Re: [PARPORT] Two printers, one parallel port

From: Florian Sukup (
Date: Thu Sep 28 2000 - 16:01:37 EDT

  • Next message: Tim Waugh: "Re: [PARPORT] Two printers, one parallel port"

    Tim Waugh wrote:
    > On Thu, Sep 28, 2000 at 11:31:59AM +0200, Florian Sukup wrote:
    > > In the manual I read, that it's possible to access both printers with one
    > > parallel connection. I found an interface where at the DEC printer where I
    > > could plug in the printer cable of the Canon printer.
    > Two _printers_? I can only guess that the DEClaser 1800 does IEEE
    > 1284.3 daisy-chaining, in which case the way things are structured
    > right now it would take a (simple) new device driver and some new
    > device nodes to get it going.

    There is no manual for the DEClaser printer. So I cannot verify if it
    does 'IEEE 1284.3 daisy-chaining' (I haven't had anything to do with
    this stuff and, therefore, haven't heard that term).

    If you mean printer driver by device driver, there are two printer
    drivers installed, ljet3 and bjc600, one for the DEClaser the other one
    for the Canon. And they work if I have connected either one or the
    other. But not both. For each printer driver there is a queue. I thought
    if I assemble a printer chain (DEClaser on PC, Canon on DEClaser) I can
    access either printer by using its queue. But no matter which queue I
    use, always the DEClaser prints. If I send the request through the
    bjc600 queue, of course, it prints only garbage.

    What do you mean with the 'new device nodes'?

    > Does the manual say about any special drivers that you might need to
    > get it going (on any operating systems)?
    > > But I can't access the Canon printer this way just by specifying the
    > > bjc600-queue. Maybe it is naive to believe it could work this way,
    > > but it's my first time ...
    > It probably just uses the DEC, right?

    Exactly, if I print anything through the bjc600 queue it results in
    garbage at the DEC printer.


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