Image forming apparatus

Details Image forming apparatus Image forming apparatus

1991-09-06

1992-09-22

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355200, 355206, 355208, 355311, 355314, 355319, 355321, 271186, 271225, 271256, G03G 2100

Patent

active

051501678

ABSTRACT:
An image forming apparatus having a plurality of image forming units and a sheet transporting unit for transporting sheets discharged from an arbitrary one of the image forming units to a discharge portion of its own or to that of other image forming unit. When one of the image forming units is incapable of continuous operation during the execution of an operation thereof, another image forming unit is operated in place thereof which feeds recording sheets of the same size as those of the former image forming unit and forms images with toner of the same color as that of the former image forming unit, and the image bearing sheets discharged from the latter image forming unit are discharged onto the same discharge portion as that of the former image forming unit.

REFERENCES:
patent: 4167322 (1979-09-01), Yano et al.
patent: 4591884 (1986-05-01), Miyamoto et al.
patent: 4707713 (1987-11-01), Ayata et al.
patent: 4745490 (1988-05-01), Shimizu et al.
patent: 4797706 (1989-01-01), Sugishima et al.
patent: 4972236 (1990-11-01), Hasegawa
patent: 4998195 (1991-03-01), Ito et al.
patent: 5014184 (1991-05-01), Ito et al.
patent: 5038273 (1991-08-01), Ito et al.

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