| 摘要 |
Signature printing with an automatic duplexing copier (10) by simultaneously presenting plural document sheets (F1, F2, etc.) to the imaging station (23) of the copier in a predetermined nonserial page order for producing a set of signature copy sheets (S1, S2, etc.) suitable for subsequent center-folding into signature sets. A normal serial set of document sheets is loaded into an automatic document re-ordering and presenting system (20) (associated with the copier) which automatically reorders that set of document sheets into a predetermined nonserial reordered page order for signature pair page order "two-up" copying. The pairs of automatically reordered document sheets are preserted automatically to the imaging station of the copier to be copied in the reordered page order to provide collated page order signature sets automatically with the copier for on-line center-folding and finishing without requiring any manual reordering of either the document sheets or the signature copy sheets. The automatic re-ordering includes automatic 180 DEG rotation of alternate pairs of simplex document sheets to provide proper orientation of the document pages for the automatic duplex copier. The document sheets are either automatically separated into two stacks for two document sheets to be presented simultaneously lengthwise (short-edge-first) in parallel to one side of the imaging station (see Fig. 3a), or reordered into one stack for sideways (long-edge-first) presentation from an orthogonal direction (see Fig. 3b). |
