Patent ID: 8590887

Claim:
An automatic teller machine (ATM) comprising: a medium transfer portion to transfer paper media; a carrier position adjustment portion rotatably mounted at a rear end of the medium transfer portion and comprising: a medium carrier formed with a stacking space and comprising: a first carrier portion, and a second carrier portion, the first carrier portion and second carrier portion approach each other; a medium carrier mounted in the carrier position adjustment portion to receive and stack the paper media, the paper media colliding with an inner part of the medium carrier and falling to be orderly stacked in the stacking space; a sheet roller portion mounted between the medium carrier and the carrier position adjustment portion to rotate about a rotational axis to transfer each of the paper media on the medium transfer portion into the medium carrier by rotation of the sheet roller portion, the sheet roller portion exerting greater friction force on a middle area of each of the paper media than an outer area of each of the paper media when placing each of the paper media in the medium carrier, the sheet roller portion comprising: a middle sheet roller of which at least a part is brought into contact with a middle part of the paper media over a first contact area when placing the paper media in the medium carrier, and an outer sheet roller of which at least a part is brought into contact with an outer part of the paper media over a second contact area smaller than the first contact area; wherein each of the middle sheet roller and the outer sheet roller comprises: a roller body connected to a rotational axis and rotated by rotation of the rotational axis, a plurality of sheet members extending in a radial direction from an outer surface of the roller body, being arranged at uniform intervals along a circumference of the roller body, to be brought into actual contact with the paper media, wherein a length of a sheet member of the middle sheet roller is greater than a length of a sheet member of the outer sheet roller; and a support portion comprising: a support body, and a plurality of support ribs extending from the support body, at least one of the plurality of support ribs coming into contact with a part of an edge of each of the paper media before other support ribs and operating as an intersection point about which each of the paper media is rotated for alignment in the medium carrier so that the at least one of the plurality of support ribs and the other support ribs support the edge of the paper medium when placing each of the paper media in the medium carrier.