Batch mode duplex printing

Details Batch mode duplex printing Batch mode duplex printing

1989-07-19

1990-04-17

Grimley, A. T.

Photocopying

Contact printing

Light boxes

271291, 271301, 355 24, 355308, G03G 2100

Patent

active

049184903

ABSTRACT:
A system for printing collated sets of duplex copy sheets from a multipage job set of electronically re-orderable page images sent electronically to the printer in ascending serial page order (preferably for a printer having a trayless duplexing buffer loop path for recirculating a small number of copy sheets imaged on one side back to be imaged on their opposite sides), by sequentially electronically dividing the multipage job set into batches as the page images are being received, with consecutive batches containing page images in ascending serial page order, with each batch containing a small number of page images approximately twice the copy sheet length of the trayless duplexing path, and reordering the page images within each batch for collated duplex printing utilizing the duplexing buffer loop, and printing the copy sheets one batch at a time, printing the first sides of one batch of copy sheets with alternate pages of one page image batch and then printing the other sides with the remaining page images of that one batch, prior to printing any page images from any other batch, and consecutively repeating this process for subsequent batches to produce a collated duplex copy set from the multipage job set. If the printer copy sheet output is face down, all the even page images of one batch are printed, then its odd page images, then the even page images of the next batch, etc.

REFERENCES:
patent: 4009254 (1978-07-01), Andrews et al.
patent: 4116558 (1978-09-01), Adamek et al.
patent: 4348101 (1982-09-01), Schonfeld et al.
patent: 4453841 (1984-06-01), Bobick et al.
patent: 4488801 (1984-12-01), Gibson
patent: 4607948 (1986-08-01), Naito
patent: 4699503 (1987-10-01), Hyltoft
patent: 4806979 (1989-02-01), Tokoro et al.
patent: 4825245 (1989-04-01), Fukae et al.
patent: 4834360 (1989-05-01), Acquaviva

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