Forms stacker jam detector

Details Forms stacker jam detector Forms stacker jam detector

1987-11-05

1989-03-07

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Control means energized in response to activator stimulated...

Responsive to work material, the product or means engaging...

493 15, 493 23, 493 27, 493 30, 493320, 493410, B65H 45101, B65H 45109

Patent

active

048102393

ABSTRACT:
A forms jam detector for a high-speed line printer having control electronics, a forms guide and a pair of paddlewheel assemblies for fan-folding continuous paper forms fed from the forms guide in a stack within a forms stacker assembly of the printer includes an emitter for projecting a beam of electromagnetic radiation, a receiver coupled to the control electronics and adapted to receive the projected beam, and a member for interposing between the emitter and the receiver. When a jam causes a portion of the paper forms to be forced upwardly from the stack, that portion urges the interposing member upward also to block the projected beam and disable the printer.

REFERENCES:
patent: 4213601 (1980-07-01), Cattorini et al.
patent: 4227683 (1980-10-01), Spangler et al.
patent: 4597748 (1986-07-01), Wolf

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