Patent ID: 8717644
Filing Date: 2014-05-06
Classification: H04N

Abstract:
1. An image scanning device comprising: a first scanner scanning a top side of a transported document at a first scanning position to obtain a first scanned image, a second scanner scanning a back side of said transported document at a second scanning position to obtain a second scanned image, said second scanning position arranged downstream of said first scanning position in the document transportation direction, a document feeder transporting said document at said second scanning position at a speed higher than the transportation speed at said first scanning position, and a controller controlling said image scanning device, said controller configured to set, as a scanning form of said document, one-side scanning of scanning one side of a document through one transportation, or dual-side scanning of scanning both sides of a document through one transportation, obtain a set magnification, determine the transportation speed of said document feeder such that, when said one-side scanning is set, the scanning magnification in a first direction corresponding to a transportation direction of said document attains said set magnification at said first scanned image, and when said dual-side scanning is set, the scanning magnification in said first direction attains said set magnification at said second scanned image, and execute electronic decimation on said first scanned image such that, when said dual-side scanning is set, the scanning size of said first scanned image is equal to the scanning size of said second scanned image in said first direction.