TableOfContents

Printing with Cups Server ZNCUPS

at DESY Zeuthen, the current printing system LPRng will be replaced by the Common Unix Printing System ([http://www.cups.org CUPS]). The reasons are

• CUPS is better integrated in Linux Desktops like KDE and Gnome, as well as into more and more applications, like OpenOffice, Adobe Reader, etc.

• With CUPS and Samba the Windows users will be able to control (cancel,...) their print jobs.
• LPRng is no longer being developed, nor supported.
• printing administration will be much easier.

With this change of the printing system, NEW - shorter - printer names will be introduced. Alias names are not supported in CUPS.

Network Printers

• Anchor(NetworkPrinters)

  Printer	Model	Duplex	Color	Banner	Transparency	A3	Location	old Name	Printing System	Further Instances
  [http://ZNCUPS.ifh.de:631/printers/znbr znbr]	HP Laserjet 4050N	no	no	no	no	no	1L05	ps_br	lprng
  [http://ZNCUPS.ifh.de:631/printers/zncon zncon]	HP_4050N	no	no	no	no	no	Conference Printer	ps_con	lprng
  [http://ZNCUPS.ifh.de:631/printers/znconc znconc]	Xerox Phaser 6250	yes	yes	no	yes	no	Conference Printer	xerocol1	lprng
  [http://ZNCUPS.ifh.de:631/printers/znecad znecad]	HP Laserjet 8150	yes	no	yes	no	yes	1L13	ps_ecad	lprng	znecad/A3
  [http://ZNCUPS.ifh.de:631/printers/znld1 znld1]	HP Laserjet 8150	yes	no	yes	no	no	3L21	ps_ld1	lprng	znld1/simplex
  [http://ZNCUPS.ifh.de:631/printers/znld2 znld2]	HP Laserjet 4100DTN	yes	no	yes	no	no	3L51/1	ps_ld2	lprng	znld2/simplex
  [http://ZNCUPS.ifh.de:631/printers/znle1 znle1]	HP Laserjet 8150	yes	no	yes	no	yes	1L47	ps_le1	lprng	znle1/simplex
  [http://ZNCUPS.ifh.de:631/printers/znlo1 znlo1]	HP Laserjet 8150	yes	no	yes	no	yes	2L01	ps_lo1	lprng	znlo1/simplex
  [http://ZNCUPS.ifh.de:631/printers/znlo1c znlo1c]	Xerox Phaser 6350	yes	yes	yes	yes	no	2L01	ps_col,xerocol	lprng	znlo1c/transp, znlo1c/simplex
  [http://ZNCUPS.ifh.de:631/printers/znlo2 znlo2]	HP Laserjet 8150	yes	no	yes	no	no	2L01	ps_lo2	lprng	znlo2/simplex
  [http://ZNCUPS.ifh.de:631/printers/znmcad znmcad]	HP Laserjet 5Si	yes	no	no	no	yes	1HU01	ps_mcad	lprng
  [http://ZNCUPS.ifh.de:631/printers/znpitz znpitz]	HP Laserjet 4100DTN	yes	no	no	no	no	1LK03	ps_pitz	lprng
  [http://ZNCUPS.ifh.de:631/printers/znrz1 znrz1]	HP Laserjet 8150	yes	no	no	no	no	Computer Centre	ps_rz1	cups	znrz1/simplex
  [http://ZNCUPS.ifh.de:631/printers/znrzc znrzc]	Xerox Phaser 6350	yes	yes	no	yes	no	Computer Centre	xerocol2	cups	znrzc/transp
  [http://ZNCUPS.ifh.de:631/printers/pitzcontrol pitzcontrol]	PitzControl Logbook	no	no	no	no	no	pitz logbook	pitzcontrol	lprng	pitzcontrol
  [http://ZNCUPS.ifh.de:631/printers/pitzlog pitzlog]	PitzLog Logbook	no	no	no	no	no	pitz logbook	pitzlog	lprng	pitzlog

