Photocopying – Contact printing – Light boxes
Patent
1990-10-22
1991-12-03
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355271, 355277, 355319, 355326, 355328, 355 24, 355244, G03G 1514, G03G 1501
Patent
active
050703714
ABSTRACT:
Duplex toner images are created on a receiving sheet by forming first and second toner images on an image member. The first toner image is transferred to a first intermediate member and then to a second intermediate member. The second toner image is transferred to a first side of the receiving sheet. The receiving sheet is separated from the image member and the first toner image is transferred to the other side of the receiving sheet from the second intermediate member. With this apparatus, a straight paper path can be provided without reversing optics or electronics for forming one of the two toner images. Two toner images can also be combined into a single image on the second intermediate member, for example, two toner images of different color, and a third toner image placed on the first side of the sheet.
REFERENCES:
patent: 3940210 (1976-02-01), Donohue
patent: 4191465 (1980-03-01), Boase et al.
patent: 4194829 (1980-03-01), Cavagnaro
patent: 4251154 (1981-02-01), Russel
patent: 4428662 (1984-01-01), Day
patent: 4688925 (1987-08-01), Randall
patent: 4714939 (1987-12-01), Ahern et al.
Xerox Disclosure Journal, vol. 9, No. 1, Jan./Feb. 1984, Andrews, Ronald A., "Single Pass Duplex in Electronic Systems".
Eastman Kodak Company
Grimley A. T.
Smith Matthew S.
Treash, Jr. Leonard W.
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