Rob McDougall wrote -

<snip>
>The LJ 9000 probably prints the front of the second page while the first
>page is being turned over.  This means that the engine is not held up
>waiting for the paper to turn over.  No magic and I'm afraid the speed
isn't
>doubled, but it *is* faster.  Xerox has printers that do this already, but
I
>think this is the first HP to do it.


I thought the old "Jumbo" printers duplexed in batches, printing several
pages on one side then turning them over while printing the second side on
the previous batch. The duplex path was very long and could handle several
sheets at once.

Having sorted out more than a few wrecks on this printer I would extract
quite a few pages printed on one side only.

It was a monster.

Martin Mason

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