Paper thickness detecting device
AssigneeLG N-Sys Inc.
InventorKyung-Hoon Kim
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention relate to an apparatus (i.e. an automatic teller machine) comprising an optical sensor. The optical sensor is configured to detect thickness of paper. Advantages of some embodiments of the present invention are that by determining a thickness of paper, it can be confirmed that two pieces of paper are not stuck together. For example, if two substantially identical pieces of paper are stuck together, then their thickness will be approximately twice the thickness of a single sheet. Accordingly, upon detection of two or more sheets of paper stuck together, a device, that automatically handles paper, may cause the sheets of paper to be separated.
Claims25
An apparatus comprising an optical sensor configured to detect thickness of paper.
A method comprising detecting thickness of paper at an optical sensor.
An apparatus comprising:
- an optical detector;
- a means for changing quantity of light received by the optical detector to detect thickness of paper.
A thickness detecting apparatus comprising:
- a conveyance unit having a conveyance roller and an idle roller for conveying a medium;
- a displacement transforming unit for transforming a displacement of the idle roller to a rotational displacement depending on the thickness of the medium when the medium passes between the conveyance roller and the idle roller;
- a rotational displacement detecting unit having a detector for detecting a rotational displacement by changing a quantity of light according to the rotational displacement;
- and
- a thickness calculating unit for calculating the thickness of the medium from the rotational displacement detected by the rotational displacement detecting unit.
A rotational displacement detecting apparatus comprising:
- an input unit for receiving a rotational displacement;
- a rotational shaft fixedly installed at the rotational shaft and rotated according to the rotational displacement of the rotational shaft;
- and
- a rotational displacement detecting unit installed at a free end of the rotational member and detecting a rotational displacement by changing quantity of light according to the rotational displacement.
A thickness measuring apparatus comprising:
- a conveyance unit having a conveyance roller and an idle roller for conveying a medium;
- a rotary arm of which one end is fixedly installed at a rotational shaft of the idle roller and the other end is fixedly installed at a transformation rotational shaft installed parallel to a rotational shaft of the idle roller, so as to rotate the transformation rotational shaft according to displacement of the rotational shaft of the idle roller caused when the medium passes the conveyance roller and the idle roller;
- a rotational member fixedly installed at the transformation rotational shaft so as to be rotated together with the transformation rotational shaft;
- a first light transmission member fixedly installed at a free end of the rotational member and moved according to rotation of the rotational member;
- a second light transmission member fixed to be overlapped at some portion with the first light transmission member when the first light transmission member is moved;
- a light emitting unit for irradiating light to the first light transmission member and the second light transmission member;
- a light receiving unit for detecting a quantity of light irradiated by the light emitting unit which is changed as the first light transmission member and the second light transmission member are overlapped;
- a rotational displacement calculating unit for calculating a rotational displacement from the quantity of fight detected by the light receiving unit;
- and
- a thickness calculating unit for calculating a thickness of the medium from the rotational displacement calculated by the rotational displacement calculating unit.
Dependencies are inferred from the claim text.