| 摘要 |
<P>PROBLEM TO BE SOLVED: To output a difference print regarding new image data at all times irrespective of whether or not newly inputted image data is newer than stored image data. <P>SOLUTION: An image forming apparatus 30 is provided with an image difference comparison means 32-3 for comparing first image data stored by an image storage means 32-4 with the second newly inputted image data and determining presence/absence of difference data, and an image formation means 32-2 for forming an image based on the difference data when it is determined that there is the difference data. In the image forming apparatus 30, the first and second image data have attribute information at least including time information when the data are created, an attribute difference comparison means 32-5 for comparing time information included in first attribute information which the first image data has and second attribute information which the second image data has and determining which image data is new and an image formation means 30 forms an image using the image data judged to be new by the attribute difference comparison means 32-5 as the difference data. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
