Setting up Samba as a Print Server: Difference between revisions
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= Introduction = |
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If you set up Samba as a print server, clients in your network are able to send print jobs to the Samba host using the server message block (SMB) protocol. The examples shown in this documentation use a raw printer in the back end. This configuration requires that the print job is formatted by a driver on the client and thus can be processed by the printer without further processing or filtering. |
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== Introduction == |
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This HowTo will provide you an easy guide to setup Samba to act as a Windows print server including Point'n'Click printer driver installation for users. |
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'''This HowTo is valid for Samba 3 and 4 print server installations.''' |
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= Supported Print Server Back Ends = |
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Samba supports the multiple print server back ends, such as [https://www.cups.org/ CUPS] and [http://www.lprng.com/ LPRng]. For a complete list, see the <code>printing</code> parameter in the <code>smb.conf(5)</code> man page. |
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== Some definitions == |
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{{Imbox |
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* Printer share: Each printer is shared by a name. During the printing process, the client send the printjob to it. |
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| type = note |
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| text = You must set up the printer server back end locally on the Samba host. Samba cannot forward print jobs to a remote host. However, you can configure the local printer server back end to forward the job to a remote print server. |
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}} |
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For details how to set up the back end, see the print server's documentation. |
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* Print server backend. Samba can use e. g. CUPS, LPD/Lprng and other as backend. The print server forwards the job to local or network printers. |
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* Windows printer driver: A piece of software, that converts the printed data to a printer specific form. The driver for each shared printer can be preconfigured with default values. |
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* Point'n'Print: Windows 2000 and later support the abillity to automatically download and install drivers from the server including preconfiguring, when connecting a printer. The installation can be done by ordinary users, without special permissions. |
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* Printer forms: Windows is already shipped with an amount of forms, that define the typical paper sizes. If a formular isn't known to the print server, the client could not use this, altought the printer is able to do it. |
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== Driver models == |
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Supported by Samba: Printer driver version 3 (Windows 2000 to Windows 8) |
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Currently not supported by Samba: [http://msdn.microsoft.com/en-us/library/windows/hardware/hh706306%28v=vs.85%29.aspx Printer driver version 4] (Windows 8) |
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== Samba <code>CUPS</code> or <code>IPRINT</code> Back End Support == |
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When using the <code>CUPS</code> or <code>IPRINT</code> print server back end, Samba must have been built with CUPS support enabled. To verify, enter: |
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# smbd -b | grep "HAVE_CUPS" |
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HAVE_CUPS |
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If no output is displayed: |
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= Print server backend = |
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* Samba was built using the <code>--disable-cups</code> parameter. |
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* The Samba <code>configure</code> script was unable to locate the required libraries for CUPS support. For details, see [[Package Dependencies Required to Build Samba]]. |
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The following sub-chapters will give you a short overview on possible backends, including adding a new network printer, we'll use in our later examples for sharing it by Samba. |
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The examples setup a RAW printer (content is send directly to the device). We don't use filters or drivers on the backend, because a RAW printer allows us to render the output on the workstation and use the printer specific driver. |
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We assume here, that you have the print server backend already basically configured and it's running, so printers can be added next. |
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= Adding a printer to the Print Server Back End = |
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== CUPS == |
== CUPS == |
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To add a raw printer to an CUPS print server: |
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[http://www.cups.org CUPS] is currently the most widely used spool system in *nix environments and shipped with most distributions. Samba has built-in support and defaults to CUPS if the development package (aka header files and libraries) could be found at compile time. |
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* Open the CUPS admin web interface in your browser. For example, <nowiki>https://servername:631/admin</nowiki> |
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Basically all sorts of files can be printed with CUPS, but using a Postscript or a RAW printer driver will give you the most benefit in combination with the Windows printer driver, because then all settings can be controlled on the Windows client. |
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* Select the <code>Administration</code> tab and click <code>Add Printer</code>. |
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* Select the connection type and enter the corresponding URL to the printer's queue or to the remote print server queue. For example: |
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:* LPD-based printers: <code>lpd://''printer_name''/''queue''</code> |
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:* IPP (Internet Printing Protocol)-based printers: <code>ipp://''printer_name''/ipp/port</code> |
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:* SMB (Server Message Block)-based printers: <code>smb://''username'':''password''@''domain''/''windows_print_server_host_name''/''printer_name''</code> |
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:: Note that forwarding a job to a print server running Windows Vista or newer, or Windows Server 2008 or newer requires authentication. |
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* Enter a name for the printer. This name is used in the <code>smb.conf</code> when sharing the printer using Samba. |
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=== Adding a new printer === |
