Patent ID: 8516570

Claim:
An image forming device capable of executing an authentication print printing, which is a printout process requiring a first input of user authentication using a predetermined authentication device and determining start of execution of the printout based on a result of the user authentication, and requiring a second input of user authentication in a separate operation for transitioning a user interface of the image forming device from a non-login mode to a login mode; the image forming device comprising: a communication interface, communicating with an external terminal, that receives job data from the terminal; an authentication print detecting unit that detects whether to execute a job related to the job data as the authentication print printing or a normal printout process by referencing predetermined data; an authentication unit that is the predetermined authentication device; a user authentication unit that outputs the result of the user authentication using the authentication unit; a job executing unit for executing the job related to the job data based on the result of the user authentication; a user interface with a display which provides information and an input unit which receives an input of information; and a user interface input mode switching unit for switching an information input/output mode of the user interface, wherein the input unit inputs an instruction to execute a first process and wherein the first process includes processes in which: the user authentication unit performs a user authentication for executing the authentication print printing using the first input of user authentication; the job executing unit starts the execution of the authentication print printing related to the job data based on the result of the user authentication output by the user authentication unit; and the user interface input mode switching unit invokes the result of the first input of user authentication used in the authentication print printing output from the user authentication unit for the second input user authentication to switch the information input/output mode of the user interface from a non-login mode to a login mode of information input/output mode capable of inputting information other than information related to the user authentication to start the execution of the authentication print printing.