Patent ID: 8807557
Filing Date: 2014-08-19
Classification: B65H

Abstract:
1. A media size detection device for detecting a size of a media, comprising: a media tray comprising a bottom plate; a width adjuster and a length adjuster located on an upper surface of the bottom plate, the width adjuster being movable in accordance with a widthwise dimension of the bottom plate, the length adjuster being movable in accordance with a lengthwise dimension of the bottom plate, wherein the bottom plate together with the width adjuster and the length adjuster defines a media placing area for placing the media; a first magnetic member attached to the width adjuster; a second magnetic member attached to the length width adjuster; a plurality of magnetic sensors arranged on a lower surface of the bottom plate and adapted to generate a plurality of position signals, wherein each of the plurality of position signals is adapted to indicate whether one of the plurality of magnetic sensors detects any of the first magnetic member and the second magnetic member or not; and a logic unit adapted to determine the size of the media according to the plurality of position signals generated by the plurality of magnetic sensors; wherein the plurality of magnetic sensors comprises a first magnetic sensor, a second magnetic sensor, a third magnetic sensor, and a fourth magnetic sensor, the first magnetic sensor and the second magnetic sensor are arranged in a first line in accordance with the widthwise dimension of the bottom plate and adapted to sense the first magnetic member, the third magnetic sensor and the fourth magnetic sensor are arranged in a second line in accordance with the lengthwise dimension of the bottom plate and adapted to sense the second magnetic member.