Patent ID: 9721198
Date: 2017-08-01
CPC Classifications: G06K,H04N

Claim:
1. An external security paper detection unit, comprising: a paper stack unit in which sheets of paper are stacked; a paper feed unit for feeding the paper stacked in the paper stack unit; a security paper detection unit for detecting whether moving paper is security paper; a unit controller for normally supplying the moving security paper to a manual feed tray if the paper feed unit operates and a security paper detection signal is input from the security paper detection unit; a paper movement detection unit for detecting whether paper is being fed; and a paper movement division unit for supplying security paper to the manual feed tray if the moving paper is security paper and for ejecting the moving paper if the moving paper is not security paper, wherein the unit controller is configured to: control the security paper detection unit so as to be activated if a paper detection signal is input from the paper movement detection unit; control the paper movement division unit so as to supply the moving paper to the manual feed tray if a security paper detection signal is input from the security paper detection unit; and generate a warning alarm and simultaneously control the paper movement division unit so as to eject the moving paper if a paper feeding completion signal is input from the paper movement detection unit but the security paper detection signal is not input from the security paper detection unit.