Sheet refeeding device for use in printing apparatus having a ti

Details Sheet refeeding device for use in printing apparatus having a ti Sheet refeeding device for use in printing apparatus having a ti

1993-06-07

1994-09-20

Olszewski, Robert P.

Sheet feeding or delivering

Delivering to stack and feeding therefrom

With sheet sensor for selective location

271110, 271160, B65H 522

Patent

active

053482816

ABSTRACT:
A recording sheet feeding device for use in an image forming machine, in which a plurality of sheets on which a first image has been recorded are successively fed from a sheet stacker for a second image to be formed, provided with a sheet pressing mechanism above the stacker which takes a pressing or a non-pressing position with respect to sheets on the stacker. While sheets are being conveyed to the stacker, a pressing operation on the sheets is conducted by driving the mechanism at least twice. Sheet feeding from the stacker is started after the first pressing operation of the mechanism. A feeding timing of the first sheet to be fed after a second pressing operation is delayed compared with a feeding timing of other sheets. In another structure, a periodical pressing operation is conducted each time a predetermined number of sheets are conveyed into the stacker and feeding is started when a sheet preceding by a fixed number from the last sheet in a set number of sheets in the first image forming operation is conveyed into the stacker.

REFERENCES:
patent: 5020788 (1991-06-01), Hatano et al.
patent: 5165677 (1992-11-01), Shinada
patent: 5169135 (1992-12-01), Hamanaka et al.
patent: 5186446 (1993-02-01), Saeki et al.
patent: 5219156 (1993-06-01), Mori

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