| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of omitting useless time and effort and time and executing efficiently authentication printing. <P>SOLUTION: The image forming apparatus having an authentication printing function is provided with a data storing part for storing authentication printing data and authentication information for authenticating the authentication printing data, a development forming part for developing the authentication printing data accompanied with storing the authentication printing data and forming rasterization data, a rasterization data storing part for storing the rasterization data formed, a time checking part for starting time checking accompanied with storing the authentication printing data, and a controlling part for controlling printing processing, and deleting rasterization data from the rasterization data storing part when the result of time checking exceeds a first threshold value. The controlling part performs printing processing based on the rasterization data when the authentication of the authentication printing data is performed within the first threshold value of the result of the time checking, and performs the printing processing based on the authentication printing data when the result of time checking of the time checking part exceeds the first threshold value and the authentication of the authentication printing data is performed. <P>COPYRIGHT: (C)2009,JPO&INPIT |
