Scanning device

Abstract

A sheet-fed scanning device including a first scanning channel and a second scanning channel disposed in parallel, a first sensing element and a second sensing element is provided. The first sensing element corresponds to the first scanning channel for acquiring the image of a first type object. The first type object has a first surface which is adjacent to the first sensing element and within the range of the field depth of the first sensing element. The second sensing element corresponds to the second scanning channel for acquiring the image of a second type object. The second type object has a second surface adjacent to the second sensing element and a third surface dented to the second surface, wherein the third surface is within the range of the field depth of the second sensing element.

Dependencies are inferred from the claim text.