Patent ID: 8902157

Claim:
An image display unit capable of displaying image data page-wise, comprising: an image data input portion configured to successively input a plurality of pages of page-wise image data; a display portion configured to display the image data input from the image data input portion in preview representation; an input condition determiner configured to perform a determination process for determining whether there is any change in a second input condition of a determination image data as a second image data to be determined in comparison with a first input condition of a reference image data as a first image data, the determination image data being an image data subsequently inputted immediately after the reference image data by the image data input portion; and, a display controller configured to, when the input condition determiner determines that there is a change in the second input condition compared with the first input condition, makes control such as to display, in parallel, the reference image data and the determination image data side by side together on the display portion, and when the input condition determiner determines that there is no change in the second input condition compared with the first input condition, makes control such as not to display the reference image data and the determination image data on the display portion, wherein the input condition determiner is configured to repeat the determination process, after completion of a previous determination process, by replacing the first image data as the reference image data with a second image data as the determination image data and by replacing the second image data as the determination image data with a third image data inputted immediately after the second image data, thereby the second image data becoming the reference image data and the third image data becoming the determination image data.