Sheet feeding or delivering – Delivering – To receiver for pack of sheets
Reexamination Certificate
1999-01-26
2001-09-25
Olszewski, Robert P. (Department: 3651)
Sheet feeding or delivering
Delivering
To receiver for pack of sheets
C414S788900, C414S790100, C271S207000, C271S221000, C271S238000
Reexamination Certificate
active
06293543
ABSTRACT:
BACKGROUND OF THE INVENTION
In the prior art there are extant various modes and systems for facilitating the stacking of sheets on or in a receiving tray, including the following prior art.
Lawrence U.S. Pat. No. 5,649695, granted Jul. 7, 1997 discloses a continuous finishing apparatus for copiers and printers in which sheets exiting the host machine are supported at their trailing edge on a retractable shelf and on their leading ends on a mechanism which is laterally shiftable. The shelf is retracted and the laterally shiftable mechanism is opened to allow the sheets to fall upon a stacker, after a set of the sheets has been finished.
In the pending application of Coombs, Ser. No. 09/078,202, filed May 14, 1998, commonly owned herewith, sheet finishing apparatus is shown having vertically spaced pairs of trays which are laterally pivotable to allow the sheet to progressively move downwardly to a stacker during the finishing of sheets by stapling or binding.
In essence, the state of the prior art appears to be that it is well known to support sheets and accumulate sets of sheets for binding or stapling on devices which finish the sets of sheets and then move the sheets to a stacker or receiver, as more particularly shown in Hiroi, et al U.S. Pat. No. 5,385,340, granted Jan. 31, 1995, wherein the sheets are arranged in a stack supported partially on a stacker and partially on a ledge from which the finished sets of sheets are pushed so as to rest entirely on the stacker.
SUMMARY OF THE INVENTION
The present invention involves providing a sheet receiving apparatus which is applicable to various stackers of the type having a stacker tray progressively vertically downwardly movable as the sets are deposited on the stacker tray, as is customary in the art of stacking.
The receiving apparatus of the present invention is adapted to receive sheets progressively fed from the outlet from a copier or printer upon a pair of horizontally shiftable support plates on which the sheets may be jogged into side edge alignment, and, in one form of the invention, stapled, but in any event, being dropped onto the usual stacker tray, either in a uniform vertically disposed stack or in a stack in which the respective jobs have been offset.
In particular, an object of the invention is to provide a universal sheet receiving apparatus which may be applied to a variety of stacking bases and which functions to receive, align and deposit the sheets upon the sheet stacker, either stapled or not stapled.
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patent: 6090030 (2000-07-01), Rogers
Gradco (Japan) Ltd.
Lee, Jr. Newton H.
Olszewski Robert P.
Ridley Richard
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