A sheet feeding apparatus comprising: a sheet stacker to stack at least one sheet; a sheet feed roller disposed at one side of the sheet stacker and to feed a sheet fed from the sheet stacker; a multi-feed prevention roller disposed to face the sheet feed roller and to prevent multi-feed of sheets fed from the sheet stacker; a magnetic torque limiter disposed coaxially with the multi-feed prevention roller; a hall sensor disposed at one side of the magnetic torque limiter and to detect a rotation and a rotational direction of the magnetic torque limiter; and a controller to control rotation of the sheet feed roller in a state in which the sheet feed roller and the multi-feed prevention roller are in contact with each other without a sheet and to determine a value indicative of usage corresponding to the multi-feed prevention roller according to a signal indicative of the detected rotation and rotational direction of the magnetic torque limiter output from the hall sensor, characterised in that the magnetic torque limiter comprises: a plurality of permanent magnets provided circumferentially on a rotation shaft of the multi-feed prevention roller; a housing to surround the plurality of permanent magnets; and a magnetic member provided on an inner circumferential surface of the housing and facing the plurality of permanent magnets, wherein a portion of the housing facing the hall sensor is provided with a magnetic force emitting region through which a magnetic force of each of the plurality of permanent magnets is radiated to an outside of the housing over an entire circumference of the housing to cause the detection of the rotation and the rotational direction of the magnetic torque limiter by the hall sensor, wherein the sheet feeding apparatus is further either characterised in that: a length of the magnetic member is smaller than a length of each of the plurality of permanent magnets, and wherein the magnetic force emitting region does not overlap with the magnetic member and is formed as a portion of the housing facing the plurality of permanent magnets, or characterised in that: the magnetic member includes a plurality of slits provided in a circumferential direction, and wherein the magnetic force emitting region is formed as a portion of the housing corresponding to the plurality of slits of the magnetic member. a sheet stacker to stack at least one sheet; a sheet feed roller disposed at one side of the sheet stacker and to feed a sheet fed from the sheet stacker; a multi-feed prevention roller disposed to face the sheet feed roller and to prevent multi-feed of sheets fed from the sheet stacker; a magnetic torque limiter disposed coaxially with the multi-feed prevention roller; a hall sensor disposed at one side of the magnetic torque limiter and to detect a rotation and a rotational direction of the magnetic torque limiter; and a controller to control rotation of the sheet feed roller in a state in which the sheet feed roller and the multi-feed prevention roller are in contact with each other without a sheet and to determine a value indicative of usage corresponding to the multi-feed prevention roller according to a signal indicative of the detected rotation and rotational direction of the magnetic torque limiter output from the hall sensor, characterised in that the magnetic torque limiter comprises: a plurality of permanent magnets provided circumferentially on a rotation shaft of the multi-feed prevention roller; a housing to surround the plurality of permanent magnets; and a magnetic member provided on an inner circumferential surface of the housing and facing the plurality of permanent magnets, wherein a portion of the housing facing the hall sensor is provided with a magnetic force emitting region through which a magnetic force of each of the plurality of permanent magnets is radiated to an outside of the housing over an entire circumference of the housing to cause the detection of the rotation and the rotational direction of the magnetic torque limiter by the hall sensor, wherein the sheet feeding apparatus is further either characterised in that: a length of the magnetic member is smaller than a length of each of the plurality of permanent magnets, and wherein the magnetic force emitting region does not overlap with the magnetic member and is formed as a portion of the housing facing the plurality of permanent magnets, or a length of the magnetic member is smaller than a length of each of the plurality of permanent magnets, and wherein the magnetic force emitting region does not overlap with the magnetic member and is formed as a portion of the housing facing the plurality of permanent magnets, or characterised in that: the magnetic member includes a plurality of slits provided in a circumferential direction, and wherein the magnetic force emitting region is formed as a portion of the housing corresponding to the plurality of slits of the magnetic member. the magnetic member includes a plurality of slits provided in a circumferential direction, and wherein the magnetic force emitting region is formed as a portion of the housing corresponding to the plurality of slits of the magnetic member.