Method of and copying machine for copying originals in order on

Details Method of and copying machine for copying originals in order on Method of and copying machine for copying originals in order on

1989-03-09

1991-04-30

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355309, G03G 2100

Patent

active

050122967

ABSTRACT:
The invention described is a method of and machine for duplex copying images present in order on both sides of two original sheets in which, in a first cycle, an image of the first original page is applied twice and then an image of the third original page is applied twice to a separate blank receiving sheets.
Thereafter, in a second cycle, an image of the second original page is applied twice and then an image of the fourth original page is applied twice on the blank side of the returned receiving sheets which were already printed on one side. The two cycles are repeated for making further copies of the two original sheets printed on both sides.

REFERENCES:
patent: 4209249 (1980-06-01), Clark et al.
patent: 4453819 (1984-06-01), Wada et al.
patent: 4468114 (1984-08-01), Pels et al.
patent: 4639126 (1987-01-01), Bushaw et al.
patent: 4782363 (1988-11-01), Britt et al.

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