Patent ID: 8360424
Filing Date: 2013-01-29
Classification: B65H

Abstract:
1. A sheet thickness detection device for detecting a thickness of a sheet being conveyed, comprising: a conveyance unit configured to convey a sheet along a conveyance path; a displacement member configured to be displaced to follow a thickness of the sheet being conveyed, wherein said displacement member is comprised of a swing member pivotable about a fixed shaft, and one end portion of the swing member is pivoted to follow the thickness of the sheet; a displacement amount detection unit configured to detect an amount of displacement of said displacement member at plural positions with different degrees of amplification by which the amount of displacement is amplified, wherein an amount of pivot of another end portion of the swing member is detected, as an amplified amount of displacement, by said displacement amount detection unit; a sheet thickness detection unit configured to detect the thickness of the sheet based on a result of detection by said displacement amount detection unit in at least one of the plural positions; an acquisition unit configured to acquire sheet information representing a sheet type; and a selection unit configured to select one of the plural positions based on the sheet information acquired by said acquisition unit, wherein said sheet thickness detection unit detects the thickness of the sheet based on a result of detection by said displacement amount detection unit in the position selected by said selection unit.