JPS6457113A - Detecting apparatus of thickness of carried paper sheet - Google Patents

Abstract

PURPOSE:To obtain a small-sized detecting apparatus which detects a bank note mended with a cellophane tape, for instance, without fail in a stable manner, by bearing a detection roller axially by means of a rotatable detection lever and also by fitting a detection body to the detection lever. CONSTITUTION:A detection roller 4 is borne axially by a rotatable detection lever 3, while a spring 7 pressing the roller 4 on a reference roller 2 and a detection body 23 are fitted to the lever 3, and the displacement of the detection body 23 accompanying the rotation of the lever 3 is detected by means of a detecting element 10. Thereby the amount of displacement of the roller 4 to the roller 2 is detected. When a paper sheet P proceeds between the rollers 2 and 4, according to this constitution, the roller 4 is displaced to the roller 2 in accordance with the thickness of the sheet. Meanwhile the lever 3 rotates, and with this rotation, the thickness of the paper sheet P is detected through the detection body 23 and the element 10. Since the lever 3 provided is one according to this constitution, an error in thickness detection is reduced and the pressing force of the roller 4 on the paper sheet is also reduced, which enables the accurate detection of the thickness and also results in the reduction of the cost. Since the span of the lever 3 is shortened, in addition, a moment of inertia can be reduced and a follow-up property and responsiveness can be enhanced.