Patent ID: 9656821
Date: 2017-05-23
CPC Classifications: B65H,G03G

Claim:
1. A sheet conveyance apparatus for use by a user, the sheet conveyance apparatus comprising: a sheet containing portion configured to hold a plurality of sheets therein; an advancing mechanism configured to advance, to a paper path, the sheet held in the sheet containing portion; a first movement amount sensor disposed on the paper path to face a first surface of the sheet to detect a movement amount of the sheet; a second movement amount sensor disposed, on the paper path, in a position at which the first movement amount sensor is disposed to face a second surface of the sheet to detect a movement amount of the sheet; a memory configured to store a cumulative usage of the sheet conveyance apparatus; a humidity sensor structured to detect humidity of an installation site of the sheet conveyance apparatus; a determination portion configured to determine that a conveyance state of the sheet is multi-feed when a difference between the movement amount of the sheet detected by the first movement amount sensor and the movement amount of the sheet detected by the second movement amount sensor is equal to or greater than a threshold; wherein the threshold is set in accordance with a type of the sheet, the cumulative usage of the sheet conveyance apparatus, and the humidity of the installation site of the sheet conveyance apparatus; and wherein the type of the sheet is input by the user.