Mimeographic printing machine having sheet jamming detector

Details Mimeographic printing machine having sheet jamming detector Mimeographic printing machine having sheet jamming detector

1995-03-01

1996-08-13

Funk, Stephen

Printing

Stenciling

Rotary machines

101484, 27125801, 27125802, B41L 1304, B41F 3306

Patent

active

055445802

ABSTRACT:
A mimeographic printing machine including: a pair of first and second sheet supplying rollers, the first sheet supplying roller being movable into and out of contact with the second sheet supplying roller, the first and second sheet supplying rollers clamping a printing sheet when the first sheet supplying roller touches to the second sheet supplying roller, and the first and second sheet supplying rollers being rotatable to convey the printing sheet; a rotary cylindrical drum having a tubular wall on which a stencil paper is wound; a pushing device for pushing the printing sheet conveyed by rotating the first and second sheet supplying rollers against the stencil paper wound on the rotary cylindrical drum in order to perform a mimeographic printing operation; a jamming detector for detecting abnormal conveyance of printing sheets in a printing-sheet conveying path; a preventing device for preventing the first sheet supplying roller from approaching the second sheet supplying roller; and a controller for activating the preventing device when the jamming detector detects the abnormal conveyance of the printing sheet in the printing-sheet conveying path.

REFERENCES:
patent: 4237466 (1980-12-01), Scranton
patent: 4628813 (1986-12-01), Hasegawa et al.
patent: 4630815 (1986-12-01), Petersen et al.
patent: 5081924 (1992-01-01), Ohinata
patent: 5280322 (1994-01-01), Kono
IBM Technical Disclosure Bulletin vol. 18, No. 10 "Articulated Roll and Document Gate Mechanism" Baumberger et al. p. 3199 Mar. 1976.

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