Printing on button click

I'm hoping someone can help me, I am trying to make a signing in and out siteto be used to a touchscreen computer in reception where I work that can be accessed via others to see who is in etc. What I am wanting is for it to be able to click a button once they have added there details in and then to print them a sticker with there name and company and the logo on etc. But I don't want it to come up with the print dialog box but to just print. I'm assuming this will all have to be done server side in order to bypass the print dialog box. But I have no idea how to do it to be perfectly honest. I will also need it for printing out a report of which visitors are in when the fire alarm goes off which needs to be quick so it's not viable to just tell visitors to click the print in the print dialog box themselves.

Thanks