Jam detecting device

Abstract

Abstract PURPOSE: To obtain the capationed device monitoring jamming of paper in the course of transfer of a continuous sheet by providing guide members for transferring a sheet having a guide-member position slippage sensor on the sheet-feeding side of a pair of rollers. CONSTITUTION: On the sheet-feeding side of a pair of pressing rollers 21 is provided a fixed plate 24 to which the guide members 22 and 22' for transferring the sheet is fixed, and the fixed plate 24 is provided with a U-shaped groove 26 and a hole 27 piercing through to the bottom of the groove, in the hole 27 a spring 28 is located intermediately, while an engagement pin 29 fixed to the side of a frame 19 is engaged with the groove 26, and by the repelling force of the spring 28, the guide members 22 and 22' are pressed to contact with the rollers 21 through the intermediary of the fixed plate 24. Moreover, on the side surface of the fixed plate 24 is provided a mark 25 for detecting the slippage of position of guide members and in this position a photoelectric tube 23 detecting the slippage of position of the guide members 22 and 22' is provided on the frame 19. Furthermore, the guide members 22 and 22' are provided with windows 31, from which brushes 32 for rejecting electricity are projected into a paper transfer guide passage 33. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Hirotsugu Kawasaki

Bibliographic Details