Sheet supplying apparatus

Details Sheet supplying apparatus Sheet supplying apparatus

1988-04-13

1991-10-15

Graham, Matthew C.

Sheet feeding or delivering

Feeding

Multiple supplies

271155, G03G 1500

Patent

active

050567691

ABSTRACT:
A sheet supplying apparatus comprising a plurality of sheet supply stages each for storing a stack of sheets therein, each of the sheet supply stages comprising a vertically movable sheet support member capable of supporting a stack of sheets thereon, the sheet supply stages having a predetermined order of priority, wherein the sheet support member associated with each of the sheet supply stages is driven for movement to a position in which the uppermost one of the sheets supported thereon reaches a predetermined level and wherein, out of the sheet supply stages, a particular sheet supply stage is selected which has a stock of sheets stored therein and which is higher in the order of priority than a sheet supply stage also having a stock of sheets stored therein, the movement of the sheet support member being enabled after the particular sheet supply stage is selected through detection of the presence or absence of a sheet stored in each of the sheet supply stage.

REFERENCES:
patent: 4332375 (1982-06-01), Tsubo
patent: 4386769 (1983-06-01), Ito et al.
patent: 4422631 (1983-12-01), Sugizaki
patent: 4477178 (1984-10-01), Furuichi et al.
patent: 4530494 (1985-07-01), Saitoh et al.
patent: 4535463 (1985-08-01), Ito et al.
patent: 4589765 (1986-05-01), Perun et al.

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