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US 5,963,770 AGranted
Printing system
AssigneeXerox Corporation
InventorPaul W. Eakin
Life of this patent
Estimating the term…
Abstract
A printing system including three print engines. One of the print engines is non-operational while the other two print engines are operational. The non-operational print engine is redundant and only actuated in the event that one of the operational print engines develops a malfunction causing it to be non-operational. At that time, the previously non-operational print engine becomes operational. In this way, two print engines are continually in operation with one print engine being non-operational. This printing system significantly improves reliability and minimizes maintenance requirements.
Claims11
A printing system, including:
- a first print engine adapted to print information on either side of a sheet;
- a second print engine adapted to print information on either side of the sheet;
- and
- a third print engine adapted to print information on either side of the sheet;
- and
- a control system, in communication with said first print engine, said second print engine and said third print engine, said control system regulates said first print engine, said second print engine, and said third print engine so that said third print engine is non-operative in response to said first print engine and said second print engine being operative to print information on opposed sides of the sheet, said control system regulating said third print engine to be operative in response to either said first print engine or said second print engine being non-operative, said control system regulating said third print engine to print information on a side of a sheet opposed to the side of the sheet having information printed thereon by either said first print engine or said second print engine.
3 more elements
Dependencies are inferred from the claim text.