System for segregating purge sheets and continued printing

Details System for segregating purge sheets and continued printing System for segregating purge sheets and continued printing

1990-08-30

1991-09-03

Moses, R. L.

Photocopying

Contact printing

Light boxes

355314, 355 77, 271258, G03G 1500

Patent

active

050458817

ABSTRACT:
In copying or printing, proper printed copy sheets generated from the printing operation may be selectably operator directed to various different copy sheet output compiling stations, such as a stacking tray or a finisher compiler. Those copy sheets desired to be purged rather than provided as finished copies {called purge sheets below} are directed to a particlar designated such station for operator removal and disposal. Preferably this designated purge station is a readily operator accessible existing top tray. In this system, reduced printing delays are provided by continuing the printing process as long as the proper copy sheets are selectably directed to a copy sheet output compiling station which is not the same tray or station into which the purge sheets have been directed in the same printing operation, or, as long as the proper copy sheets will not be stacked on top of the purge sheets in that same tray. The printing operation of the copy sheets is automatically stopped to prevent such intermixing of the purged sheets with the proper copy sheets in the same output tray. However, this interrupted printing operation can then resume in response to sensing that all the sheets in that tray have been removed, which may be directed.

REFERENCES:
patent: 3778051 (1973-12-01), Allen et al.
patent: 3936180 (1976-02-01), Willard et al.
patent: 4231567 (1980-11-01), Ziehm
patent: 4655582 (1987-04-01), Okuda et al.
patent: 4684235 (1987-08-01), Kohimoto et al.
patent: 4750020 (1988-06-01), Ishizu et al.
patent: 4758860 (1988-07-01), Takayanagi et al.
patent: 4782363 (1988-11-01), Britt et al.

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