Sheet circulation in a duplex printer

Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means

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Details

3461531, 355319, 355321, 271186, G03G 1500

Patent

active

049281283

ABSTRACT:
In a duplex printer (or copier) 10 with a copy sheet output path 92, and a connecting duplexing path 94 for returning copy sheets to be imaged on their opposite sides, and at least one removable cassette copy sheet tray 70 insertable into an opening in the printer, normally providing for loading copy sheets, the cassette 70 has a top cover member 100 which provides a lower guide member for a substantial portion of the duplexing path 94 for guiding copy sheets over the top of the cassette without restacking therein, and the printer has a fixed baffle arrangement 102 positioned to overly the cover member 100 to provide a mating upper guide member when the cassette 70 is inserted into the printer so that a copy sheet being duplexed is guided between this fixed baffle 102 and the top cover member 100 of the cassette to continue on past the cassette in the duplexing path, but when the cassette is removed, a substantial portion of the duplexing path is opened and exposed for recovering copy sheets therefrom. The duplexing path also includes duplex feed rollers 90 in the printer adjacent the cassette for feeding copy sheets over the top cover member of the cassette without requiring any feeder in the cassette.

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