Patent ID: 6135384
Filing Date: 2000-10-24
Classification: B41J,B65H

Abstract:
A device for detecting a near end state of a roll of paper, comprising:holding means for rotatably holding a roll of paper so as to allow paper to be drawn out from the roll of paper, the holding means having a standing portion against which the roll of paper rests;a pivot device built into said holding means, the pivot device being movable between a first position and a second position, the pivot device having a recess with a step portion;elastic member to resiliently bias said pivot device to the second position;said pivot device being moved to said first position against biasing force of said elastic member by the weight of the roll of paper when the roll of paper is held in said holding means;in the case where the roll of paper is coreless, said pivot device being moved from the first position to the second position by the bias force of the elastic member when the weight of the roll of paper is reduced to a predetermined value by the drawing out of the paper therefrom;in the case where the roll of paper has a core, said pivot device being moved from the first position to the second position by the bias force of the elastic member when the diameter of the roll of paper is reduced to a predetermined value, by the drawing out of the paper therefrom, so the roll of paper is received in the recess of said pivot device; anda detector to detect when said pivot device moves from the first position to the second position.