Photocopying – Projection printing and copying cameras – Detailed holder for original
Patent
1982-09-03
1984-04-03
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Detailed holder for original
271 6, 271 10, 271233, 271275, G03B 2762, G03B 2764
Patent
active
044404921
ABSTRACT:
A document transport for transporting document sheets over a copier platen and into a registration position thereon for copying with a single light reflective, flexible, unapertured and air impervious wide frictional movable belt providing a uniform light imaging background for the document sheet, having a selectably actuatable vacuum system for selectably applying a vacuum to a vacuum plenum overlying the vacuum belt above the platen, for lifting all but selected minor areas of the belt away from the platen and document toward the vacuum plenum when a vacuum is applied, but and for allowing the belt to drop into planar engagement with a document sheet on the platen over a much larger area of said belt when the vacuum is removed, and belt deforming rollers deforming the selected minor areas of the belt away from the vacuum plenum towards the platen for selective area driving of a document sheet on the platen with these deformed minor areas or protuberances of the belt when the vacuum is applied.
REFERENCES:
patent: 3087664 (1963-04-01), Streeter
patent: 3504908 (1970-04-01), Krueger
patent: 3937454 (1976-02-01), Colwill
patent: 4043665 (1923-08-01), Caldwell
patent: 4076233 (1978-02-01), Knight et al.
patent: 4286870 (1981-09-01), Silverberg
patent: 4298277 (1981-11-01), Silverberg
patent: 4314006 (1982-02-01), Lentz et al.
patent: 4353541 (1982-10-01), Parzygnat
patent: 4362380 (1982-12-01), Dragstedt
"Belt Energized Antiskew Rolls", Victor Castro-Hahn, Xerox Disclosure Journal, vol. 6, No. 6, Nov./Dec. 1981, p. 345.
Wintercorn Richard A.
Xerox Corporation
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