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* Select the <code>Raw</code> printer vendor and model. |
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* Open the CUPS admin webfrontend (https://servername:631/admin). |
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* Save the settings. |
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* On the „Administration“ tab click the „Add Printer“ button. |
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* Choose the way, how your printer is connected and enter the appropriate URL. Examples: |
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# LPD protocol |
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lpd://hostname/queue |
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# Internet Printing Protocol |
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ipp://hostname/ipp/port |
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# Forwarding the jobs to a Windows print server. |
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# Hint: Vista and higher, don't allow anonymous connects by default, so you must provide a username and password. |
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smb://username:password@domain/servername/printername |
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* Enter a name for the printer |
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== LPRng == |
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* When you reached the step, where to choose the vendor and model, choose „Raw“ for both, because the rendering is already done later by the Windows driver. |
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To add a raw printer to a LPRng print server: |
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* Add the following line to the <code>/etc/printcap</code> file: |
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''printer_name'':sd=/var/spool/lpd/''printer_name''/:sh:mx=0:mc=0:rm=''Printer_DNS_name_or_IP_address'' |
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: The printer name is used in the smb.conf when sharing the printer using Samba. |
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: For further details about the options used, see the <code>printcap(5)</code> man page. |
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* To create the spool directory, enter: |
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== LPD == |
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# checkpc -f |
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This was the first widely used printing system and still runs on many servers. It is very simple to install and configure. There are different implementations of LPD servers, like the often used [http://www.lprng.org/ LPRng]. |
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* Restart the LPRng service. |
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=== Adding a new printer === |
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* To add a new network printer, you simply need to add the following line to your 'printcap' (typically '/etc/printcap'). For the different options used in the example, see 'man printcap'. |
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PRINTERNAME:sd=/path/to/spool/directory:sh:mx=0:mc=0:rm=IP_or_DNS_Name |
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= Enabling the <code>spoolssd</code> Service = |
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* After adding the new printer entry, run the following command to create the LPD spool directory and restart/reload the service, to take the changes affect. |
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The Samba <code>spoolssd</code> is a service that is integrated into the smbd service. If you configured Samba as a print server, you can additionally enable <code>spoolssd</code> to: |
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# checkpc -f |
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* Support package-aware Windows drivers. |
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# service lpd restart |
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* Increase performance on print servers with a high number of jobs or printers. |
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: Without <code>spoolssd</code>, Samba forks the <code>smbd</code> process or each print job and initializes the <code>printcap</code> cache. In case of a large number of printers, the <code>smbd</code> service can become unresponsive for multiple seconds when initializing the cache. The <code>spoolssd</code> service enables you to start pre-forked <code>smbd</code> processes that are processing print jobs without any delay. The main <code>spoolssd</code> <code>smbd</code> process uses a low amount of memory, and forks and terminates child processes |
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To enable the <code>spoolssd</code> service: |
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* The following command allows you query the state of the printer: |
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* Edit the <code>[global]</code> section in your <code>smb.conf</code> file: |
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# lpq -P PRINTERNAME |
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Printer: PRINTERNAME@SAMPRINTSERVER (dest PRINTERNAME@IP_or_DNS_Name) |
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Queue: no printable jobs in queue |
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Ready |
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no entries |
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:* Add the following parameters: |
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rpc_server:spoolss = external |
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rpc_daemon:spoolssd = fork |
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:* Optionally, you can set the following parameters: |
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::{| class="wikitable" |
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!Parameter |
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!Default |
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!Description |
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|- |
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|spoolssd:prefork_min_children |
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|5 |
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|Minimum number of child processes |
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|- |
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|spoolssd:prefork_max_children |
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|25 |
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|Maximum number of child processes |
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|- |
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|spoolssd:prefork_spawn_rate |
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|5 |
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|Samba forks this number of new child processes, up to the value set in <code>spoolssd:prefork_max_children</code>, if a new connection is established |
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|- |
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|spoolssd:prefork_max_allowed_clients |
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|100 |
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|Number of clients, a child process serves |
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|- |
