Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1992-03-25
1993-10-26
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356 1, G01N 2186
Patent
active
052568849
ABSTRACT:
A method and apparatus for the alignment of paper stacks in a printing press provides essentially uninterrupted printing through the transfer of supply of sheets of paper from a first stack of papers to a second stack of papers by reducing mechanical strain in the control and operation of the sheet feeder of the printing press.
REFERENCES:
patent: 4266875 (1981-05-01), Bodlaj
patent: 4839526 (1989-06-01), Pryor
patent: 4847510 (1989-07-01), Douglas
patent: 4874956 (1989-10-01), Kato et al.
patent: 4916302 (1990-04-01), Sorimachi
Bergann Ludwig
Buck Helmut
Heidelberger Druckmaschinen A.G.
Ljungman Nils H.
Nelms David C.
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