Photocopying – Projection printing and copying cameras – Detailed holder for original
Patent
1975-03-26
1977-08-23
Braun, Fred L.
Photocopying
Projection printing and copying cameras
Detailed holder for original
271243, 271276, 355 3R, G03B 2762, G03B 2764
Patent
active
040436659
ABSTRACT:
Improved document handling for a xerographic copier with automatic feeding onto, and ejection of documents from, a full size conventional document copying platen is provided by a vacuum belt system in a platen cover unit. The document support surface of the vacuum belt is spaced slightly above the platen for low friction document movement, yet maintained within copying focus. This document support and background surface of the belt is smooth, planar and continuous and stationary during copying so as to provide document flattening and allow document copying on the platen by the conventional stationary document copying optics. Book copying or manual copying can be provided on the same platen by pivotal removal of the platen cover unit away from the platen. A document pre-registration and skew-correction system is disclosed in which over-platen registration is not required. A pivotal system is also disclosed for limited lifting of the vacuum belt system for document ejection assistance.
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Braun Fred L.
Xerox Corporation
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