| 摘要 |
<p>For use in a xerographic copier/duplicator machine in which paper is fed from a continuous roll and cut to the desired length within the machine, an arrangement for monitoring the movement of the paper and also for providing a visual display of the width of the roll. The paper is caused to continuously move past a sensing station constituting a number of deflectable leaves. A suitable logic circuit coupled to the leaves determines the width of the paper, and provides a warning signal when the paper is exhausted or when it is not being properly fed. The warning signal may be used to halt the operation of the machine so as to prevent jamming or other malfunction of the machine.</p> |
