[cups.general] How to alias existing CUPS printers togetadditionalpaper tray capability?

[Michael Sweet]

Michael Talbot-Wilson wrote:
> On Mon, 20 Mar 2006, Michael Sweet wrote:
> 
>>    lpoptions -p lj4000/tray1 -o media=Upper
>> ...
>>
>> In CUPS 1.2, you can create separate queues which point at the same
>> printer using the lpadmin command:
>>
>>    lpadmin -p ljtray1 -E -v ipp://localhost/printers/lj4000 \
>>     -o media-default=Upper
> 
> dvips supports different print queues by appending queue names to file
> names, thus: config.bjc6000.  When the print queue instance name is
> bjc6000/hires (which might select 720x720dpi instead of the default
> 360x360), how do you select the dvips config file?

No clue.  From what I can guess from the dvips man page, they assume
you are using lpr, so you'll need to pass in the base queue name via
the -P option to get meaningful results, something like:

     dvips ... -P `dirname $dest` ...

where $dest is defined to be the printer/instance name.

> The dvips config file among other things tells dvips the resolution
> and what metafont mode to invoke to generate fonts tuned for the
> printer concerned.
> 
> This affects what resolutions and qualities of Type 3 fonts are
> generated. So bjc6000/hires would not use config.bjc6000 even if the
> apparent queue name bjc6000/hires were somehow able to select that
> file.  The impossible file name 'config.bjc6000/hires' is required
> IIAMN.
> 
> It is ... unusual ... that '/' was selected as the instance separator
> in software aimed at Unix.

Not at all, the instance is associated with the printer, much like
a file is associated with a directory.

What is unusual is that dvips makes assumptions about the printer
name, like it can be used as a filename (lpr even allows spaces in
alias names!)

> Perhaps one can s|/|^|g throughout the source tree.

Yeah, replace a safe character with a special shell character...

> Or use separate queues.

You've always had that option.

-- 
______________________________________________________________________
Michael Sweet, Easy Software Products           mike at easysw dot com
Internet Printing and Publishing Software        http://www.easysw.com