Adjustable Mirror Wall for Monitoring the Level of Sheets in a Stack Abutting the Wall
Original Publication Date: 1981-Sep-01
Included in the Prior Art Database: 2005-Feb-12
The present structure provides a paper feed hopper having an adjustable mirror wall which shows the level of paper in the hopper. This is accomplished by a pair of reflective prisms which bend the image of the side of the paper stack into the horizontal plane so that the level of the paper stack may be readily observed by the operator. Paper stack 10 is supported on platform 11 having walls 12 which abut the paper stack. One wall which may be made of plastic material has a pair of projecting transparent prisms 13 and 15 having surfaces on which the images of the side of the paper stack appear. Marks 16 indicate the paper level in the stack.