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|spoolssd:prefork_child_min_life |
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|60 |
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|Minimum lifetime of a child process in seconds. 60 seconds is the minimum. |
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|} |
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* Restart Samba. |
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After the restart, Samba automatically starts <code>smbd</code> sub-processes: |
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= Configuring Samba as print server = |
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# ps axf |
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... |
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30903 smbd |
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30912 \_ smbd |
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30913 \_ smbd |
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30914 \_ smbd |
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30915 \_ smbd |
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... |
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== General == |
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=== Granting print operator privileges === |
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Users or groups, who should be able to administrate printers on your server, have to be granted the „SePrintOperatorPrivilege“ privilege. It is recommended, to grant it to a domain group, because changes can be done quick and easily with the typical user management tools like ADUC. |
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The following example grants the privilege to the domain group „Domain Admins“: |
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= Enabling the Print Server Support in Samba = |
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# net rpc rights grant 'SAMDOM\Domain Admins' SePrintOperatorPrivilege -Uadministrator |
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To enable the print server support: |
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Existing privileges you can reviewed by |
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* Set the printing back end in the <code>printing</code> parameter of the <code>[global]</code> section in your <code>smb.conf</code> file. For example: |
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# net rpc rights list accounts -Uadministrator |
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printing = CUPS |
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* Add the following section to your <code>smb.conf</code>: |
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=== Setup the [printers] share === |
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This share defines general information about your printing backend. See the „[printers]“ section in the man page for additional information. |
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* Add the new section to your smb.conf |
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[printers] |
[printers] |
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path = /var/spool/samba |
path = /var/spool/samba/ |
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printable = yes |
printable = yes |
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printing = CUPS|LPRNG|... |
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* If you choose CUPS as backend, make sure, that your smbd is compiled with CUPS support: |
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# smbd -b | grep CUPS |
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HAVE_CUPS_CUPS_H |
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HAVE_CUPS_LANGUAGE_H |
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HAVE_CUPS |
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HAVE_LIBCUPS |
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If you don't get any output, make sure, that the CUPS header files and libraries are installed and recompile Samba with --with-cups. |
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* |
* Create the spool directory set in the <code>path</code> parameter: |
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# mkdir -p /var/spool/samba/ |
# mkdir -p /var/spool/samba/ |
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# chmod 1777 /var/spool/samba/ |
# chmod 1777 /var/spool/samba/ |
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* Reload Samba: |
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# smbcontrol all reload-config |
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=== Setup the [print$] share === |
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To enable Point'n'Print support, a share named „print$“ must exist. This share name is hardcoded in Windows clients and can't be choosen. |
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* Add the share to your smb.conf |
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[print$] |
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path = /srv/samba/Printer_drivers |
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comment = Printer Drivers |
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writeable = yes |
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= Sharing a Printer = |
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* Create the folder, that will contain the drivers later: |
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== Automatic Sharing of All Printers Configured in the Print Server Back End == |
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# mkdir -p /srv/samba/Printer_drivers |
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Using the default setting, all printers configured in the print server back end are automatically shared. |
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* For special permissions on the share, set them on the folder on *nix side (Samba 3) or through windows (Samba 4). |
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* Next we create the required directory structure for the print$ share (newer versions of Samba can create it on the fly when uploading): |
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BASEDIR=/srv/samba/Printer_drivers |
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for i in COLOR IA64 W32ALPHA W32MIPS W32PPC W32X86/{2,3} WIN40 x64; do |
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mkdir -p $BASEDIR/$i; |
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done |
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=== Disabling the Automatic Printer Sharing === |
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* At last, set the appropriate permissions, depending to your needs. Example: |
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To disable the automatic printer sharing: |
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# chmod -R 755 /srv/samba/Printer_drivers |
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* Add the following parameter to the <code>[global]</code> section of your <code>smb.conf</code> file: |
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load printers = no |
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* Reload Samba: |
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* For each printer you want to share via Samba, you have to create a separate share. The following is an example: |
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[MyDemoPrinter] |
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path = /var/spool/samba/ |
