Patent ID: 8393615
Filing Date: 2013-03-12
Classification: B65H

Abstract:
1. A document position-limiting mechanism for use in a paper input tray of an automatic document feeder, said document position-limiting mechanism comprising: a first paper guide plate disposed on said paper input tray for guiding a document to be fed into said automatic document feeder, wherein said first paper guide plate has an extension arm; a second paper guide plate located at a first side of said first paper guide plate for guiding said document to be fed into said automatic document feeder, wherein said second paper guide plate is movable in a direction opposite to a moving direction of said first paper guide plate; a connecting wheel arranged between said first paper guide plate and said second paper guide plate, and respectively engaged with said first paper guide plate and said second paper guide plate, so that said second paper guide plate is movable in said direction opposite to said moving direction of said first paper guide plate; and a switching module disposed on said paper input tray for switching an operating mode of said document position-limiting mechanism from a manual positioning mode to a graduation positioning mode or from said graduation positioning mode to said manual positioning mode, wherein said witching module comprises: