Sheet feeder for use in sheet-fed printing press

Details Sheet feeder for use in sheet-fed printing press Sheet feeder for use in sheet-fed printing press

1989-04-11

1991-03-05

Schacher, Richard A.

Sheet feeding or delivering

Delivering

With transfer means between conveyor and receiver

271 82, 271176, B65H 2954

Patent

active

049971808

ABSTRACT:
A sheet feeder in a sheet-fed printing press includes a detector 1 disposed adjacent to a feed portion of a paper feed or transfer cylinder 2 for detecting an improperly fed sheet of paper, and a gripper opening mechanism 6 actuatable for engaging a cam follower 13 to open a gripper 14 to release the improperly fed sheet of paper from the cylinder. A sheet discharge mechanism 16 has a sheet discharge roller 17 movable toward the cylinder for gripping therebetween the released sheet, and a stripper 18 movable toward the cylinder for stripping the improperly fed sheet and discharging it along a paper guide. An actuator 4.5 is connected to the detector for actuating the gripper opening mechanism and moving the sheet discharge roller and the stripper in response to the detection by the detector of the improperly fed sheet of paper.

REFERENCES:
patent: 3046009 (1962-07-01), Hartel
patent: 4634113 (1987-01-01), Matsuda

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