[cups] Brother MFC-L8850CDW

Daniel Johnson bunjee49 at msn.com
Thu Mar 31 15:17:34 PDT 2016


Does this forum support Sabayon Linux?

> Date: Wed, 30 Mar 2016 11:33:29 +0200
> From: jsmeix at suse.de
> To: cups at cups.org
> Subject: Re: [cups] Brother MFC-L8850CDW
> 
> 
> Hello,
> 
> On Mar 29 23:27 Ruben De Smet wrote (excerpt):
> > On 03/29/2016 10:47 AM, Johannes Meixner wrote:
> ...
> >> ... some devices ... need
> >> continuous bidirectional communication with their special
> >> matching driver software while making the printout.
> >>
> >> Such devices cannot be used with a printserver box in between.
> >
> > Why can't the print server act as the bidirectional
> > communication box, after having received a full
> > postscript document?
> 
> At least for me "print server" != "printserver box", cf.
> https://en.opensuse.org/SDB:Printing_via_TCP/IP_network
> (excerpt):
> ---------------------------------------------------------
> A special device with a TCP/IP network connection and
> one or more parallel or USB connections for parallel
> port or USB printers is called a printserver box.
> 
> A printer with a built-in TCP/IP network interface
> is called a network printer. Basically a network printer
> as a printserver box built in.
> 
> ...
> 
> In contrast to a printserver box a print server machine
> means a real computer which offers a print service. 
> ---------------------------------------------------------
> 
> When any device needs any kind of special program that
> must run on a computer to make that device working,
> that special program is usually called a "driver"
> for that device.
> 
> When you can run special driver software on a particular
> printserver box, devices that need such a special driver
> will work with that printserver box.
> 
> But usually you cannot install and run special software
> on a printserver box which is the reason why such devices
> can usually not be used with a printserver box in between.
> 
> In contrast when a print server is a real computer where
> you can install and run driver software for such devices,
> then you can use such devices with a print server.
> 
> Usually a precondition is that the device is directly
> connected to the computer where its driver runs so that
> the driver can directly communicate with its device.
> 
> Usually it does no longer work for such devices when
> there is "something in between" the computer where its
> driver software runs and the device.
> 
> Of course it will work when that "something in between"
> perfectly forwards all communication between driver and
> device - i.e. when that "something in between" is perfectly
> transparent for the driver and its device, for example
> usual USB hubs or usual networking hubs/switches/gateways
> provided there is no traffic filtering (e.g. firewall).
> 
> 
> Kind Regards
> Johannes Meixner
> -- 
> SUSE LINUX GmbH - GF: Felix Imendoerffer, Jane Smithard,
> Graham Norton - HRB 21284 (AG Nuernberg)
> 
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