US Patent 7800767 Printing method and printing device

A printing device receives print data for confidential printing, and decides the output destination of the print data received for confidential printing either to be a lockable output bin that can be opened by a key so that the print data can be outputted in a format of being printed on paper, or a digital output bin that is capable of holding the print data and allowing the print data held there to be taken out for printing based on user verification.