Sheet detection device

A sheet detecting device, comprising:

• a first sheet guiding component, disposed in a sheet tray, and movable between an initial position and a threshold position along a first direction;
• a plurality of conductor elements, each conductor element disposed in the sheet tray along the first direction and being conductor continuously extended, and arranged correspondingly between the initial position and the threshold position;
• and
• a first sensing element, disposed on and linked up with the first sheet guiding component, and disposed in spaced with the conductor elements and overlapping with at least a part of the conductor elements;
• wherein an overlapping portion between each conductor element and the first sensing element correspondingly generates a first capacitance value, and a first capacitance ratio of a plurality of first capacitance values of the conductor elements is substantially equal to a first predetermined value, corresponding to the first sensing element moves along the first direction.