Abstract: A method of displaying an option screen in an image forming apparatus includes determining at least one operation option corresponding each of two or more image forming functions, among image forming functions provided by the image forming apparatus; generating an option screen in which regions for setting the operation options determined with respect to the two or more image forming functions are arranged in a same screen; and displaying the generated option screen through a user interface unit.

Abstract: A method of displaying an option screen in an image forming apparatus includes determining at least one operation option corresponding each of two or more image forming functions, among image forming functions provided by the image forming apparatus; generating an option screen in which regions for setting the operation options determined with respect to the two or more image forming functions are arranged in a same screen; and displaying the generated option screen through a user interface unit.

Abstract: A system to manage printing data using an FTP, the system includes a user terminal device to request a user authorization by transmitting certificate information using the FTP (File Transfer Protocol), and specifying at least one type of operation of storing and printing regarding at least one printing data to upload the printing data; and an image forming device in which the printing data is uploaded from the user terminal device using the FTP to perform the operation regarding the type of operation specified if authorization is granted, wherein the authorization is performed for the user authorization request from the user terminal device. Thus, it is possible to manage data using the existing FTP communication method between a user terminal device and an image forming device.