Sheet feed apparatus and cartridge therefor

Sheet feeding or delivering – Feeding – Pack holders

Patent

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Details

271157, 271162, 271126, 221198, B65H 108

Patent

active

048303542

ABSTRACT:
A top-sheet feeding apparatus having an automatically elevating stack support tray (100) to keep the top sheet of the stack (5) in operative contact with sheet feed mechanism (10). An upwardly projecting member (2) is present on the tray. The stack of sheets is provided in a cartridge (3) which simplifies the change over of throughput material and reduces the risk of damage and contamination both during handling and storage. The cartridge (3) comprises a generally enclosed rectangular container (4) holding the stack of sheets (5). The container has three openings as follows: (i) in its top face (6b) a cut out portion (9) exposing a portion of the top sheet to permit engagement by the sheet feed mechanism (10), (ii) in a side face (6c) a slot (11) through which sheets can be fed out from the top of the stack, and (iii) in bottom face (6a) an aperture (7) slightly larger than the projecting member (2). The cartridge (3) also comprises a vertically movable plate (8) for supporting the stack (5). The plate (8) is disposed within the container (4) adjacent the bottom face (6a) and extends over the aperture (7) therein such that the block (2) of the elevating tray (100) bears against the underside of plate (8) to raise the plate and the stack, thus maintaining the top sheet of the stack in operative contact with the sheet feed mechanism (10).

REFERENCES:
patent: 2391125 (1945-12-01), Carpenter
patent: 3635468 (1972-01-01), Suzuki
patent: 3758105 (1973-09-01), Okamoto
patent: 3767188 (1973-10-01), Rosenberg, Jr. et al.
patent: 3919972 (1975-11-01), Komori et al.
patent: 4248525 (1981-02-01), Sterrett
patent: 4390175 (1983-06-01), Takahashi
patent: 4466604 (1984-08-01), Kishimoto et al.
patent: 4504053 (1985-03-01), Shiozawa
patent: 4555105 (1985-11-01), Wyatt
patent: 4569587 (1986-02-01), Miyoshi
patent: 4605214 (1986-08-01), Hanning et al.

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