Offset stacker
AssigneeGradco (Japan) Ltd.
InventorsPeter M. Coombs, Bradford Billings
Life of this patent
Estimating the term…
Abstract
A self-contained offset stacker tray assembly is operable in conjunction with the sheet output of a host printer or copier to receive sheets from the host machine and deposit the sheets in offset sets. The assembly includes a supporting base for a frame structure reciprocable transversely of the direction of sheet infeed from the host and containing a receiver tray, infeed rolls to supply sheets to the trays, a rotary cam mechanism for shifting the frame assembly relative to the output from the host machine and the receiver tray being vertically movable within the frame structure and biased upwardly by counter balancing springs to be moved downwardly as the weight of the sheets in the tray increases.
Claims6
An offset stacker tray assembly for receiving sheets from a sheet output of a printer or copier comprising:
- a base support adapted to be positioned adjacent to the sheet output, a frame structure including vertical side walls and mounted on said base support for reciprocation transversely of the direction of delivery of sheets from said sheet output, a receiver tray supported by said frame structure between said side walls for vertical movement and adapted to receive sheets supplied from said sheet output, means for counter balancing the weight of sheets of paper on said receiver tray normally maintaining said receiver tray in an upper position between said side walls of said frame structure and permitting downward movement of the receiver tray responsive to the weight of sheets of paper thereon, and means coacting between said base support and said frame structure for shifting said frame structure transversely as aforesaid, sheet feeding means carried by said frame structure and extended between said side walls for transverse movement therewith for feeding sheets received from said sheet output to said receiver tray, whereby reciprocation of said frame structure causes sheets fed to said tray by said sheet feeding means to be disposed on said receiver tray in offset relation.
Dependencies are inferred from the claim text.