Currently Being ModeratedNov 13, 2012 4:42 AM (in response to besb421)
My experience is with iPad 2, not the 4 or mini but the iPads don't support writing TO cards at all. The card reader and USB connector is only supported to read video or photo files from a card or camera.
The iPad has no file manager so it's all but impossible to write data off of it without using iTunes to sync the data.
You may want to look into something like dropbox or other online service even though those are limited to you having to have internet access to use the services.