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browseable = yes |
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printable = yes |
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printer name = Printername_in_backend |
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* Set the „printer name“ parameter to the name of your corresponding CUPS/LPD/... queue. |
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* To bring the changes live, reload the Samba configuration: |
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# smbcontrol all reload-config |
# smbcontrol all reload-config |
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== Manual Sharing of Printers == |
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== Uploading printer drivers for Point'n'Print driver installation== |
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To manually share a printer: |
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If you have already uploaded the driver for your printer in the past, you can skip this section. |
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* Verify that the automatic printer sharing is disabled. See [[#Disabling_the_Automatic_Printer_Sharing|Disabling the Automatic Printer Sharing]]. |
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If you have to provide a printer driver for x86 and x64 plattforms, you have to upload them from a x64 machine. A x86 client can only upload x86 drivers, while a x64 client can do both. |
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* Add the share for the printer to your <code>smb.conf</code> file: |
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It's important, that if you want to provide printing support for multiple plattforms on one printer, that you upload drivers for both, that have exactly the same driver name! Otherwise, the driver for the different plattforms can't be associated. |
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[''Samba_printer_name''] |
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The following steps are done on Windows7 64-Bit, to allow uploading x86 and x64 bit drivers, which should work for Windows 2000 to Windows 8. |
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path = /var/spool/samba/ |
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printable = yes |
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printer name = ''printer_name_in_the_back_end'' |
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: Set the <code>printer name</code> parameter to the name of the printer used in the local print server back end. |
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* Logon with an account, that has [[#Granting_print_operator_privileges|granted print operator privileges]] to. |
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* Reload Samba: |
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* Go to \\YourPrintserver and click the „View remote printers“ button |
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:[[Image:Server_Share_List.png]] |
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* You will see a list of all printers you have shared. |
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: [[Image:View_remote_printers.png]] |
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* Right-click somewhere in the empty part of the window and choose „Server Properties...“ from the appearing context menu. |
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* Next go to the „Drivers“ tab and click the „Add...“ button. The „Add Printer wizzard will appear. |
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* Select the driver architecture you want to upload (upload one by one) and click „Next“. |
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* Click the „Have Disk...“ button and browse to the directory containing the driver you want to upload. |
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* The wizzard will show you a list of all drivers, the directory you pointed to, contains. Select the appropriate driver for your printer and click „Next“. |
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:[[Image:Printer_driver_selection.png]] |
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* In the end, the wizzard will copy all required files to the print$ share of your print server. |
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* If you want to upload drivers for a different plattform or other devices, repeat the steps. |
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== Associating a shared printer with a driver and preconfiguring== |
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* Logon with an account, that has [[#Granting_print_operator_privileges|granted print operator privileges]] to. |
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* Go to \\YourPrintserver and click the „View remote printers“ button. |
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:[[Image:Server_Share_List.png]] |
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* You will see a list of all printers you have shared. |
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:[[Image:View_remote_printers.png]] |
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* You could do the association of the driver with the printer share on Windows or on *nix side: |
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:* On Windows: |
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::* Right-click to the shared printer, you would associate a driver with and choose „Properties“. |
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::* If there's no driver associated with an printer yet, you'll been asked if you want to install the driver now. Answer this question with „No“! |
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:::[[Image:Question_install_driver.png]] |
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::* A default printer properties window will appear. Go to the „Advanved“ tab and choose the already uploaded driver from the list, that is suitable for the printer. |
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:::[[Image:Choose_driver.png]] |
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::* Close the windows with „OK“ to associate the driver with the printer. |
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::* If you do this step on Vista or higher, Windows will ask you, if you trust the server (This can' be suppressed by a GPO. See [[#Setting_up_a_GPO_for_trusting_printer_drivers|Setting up a GPO for trusting printer drivers]]). Choose „Install driver“, if you are seeing this window. |
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:::[[Image:Question_trust_printer.png]] |
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::* After associating the driver, Windows renames the printer to the driver name. You can leave that or rename it again. For more clearness, it's better to set the name on Windows side to the one you used in your smb.conf. |
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:* On *nix: |
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::* Retrieve a list of all drivers, that are on the print$ share <pre># rpcclient localhost -U administrator -c 'enumdrivers'</pre> |
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::* Associate the driver with the printer (The driver name, must be exactly the same, like in the output of the above „enumdrivers“ output): <pre># rpcclient localhost -U administrator -c 'setdriver "MyDemoPrinter" "HP Universal Printing PS"'</pre> |
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::* You can review the associations with <pre># rpcclient localhost -U administrator -c 'enumprinters'</pre> |
