicated to my iOS4.2.1. iPad?

The answer is that I have no idea. But when I go into Pages, or Safari, etc, and ask the new printer menu item to find printers, the Canon popped up.

I proceeded to print a page, and it worked fine. Bingo. Wireless printing from my iPad. And no code changing a la Hacktivate (which I tried first with no success).

Printopia - Share Your Mac's Printers to iPhone and iPad - Print from iPhone - Ecamm Network

The cost of the full version is $9.99.

I just went and bought a brand new HP Photosmart Plus e-AiO (B210a) printer.
This is one of the AirPrint compatible printers listed in the online iPad user guide (last bookmark in Safari bookmark list) and my newly 4.2.1 updated iPad WILL NOT PRINT to it!
I can print via wifi from my desktop PC and my laptop PC. The printer connected to the Internet and downloaded/installed an update. The iPad see's the printer. I can select the printer when selecting "print" from the action arrow. The iPad returns a message saying "Connecting to B210 series Printer" and sits there for several minutes. It then goes away and the print settings icon appears in the multitask menu with a status of "printing." Finally, a dialog box pops up saying the printer is offline....I then successfully print another test page from my laptop.
I have restarted the iPad, restarted the router and printer and finally unplugged and replugged the printer. The iPad will not print.

Everything else seems to be working with the new 4.2.1 update. Any ideas?

Cannot get ipad to find air printer. Seems to be no settings to even start looking.

THe HP iPrint app still works fine for my HP 8500A.. just thought things might get easier..

"AirPrint is a next-generation Wi-Fi print architecture that dramatically simplifies printing by completely eliminating printer drivers," Apple said in its announcement, emphasizing the user-friendliness for which the company is known.
What Apple did not highlight is that AirPrint works on only a very small subset of available wireless printers, 11, according to Apple's AirPrint information page, all of which are made by Hewlett Packard & Co. Anyone with one of the many wireless printers available from Lexmark, Epson, Canon, Brother or Samsung won’t be able to use the service. Nor does AirPrint yet work with most of HP's other wireless printers, including any of its lower-cost Officejet models.
A post from PC Magazine notes that six more HP models, including Officejets, will be available after Dec. 27, and that Apple will support other manufacturers "down the road." Apple did not immediately respond to questions about which manufacturers would be supported, or when.
Meanwhile, devices running iOS 4.2, the newest version of Apple's mobile operating system, will see an option to "Print" Web pages, e-mails and documents, but unless you've bought one of the select printers, all "Print" will get you is the screen shown above.