Computer Laboratory

Printing and scanning

The Computer Lab has a number of public printers of different types. Most are colour laser printers, but we also have several B&W laser printers, A3 printers, multifunction printers, and a poster printer.

All printing on lab-owned printers is free of charge. Note that our facilities are available only to members of the Computer Laboratory. If Google has bought you to this page from somewhere else in the University then you need to contact the Information Service Printing and Illustration Service (PandIS)

Any problems with lab-owned printers should be reported to the mailing list [Javascript required]. This includes toner out, paper jams, strange error messages and stuck queues.

List of printers and their locations

Which printer should I use?

  • For A3 B&W printing, please use poplar or palm.
  • For colour A3 printing, please use sycamore, holly, or mulberry.
  • To copy and/or scan documents, use holly or mulberry.
  • To print posters, use gum - see Producing posters for further instructions.

The printers palm, willow and poplar have an extra-large paper tray and are thus recommended for larger jobs. They also have stapler attachments. It is also possible to send documents to the University Information Service printroom.

Stores carry 100gsm paper, which can be used in all of our A4 printers.

The lab does not support individual printing of business cards, but you can order them from the University Information Service printroom.

Connecting to printers

How you connect to printers depends on which OS you are using, and how your computer is connected to the lab network. Whatever your OS, the print server is available from the wired network that we use for personal computers, and from the wireless networks Internal-CL, eduroam and UniOfCam. It is not available from the wgb wireless network.


Unix

If you are a Unix user, you do not have to pre-load printers — they should all be available for use whether you have a wired or wireless connection.

Make sure you have a file called /etc/cups/client.conf. It should contain the line

ServerName cups-serv.cl.cam.ac.uk

If you have to change the contents of the file you will then need to restart cups, most likely using the command cl-asuser service cups restart. This should be all that is necessary to make the printers available.

All lab-maintained Unix machines running CUPS have a script installed to help with CUPS printing options. It will either be installed as "lpr" or as "lpr.cl". As an example of the difference, printing a file on the printer palm with staples using the script is fairly straightforward:

lpr.cl -Ppalm -staple filename

Whereas without the script, the command will look like this:

lpr -Ppalm -o Option17=DF73 -o OutputBin=Main -o KMStapleMode=Rear1 filename

Most of the LaserJets print double-sided by default; use the -single option to print single-sided.

You cannot print Windows-specific formats (eg .doc, .ppt) directly from the command line, so print from a utility (eg. soffice) instead.


Windows 7 or newer

There are three methods of adding printers available for Windows machines:

  • Manually adding printers. If you are using a centrally-managed machine, there is a script available to simplify the process of adding printers.
  • Using Bonjour. This is the recommended method for laptop users who are connected via the Windows VLAN (298) or Internal-CL network.
  • Direct connection using CUPS. This method is suitable for visitors connected via eduroam or UniOfCam network and for users who do not wish to use Bonjour.

macOS

There are two methods of adding printers available on macOS:

  • Using Bonjour. This is the recommended method for users who are connected via the wired network or Internal-CL network.
  • Direct connection using CUPS. This method is suitable for visitors connected via eduroam or UniOfCam network and for users who do not wish to use Bonjour.

University Information Service Printroom

The UIS provides its own printing service which is available (for a fee) to other members of the University and may prove useful if Lab facilities are not appropriate.

You can find the details on how to use the service at the bottom of the UIS Printroom Services page.