Medium separating mechanism

Abstract

The invention provides a medium separation mechanism which can process suitable adjustment for superposition amount of a gate, but cannot be influenced by a launching position of the medium, medium state in the gate and length differences of the medium. The medium separation mechanism makes the medium process to separate one by one via a superposition part, namely the gate formed by a feeding roller (3) and a gate roller (4). When a cumulative separating folio of the medium reaches a preestablished reference folio, the medium separation mechanism calculates a superposition transportation or adhesion refusal generation rate according to the cumulative separating folio, and times of generating the superposition transportation or adhesion refusal detected via the superposition transportation or adhesion detection unit before reaching the cumulative separating folio. When the calculated superposition transportation or adhesion refusal generation rate is more than a first reference value used for adjusting the superposition amount of the gate, the medium separation mechanism makes use of a turning motor (11) to move the gate roller (4) so as to increase and adjust the superposition amount of the gate.

Description

technical field [0001] The present invention relates to a medium separation mechanism that separates paper-like media sent out from a medium storage unit one by one by using a feed roller and a gate roller. Background technique [0002] As such a medium separation mechanism, the medium separation mechanism mounted, for example as one function of an automatic transaction apparatus, in the banknote processing facility which performs deposit and withdrawal processing of banknotes etc. is known. [0003] The medium separation mechanism in this banknote processing equipment is such that the paper-like medium stored in the banknote storage section, etc. The feed roller and the gate roller pass between them, thereby separating them one by one. [0004] The feeding roller and the gate roller are arranged in a sleeve shape in which a part of the outer circumference overlaps with each other. The overlapped part is called the gate for passing the banknotes. When the overlapping amount...

AI Technical Summary

Problems solved by technology

[0010] However, in the prior art described above, the generation of the skew of the medium is detected and corrected. Therefore, when the skew does not occur, the overlapping amount of the gate changes to cause overlapping conveyance (overlapping state) and sticking of the medium (at a rate higher than normal). There is a problem that the adjustment of the overlapping amount cannot be performed in the state of conveying at intervals with small intervals)

[0011] Therefore, as a countermeasure, a media separator is proposed, which detects the time from when the pick-up roller sends out the media to when the media passes through the gate formed by the feed roller and the gate roller. This is to set an appropriate overlapping amount, but in this case, if the media is not always sent from the same position, it cannot be judged whether the passing time is long due to a large amount of overlapping, or the long passing time is caused by the position where the media is sent out far away. Therefore, for example, depending on the state of storage in the paper storage unit, even if the position where the media is sent out is long and the transit time is long, the amount of overlapping is recognized as being large, and there is a problem that the amount of overlapping is adjusted to be small by mistake.

[0012] In addition, there is also a state in which the medium is slow due to a large amount of overlapping of the gate (the gate is tight) and a state in which the medium beam enters the gate but is slow due to a small amount of overlapping (the gate is loose), resulting in a wrong process. adjustment problem

[0013] In addition, when media with different lengths in the conveyance direction are mixed and stored, such as foreign banknotes, the position of the leading end of the media may deviate due to the length difference, so it is not clear whether the long passage time is due to the large amount of overlap or the It takes a long time for the front end of the medium to reach the gate, which makes it impossible to judge whether the amount of overlapping can be reduced

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