Photocopying – Contact printing – Light boxes
Patent
1991-02-13
1992-01-14
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355 75, 355311, G03G 2100
Patent
active
050814974
ABSTRACT:
A document registration guide as provided by mounting a retractable pattern bearing substrate beneath a glass document platen. The substrate operates in the manner of a window shade, presenting a plurality of document outlines which are visible to an operator during a pre-copy state. The operator can select the appropriate document outline pattern, and position the document to be exposed along the outline ensuring the required and proper registration for that document. At start of scan, the substrate is retracted out of the document exposure area and is returned to its initial position at the end of the copying cycle.
REFERENCES:
patent: 4415261 (1983-11-01), Yukawa et al.
patent: 4436402 (1984-03-01), Seimiya et al.
patent: 4595285 (1986-06-01), Miwa et al.
patent: 4600293 (1986-07-01), Watanabe
patent: 4721981 (1988-01-01), Rauen et al.
patent: 4783679 (1988-11-01), Anzai
Agarwal Vinod K.
Appel James J.
Durbin John A.
Grimley A. T.
Lee Shuk Y.
Xerox Corporation
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