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* On Windows, now right-click and choose „Properties“ again, to preconfigure the printer. |
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* First you should take a look on the tabs on the properties windows. Typically there's a tab called „Device Settings“, „Settings“, „Configuration“ or something like that (depending on the driver). This usually allows you to configure the main printer settings (number of trays, duplex on/off, etc.). Set the values fitting to your device and click the „Apply“ button. |
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:[[Image:Device_Settings.png]] |
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* On the „Sharing“ tab, you can check „List in the directory“, to publish the printer in your Active Directory, what makes it easier for users to find. |
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* To preconfigure the printers default settings, go to the „Advanced“ tab and click the „Printing defaults...“ button. A new window will appear. It's layout and possibilities differ and depent on the driver. Here you can set the default values, the user will receive, when connecting the printer. |
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:[[Image:Printing_defaults.png]] |
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* If you have finished configuring your printer, save all changes with „OK“. |
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If you had uploaded drivers for multiple architectures to that printer, the settings will be retrieved connecting on the different plattforms - regardless on which they have been set. But as mentioned earlier, this requires, that all drivers for each plattform have the same name (versions can differ). |
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Now it's time to connect to the printer and print a test page. |
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= Setting up a GPO for trusting printer drivers = |
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To keep the following guide simple, we setup the policy in the „Default Domain Policy“. If you have different requirements, adapt it to your needs. |
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* Open the Group Policy Management console. |
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* Go to „Forest: your.domain“ / „Domains“ / „your.domain“ |
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* Right-click „Default Domain Policy“ and choose „Edit“ to open the Group Policy Management Editor. |
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:[[Image:Edit_group_policy.png]] |
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* Navigate to „Computer Configuration“ / „Policies“ / „Administrative Templates“ / „Printers“ and double-click to the „Point and Print Restrictions“ Policy (if you want to setup the policy on a per-user base instead of machine-base, go to the same path, but just in the „User Configuration“ branch). |
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* Enable the policy and set „When installing driver for a new connection“ and „When updating drivers for an existing connection“ each to „Do not show warning or elevation prompt“. You can restrict the policy in that window to prevent the warning just for defined hosts, too, if required.. |
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:[[Image:Point_and_print_restrictions.png]] |
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* Save the changed policy by clicking „OK“ and closing the windows. |
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After the clients have refreshed their policies (per default every 90 minutes, with a random offset of 0 to 30 minutes), the warning won't be shown up any more. The policy refresh can be forced by |
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> gpupdate /force /target:computer |
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# smbcontrol all reload-config |
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= Enabling new paper sizes (Forms) = |
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= Setting up Automatic Printer Driver Download for Windows Clients = |
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Only standard sizes of formulars are included by default. If you require other forms, you have to add them. |
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See [[Setting_up_Automatic_Printer_Driver_Downloads_for_Windows_Clients|Setting up Automatic Printer Driver Downloads for Windows Clients]]. |
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* Logon with an account, that has [[#Granting_print_operator_privileges|granted print operator privileges]] to. |
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* Go to \\YourPrintserver and click the „View remote printers“ button |
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:[[Image:Server_Share_List.png]] |
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* You will see a list of all printers you have shared. |
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:[[Image:View_remote_printers.png]] |
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* Right-click somewhere in the empty part of the window and choose „Server Properties...“ from the appearing context menu. The print server forms tab appears. |
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* Check „Create a new form“, and fill the values. In the end click „Save Form“, to save your changes. |
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:[[Image:Create_new_form.png]] |
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---- |
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The new added paper sizes will be selectable from all printer dialogs now. |
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[[Category:Active Directory]] |
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[[Category:Domain Members]] |
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[[Category:NT4 Domains]] |
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[[Category:Printing]] |
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[[Category:Standalone Server]] |
Revision as of 12:03, 18 October 2017
Introduction
If you set up Samba as a print server, clients in your network are able to send print jobs to the Samba host using the server message block (SMB) protocol. The examples shown in this documentation use a raw printer in the back end. This configuration requires that the print job is formatted by a driver on the client and thus can be processed by the printer without further processing or filtering.
Supported Print Server Back Ends
Samba supports the multiple print server back ends, such as CUPS and LPRng. For a complete list, see the printing
parameter in the smb.conf(5)
man page.
You must set up the printer server back end locally on the Samba host. Samba cannot forward print jobs to a remote host. However, you can configure the local printer server back end to forward the job to a remote print server. |
For details how to set up the back end, see the print server's documentation.
Samba CUPS
or IPRINT
Back End Support
When using the CUPS
or IPRINT
print server back end, Samba must have been built with CUPS support enabled. To verify, enter:
# smbd -b | grep "HAVE_CUPS" HAVE_CUPS
If no output is displayed:
- Samba was built using the
--disable-cups
parameter. - The Samba
configure
script was unable to locate the required libraries for CUPS support. For details, see Package Dependencies Required to Build Samba.
