The day after I installed the JB update, my HPePrint app wouldn't work correctly. So I uninstalled the app, then reinstalled it and it mentioned it was working with android 4.1 to make it all work right. After the installation of the app , it still didn't work right. So I just forgot about it and went about my life. Just now I tried the same printing options and it seems to have worked OK.
I don't know about the cards, sorry.
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really liking jelly bean so far my only gripe is getting rid of sleep mode.. but that's not a big deal