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This article describes a bidirectional dual station matrix printer in which both sides of sheets of paper are printed upon.
English (United States)
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Bidirectional Dual-Station Printer
This article describes a bidirectional dual station matrix printer in which both
sides of sheets of paper are printed upon.
The drawing shows the paper feed is such that the paper is fed past two print
stations. Print head 1 prints on one side of the sheet, and print head 2 on the
Both print heads are bidirectional, and print head 2 prints 'upside down'.
The paper feed path may be such that both print heads start at the top of a
page simultaneously, although the printer controls ensure that print head 2 prints
the relevant even numbered pages on the back of the relevant odd numbered
pages. Thus print head 1 may be printing page 5, while print head 2 is printing
page 2 on the back of page 1.
To enable printing of multi-part paper (copies) print head 2 can be disabled.
and this machine can be used as a 'normal' printer.
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