[cups.general] 35257-cups.general at news.easysw.com

Steve Smith steve at gdesigns.co.uk
Tue May 19 13:42:03 PDT 2009


Hi

The RAW CUPS queues are set to use AppSocket/HP JetDirect 
socket://ip address:9100

I guess the underlying question is how does CUPS know how much data it can
send to the plotter in one go, it seems to be 'drip feeding'.

Steve Smith - GEO Designs Limited
 
(voice) +44 (0)2392 466750
(fax) +44 (0)2392 637390
(mob) +44 (0)7973 392069
steve at gdesigns.co.uk
www.gdesigns.co.uk
 
Please contact us if you CGM files, we have the solutions
-----Original Message-----
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Sent: 19 May 2009 20:00
To: cups at easysw.com
Subject: cups Digest, Vol 64, Issue 22

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Today's Topics:

   1. Re: Restricting use of a colour printer	toblack-and-white
      (Brett Ussher)
   2. Does CUPS keep the PS files it generates for	printing?
      (Brett Ussher)
   3. Re: Print Speed (Michael Sweet)
   4. Re: Does CUPS keep the PS files it generates for	printing?
      (Michael Sweet)
   5. Tray-Control Duplex (max server)
   6. Re: Tray-Control Duplex (Helge Blischke)
   7. Re: Tray-Control Duplex (max server)
   8. Re: Tray-Control Duplex (Michael Sweet)


----------------------------------------------------------------------

Message: 1
Date: Mon, 18 May 2009 17:58:49 -0700
From: Brett Ussher <breusshe at hotmail.com>
Subject: Re: [cups.general] Restricting use of a colour printer
	toblack-and-white
To: cups at easysw.com
Message-ID: <35255-cups.general at news.easysw.com>

I just recently did this.  I took a color PPD file and looked through it for
awhile.  How I figured out what was a color printer setting and what was
black and white was by looking at how the driver option settings appeared in
the CUPS admin.  In the settings you can set a printer to print just black
and white, of course, but I wanted it to be the only option.  By looking at
all the other color option names and searching for them in the PPD I was
able to successfully delete all of the color settings and leave only the
black and white with composite black (grayscale) and then set those options
to the default setting for the driver.

The key is to keep an original copy of the PPD so that if you mess in
editing it, you're not out of luck.  But, all in all, it only took me about
30 minutes to figure out what to delete from the file and I've never opened
a PPD before.

Brett

> >
> > There may also be other ways to alter the PPD to make it black and
> > white only. I am not a post script master but I have seen some of
> > these people at work.
> >
> > Having two queues available to the clients is a good idea. It is very
> > simple protection.
> >
> > If the users have administration control over their machines or are
> > able to add print queues and you require greater security then
> > PrintAgent : http://www.lucidsystems.org/pringingworks/printagent is
> > able to authenticate specific users to a CUPS queue. PrintAgent is
> > also able to interface with various directory systems for password
> > credentials so that people will be granted or denied access based upon
> > group membership for instance.
> >
> > This kind of approach allows both queues to be installed on a single
> > machine but will only allow someone who is allowed to print to print
> > to the color queue.
> >
> > Finally if the clients are *NIX based then, PrinterSetup is able to
> > dynamically alter the queues based upon the user who is logging onto
> > the system. So if a user is a certain group then they will have both
> > color and black and white queues available in the print dialog box.
> > Details on PrinterSetup is available from :
http://www.lucidsystems.org/printingworks/printagent/
> >
> > I hope this helps.
>
> Thank you, Henri. PrintAgent is new to me and sounds to be worth
investigating - even for uses other than the specific one I asked about.
>
> John A. Murdie



------------------------------

Message: 2
Date: Mon, 18 May 2009 18:09:08 -0700
From: Brett Ussher <breusshe at hotmail.com>
Subject: [cups.general] Does CUPS keep the PS files it generates for
	printing?
To: cups at easysw.com
Message-ID: <35256-cups.general at news.easysw.com>

I need to get hold of one of the postscript files that I've printed (not
anyone in particular, just need one for troubleshooting an unrelated issue).
I'm wondering if CUPS keeps a copy of the files it has printed.  I found
/var/spool/cups, but that only seems to have the log of the job that was
printed, not the job itself.  Is there a place I can look or do I need to
enable some setting to make CUPS store the PS files for a bit?

Thanks,

Brett Ussher


------------------------------

Message: 3
Date: Mon, 18 May 2009 20:06:09 -0700
From: Michael Sweet <mike at easysw.com>
Subject: Re: [cups.general] Print Speed
To: cups at easysw.com
Message-ID: <35257-cups.general at news.easysw.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Steve Smith wrote:
> 
> 
> Hi
> 
>  
> 
> We have implemented CUPS 1.3.7 for our network printing environment.  
> Our application software generates large RTL files for wide format 
> Designjet printers but we have a problem. When we print through RAW CUPS 
> queues the print speed on the Designjets is slow, The printhead does a 
> pass but then seems to be waiting for more data before the next pass.  
> If we print directly to the Designjet via TCP/IP the print speed is 
> fine.  Is there anything we can do to increase the speed as it not a 
> memory issue in the printer.

What backend (device URI) are you using?

-- 
______________________________________________________________________
Michael Sweet, Easy Software Products           mike at easysw dot com


------------------------------

Message: 4
Date: Mon, 18 May 2009 20:09:59 -0700
From: Michael Sweet <mike at easysw.com>
Subject: Re: [cups.general] Does CUPS keep the PS files it generates
	for	printing?
To: cups at easysw.com
Message-ID: <35258-cups.general at news.easysw.com>
Content-Type: text/plain; charset=UTF-8; format=flowed

Brett Ussher wrote:
> I need to get hold of one of the postscript files that I've printed
> (not anyone in particular, just need one for troubleshooting an
> unrelated issue).  I'm wondering if CUPS keeps a copy of the files it
> has printed.  I found /var/spool/cups, but that only seems to have
> the log of the job that was printed, not the job itself.  Is there a
> place I can look or do I need to enable some setting to make CUPS
> store the PS files for a bit?

You won't have the printer-ready PostScript there, but if you turn
the "PreserveJobFiles" option in cupsd.conf on, e.g.:

     cupsctl PreserveJobFiles=Yes

then the "d" files will still be around.

-- 
______________________________________________________________________
Michael Sweet, Easy Software Products           mike at easysw dot com


------------------------------

Message: 5
Date: Tue, 19 May 2009 00:09:57 -0700
From: max server <max40 at gmx.de>
Subject: [cups.general] Tray-Control Duplex
To: cups at easysw.com
Message-ID: <35259-cups.general at news.easysw.com>

Hi,
I have a problem

I want to print duplex and provides pages of an other tray printing (also
duplex)!

lp -d myprinter -o Duplex=DuplexNoTumble -o PageSize=A4 -o InputSlot=Manual
-o 3:InputSlot=Tray1 -o 4:InputSlot=Tray1 /mydoc.pdf

The document has 6 pages!
Page 1 and 2 also 5 and 6 will be correctly printed (duplex)
Page 3 and 4 be printed simplex !
The same even if b






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