Windows Printing

• printing works both for domain members and guest hosts
  • click "run" in the Startmenu
  • type "\\zncups" and press Enter. Your notebook will now connect to the print server.
  • choose a printer. double click to add a printer to your notebook. The printer drivers will be downloaded.
  • go to "Printers and Faxes" in the Startmenu if you want to change the Printers configuration.
  • from now on you can use the chosen printer
• canceling a print job
  • Click on "Printers and Faxes" in the Start menu
  • Double click on the printer holding the print job
  • Click with the Right Mouse Button on the print job you want delete
  • Click on "Cancel"
  • Click on "Yes"

UNIX Printing

• Managing print jobs on UNIX
  • default printer: set LPDEST to your favorite printer
    • default: znlo1 (location: 2L01)
    • zsh: edit $HOME/.zprofile and add or modify the line

      • export LPDEST=your_printer

    • tcsh: edit $HOME/.login and add or modify the line

      • setenv LPDEST your_printer

  • Printing with the CLI (command line interface)

    • using lpr: lpr -Pprinter myfile

    • using lp: lp -dprinter myfile

  • Examining the print queue with the CLI

    • display a specific queue: lpstat -pprinter

    • display all available queues: lpstat -p
    • list all active jobs: lpstat -o
  • Cancelling of print jobs with the CLI
    • use cancel and no longer lprm

    • cancel your last job on printer with: cancel printer

    • cancel specific jobs: first get the job-ids using lpstat, afterwards use cancel:

          [myhost] % lpstat -o
           znrz1-31                ottostr        1688576   Thu Jan  4 12:20:51 2007
           znrz1-32                frida         31596544   Thu Jan  4 12:20:55 2007
           znrz1-33                wwinzig        1654900   Thu Jan  4 12:30:57 2007
           znrzc-34                ottostr       61533324   Thu Jan  4 12:32:13 2007
          [myhost] % cancel znrz1-31 znrzc-34

Overview of Cups Printing Options on UNIX

Printing Options are passed to Cups using the -o Option of lp and lpr:

• lpr -o option1=value1 -o option2=value2 [...] file

• lp -o option1=value1 -o option2=value2 [...] file

For more options and additional information see the [http://localhost:631/sum.html "Cups Software User Manual"] (If there is no Cups daemon running on the local machine, this link won't be available)

Frequently Asked Questions

Why changing the printing system?

• LPRng is no longer supported

• Cups is better integrated in Linux Desktops like KDE and Gnome, into OpenOffice and other applications

• the user can select features like resolution, duplexing, pagesize etc.
• Cups is easier to administrate. The printer PPD files are used.
• Samba and Cups are working very well together for the Windows Print Service.

Which file formats can Cups process ?

• PostScript, PDF, International Text, TIFF, GIF, PNG, JPEG, SUN−Raster and other graphic formats

• CUPS uses the rules in the configuration file /etc/cups/mime.types to determine the MIME type of files to be printed. From the MIME type CUPS is deriving the printing format.

Which applications do offer a tight cups integration on a UNIX system ?

• Acrobat Reader
• ... (to be completed)

How can I select the simplex mode on a duplex printer under UNIX ?

• use option sides=one-sided

• using lpr: lpr -Pprinter -o sides=one-sided myfile

• using lp: lp -d printer -o sides=one-sided myfile

• if a simplex instance exists: lp -d printer/simplex myfile

Why there are no A3 and transparency queues anymore?

• With CUPS there is only one queue for a given printer. The filtering of the print job will be done on the local host, no longer on the print server. Instead of selecting features by queue name the user now has to use command line options or the GUI to use specific features.
• Printer specific options and their current settings can be listed with

  • lpoptions -p printer -l

• examples for selecting features
  • A3 printing: lp -o pagesize=A3 file.ps
  • printing on transparencies: lpr -o media=Transparency talk.ps

How can I remove a print job on a UNIX system?

