Use an usb printer from an Android device I have an old usb printer and I'm wondering if it's possible to use it to print from an Android device.

I'm thinking a micro-usb-to-usb adapter and then just plug it in... Will it work? If not out of the box, how simple is it?
It likely wont. Because two things:

1) Drivers: Android wont know how to operate that printer. All ends here.

2) Even if printer has some Gandalf's spell to be detected by android, AFAIK android doesn't have a mechanism to pass out binary pixel data to printer to print the image.