Patent ID: 8223408
Filing Date: 2012-07-17
Classification: H04N

Abstract:
1. An image forming apparatus having a function of scanning a document having a larger size than a flat glass, comprising: a motor driving part for controlling a transferring roller driving motor which drives a transferring roller for transferring a second-sized document from a first region of the second-sized document to a second region of the second-sized document, in a scanning mode for the second-sized document larger than the first-sized document which can be scanned through the flat glass; a scanning part which scans the first region of the second-sized document loaded on the flat glass so as to have a larger width than the first-sized document and outputs a first image data, and also scans the second region of the second-sized document transferred by the transferring roller and loaded on the flat glass so as to have a larger width than the first-sized document and outputs a second image data; an image storing part for storing the first and second image data output from the scanning part; and an image composing part which performs a matching of image patterns using an overlaid region selected from the first and second image data, and overlaps images of the overlaid region so as to form an image having the same size as the second-sized document.