• The CUPS job on the local system gets a job-id which is not suitable for removing a job on the print server. The job-id on the print server is different, it can be displayed using lpstat. After finding out the job-id on the print server you can remove it. Use cancel and no longer lprm for removing your print jobs.

How can I change personal printer specific option settings?

• Use lpoptions to save personal option settings in ~/.lpoptions. Example: lpoptions -o pagesize=A3 -p znecad

How can I print multiple copies of a document using the CLI?

• lp -n number-of-copies file

Copies are not collated by default. Use the -o Collate=True option to get collated copies:

• lp -n number-of-copies -o Collate=True file

How can I change the layout of the output pages when using N-Up printing?

In order to change the borders around each page, use the -o page-border=value option. Supported borders are:

• none: do not draw a border (default)

• double: draw two hairline borders around each page

• double-thick: draw two 1pt borders around each page

• single: draw one hairline border around each page

• single-thick: draw one 1pt border around each page

Example: lp -o number-up=4 -o page-border=double myfile

In order to change the arrangement of the pages on each output page, use the -o number-up-layout=value option. Possible values are:

• lrtb: Left to right, top to bottom (default)

• lrbt: Left to right, bottom to top

• rlbt: Right to left, bottom to top

• rltb: Right to left, top to bottom

• tblr: Top to bottom, left to right

• tbrl: Top to bottom, right to left

• btlr: Bottom to top, left to right

• btrl: Bottom to top, right to left

Explanation: The default layout is lrtb(Left to right, top to bottom). This means: using a number-up of 4, the first page will be printed on the top-left of the outputpage, the second page will be printed on the top-right, the third page will be printed on the bottem-left and the fourth page on the bottom-right of the outputpage.

Example: lp -o number-up=4 -o number-up-layout=btrl myfile

I'm using psutils (pstops,psnup,psbook). Even though I'm using the option ''sides=two-sided-short-edge'' the output was not arranged in the correct order. What can I do?

• The psutils suite of programs is not compatible with the CUPS postscript processing (filter). It is unmaintained since a long time, therefore improvement of the situation is unlikely.
• With the following command you can bypass the postscript filter

  • lp -o document-format=application/bindshort -dprinter myfile

I'm using psutils (pstops,psnup,psbook). On the Xerox Color Printer I get wrong output with a different font. What can I do?

• the psutils tools caused this problem (see above).
• With the following command you can bypass the postscript filter

  • lp -o document-format=application/bindlong -dprinter myfile

  • or lp -o document-format=application/bindshort -dprinter myfile

Printing from Linux Notebooks

using cups

Use one of the following two methods to let your local cups communicate with our server. Afterwards you can use cups as described above.

use a local cups-daemon

• If you want your Cupsd to communicate with the server permanently, just add the line Browsepoll zncups.ifh.de to /etc/cups/cupsd.conf and restart the cups-deamon by typing /etc/init.d/cups restart as root. From now on, the cups-daemon will comunicate with zncups every time cups is started.

• If you just want cups to communicate with the server for the current session, you can start the cups-polld manually. Normally it is located in /usr/lib/cups/daemon/. You can start it by typing /usr/lib/cups/daemon/cups-polld zncups.ifh.de 631 30 631 as root. If you do so, there is no need to restart the local cups-server. By default, the printer information are lost 5 minutes after stopping the cups-polld.

• or use the usual "add new printer" dialogue and provide the name of the queue which is the printers name and the IP address of the server
• or run as root

    lpadmin -p <printer_name> -E -v ipp://zncups.ifh.de/<printer_name>

without local cups-daemon

If you have no local cupsd running, just change the Servername directive in /etc/cups/client.conf to zncups.ifh.de

lpr/lp based printing system

• If you work with a lpr/lp based subsystem a printcap entry in your /etc/printcap file would probably look like this:

  <printer_name>:\
  :rm=zncups.ifh.de:\
  :rp=<printer_name> 

Known Problems using Cups

• network trouble or problems on the print server can cause an empty printer setup on the clients
• psutils and the CUPS postscript filter are incompatible