Adding a printer to the Print Server Back End
CUPS
To add a raw printer to an CUPS print server:
- Open the CUPS admin web interface in your browser. For example, https://servername:631/admin
- Select the
Administration
tab and clickAdd Printer
.
- Select the connection type and enter the corresponding URL to the printer's queue or to the remote print server queue. For example:
- LPD-based printers:
lpd://printer_name/queue
- IPP (Internet Printing Protocol)-based printers:
ipp://printer_name/ipp/port
- SMB (Server Message Block)-based printers:
smb://username:password@domain/windows_print_server_host_name/printer_name
- Note that forwarding a job to a print server running Windows Vista or newer, or Windows Server 2008 or newer requires authentication.
- LPD-based printers:
- Enter a name for the printer. This name is used in the
smb.conf
when sharing the printer using Samba.
- Select the
Raw
printer vendor and model.
- Save the settings.
LPRng
To add a raw printer to a LPRng print server:
- Add the following line to the
/etc/printcap
file:
printer_name:sd=/var/spool/lpd/printer_name/:sh:mx=0:mc=0:rm=Printer_DNS_name_or_IP_address
- The printer name is used in the smb.conf when sharing the printer using Samba.
- For further details about the options used, see the
printcap(5)
man page.
- To create the spool directory, enter:
# checkpc -f
- Restart the LPRng service.
Enabling the spoolssd
Service
The Samba spoolssd
is a service that is integrated into the smbd service. If you configured Samba as a print server, you can additionally enable spoolssd
to:
- Support package-aware Windows drivers.
- Increase performance on print servers with a high number of jobs or printers.
- Without
spoolssd
, Samba forks thesmbd
process or each print job and initializes theprintcap
cache. In case of a large number of printers, thesmbd
service can become unresponsive for multiple seconds when initializing the cache. Thespoolssd
service enables you to start pre-forkedsmbd
processes that are processing print jobs without any delay. The mainspoolssd
smbd
process uses a low amount of memory, and forks and terminates child processes
To enable the spoolssd
service:
- Edit the
[global]
section in yoursmb.conf
file:
- Add the following parameters:
rpc_server:spoolss = external rpc_daemon:spoolssd = fork
- Optionally, you can set the following parameters:
Parameter Default Description spoolssd:prefork_min_children 5 Minimum number of child processes spoolssd:prefork_max_children 25 Maximum number of child processes spoolssd:prefork_spawn_rate 5 Samba forks this number of new child processes, up to the value set in spoolssd:prefork_max_children
, if a new connection is establishedspoolssd:prefork_max_allowed_clients 100 Number of clients, a child process serves spoolssd:prefork_child_min_life 60 Minimum lifetime of a child process in seconds. 60 seconds is the minimum.
- Restart Samba.
After the restart, Samba automatically starts smbd
sub-processes:
# ps axf ... 30903 smbd 30912 \_ smbd 30913 \_ smbd 30914 \_ smbd 30915 \_ smbd ...
Enabling the Print Server Support in Samba
To enable the print server support:
- Set the printing back end in the
printing
parameter of the[global]
section in yoursmb.conf
file. For example:
printing = CUPS
- Add the following section to your
smb.conf
:
[printers] path = /var/spool/samba/ printable = yes
- Create the spool directory set in the
path
parameter:
# mkdir -p /var/spool/samba/ # chmod 1777 /var/spool/samba/
- Reload Samba:
# smbcontrol all reload-config
Sharing a Printer
Automatic Sharing of All Printers Configured in the Print Server Back End
Using the default setting, all printers configured in the print server back end are automatically shared.
Disabling the Automatic Printer Sharing
To disable the automatic printer sharing:
- Add the following parameter to the
[global]
section of yoursmb.conf
file:
load printers = no
- Reload Samba:
# smbcontrol all reload-config
Manual Sharing of Printers
To manually share a printer:
- Verify that the automatic printer sharing is disabled. See Disabling the Automatic Printer Sharing.
- Add the share for the printer to your
smb.conf
file:
[Samba_printer_name] path = /var/spool/samba/ printable = yes printer name = printer_name_in_the_back_end
- Set the
printer name
parameter to the name of the printer used in the local print server back end.
- Reload Samba:
# smbcontrol all reload-config
Setting up Automatic Printer Driver Download for Windows Clients
See Setting up Automatic Printer Driver Downloads for Windows Clients.