iPad mobile (in vehicle) printing

I know AirPrint only prints over WiFi so that's probably not an option.

AirePrint via WiFi is the only way to print. There are printers that include their own router. It called adhock printing.

Are there any good app/bluetooth printer combinations that anyone has worked with from a vehicle?

Apple doesn't supply a bluetooth print driver.

Mobile printing.

This blogger found one solution.

http://genuinely-original.blogspot.com/search/label/iPad%20Printing

Make Portable Printing Easier with Print n Share and the Brother RJ-4040

http://prmac.com/release-id-44494.htm

Use an airprinter with a power inverter

http://genuinely-original.blogspot.com/search/label/iPad%20Printing

------------------------------------------------------

List of supported AirPrinters.

http://support.apple.com/kb/HT4356

--------------------------------------------------------------

You might need a router with this solution.

Buy another box

"xPrintServer enables wireless printing for iOS devices such as iPads® and iPhones® using their native print menu. It eliminates the need to print through apps, install software, or email yourself documents for printing. And more importantly, you don't need to buy a new printer because xPrintServer works with more than 4,000 top brand USB and network printers. "

http://www.lantronix.com/it-management/xprintserver/xprintserver.html

You have to check whether this box supports your printer

http://www.lantronix.com/it-management/xprintserver/xprintserver-supported-print ers.php

one option is a mobile printer which creates its own network such as the brother rj4040 and a compatible app like print n share: http://www.macworld.com/article/1167350/eurosmartz_updates_print_n_share_altamai l_apps.html

To answer your question, yes, the mobile hotspot can be used as the wifi router for a printer. You could find a way to power a large desktop printer that is airprint enabled. Failing that, I found a way to set up a mobile printer to work with iPad. I've created a parts list and a youtube video to help you get it set up. They can be found here:

http://makethisstuffwork.blogspot.com/2013/07/how-to-set-up-mobile-printer-to-wo rk.html

You can AirPrint with any printer that's supported by CUPS

The Linux printing system

You could use a raspberry pi, a cheap credit card sized Linux computer ($25.00)

It can run of a cigarette lighter adaptor

Plus a USB wifi adaptor ($10.00)

http://blog.snapdragon.cc/use-your-raspberry-pi-to-print-using-your-ipad-or-ipho ne/

You may need some sort of in car power adaptor to power the Pinter

Setup the raspberry pi as either a wireless access point or a adhoc connection with a dhcp server

Then on the iOS device, wireless settings find your raspberry pi and connect to it

If you've done everything correctly you'll be able to AirPrint to the printer

Zebra has a certified bluetooth printer called the imz320 that you can print to in iOS and your iPad. I use that printer along with an app called mobi print. It prints PDF's and images. Works great.