Displaying CUPS shared printers in a user’s printer list on OS X Lion

From this page:

smb
This backend sends print files to printers shared by a Windows host. Examples 
of CUPS device-URIs that may be used includes:

    smb://workgroup/server/printersharename
    smb://server/printersharename
    smb://username:password@workgroup/server/printersharename
    smb://username:password@server/printersharename

The smb:// backend is a symlink to the Samba utility smbspool (does not ship with
CUPS). If the symlink is not present in your CUPS backend directory, have your 
root user create it: ln -s `which smbspool' /usr/lib/cups/backend/smb .

Looks like starting in Vista the default number of printers published is 20 printers.

Here's a quick run down and link to info on it:

Printer Number Limitation related Policies

1. Click Start icon, then select Run...

2. Type gpedit.msc and press Enter. Click Continue if receiving UAC prompt.

3. Locate to two GPOs: Computer Configuration -> Administrative Templates -> Printers -> Add Printer wizard - Network scan page (Managed network) and Network scan page (Unmanaged network).

4. Double-click to change the configurations.

   The AD-based Network Search in Managed Network

   If wizard of adding network printer detects that the machine is on a managed network and the user is authenticated against the AD server it will attempt to do the following searches:

   It queries the AD for printers. This works similarly to the Find Printers dialog in that it uses the same code to determine the user’s location and tries to find printers in the user’s location. It is different from the Find Printers dialog in that it uses the GC to query for printers instead of “Entire Network”.

The net search page will only show the first 20 AD printers it finds by default. If there are more than 20 printers that meet the location parameter on the query the search will simply return the first 20 that AD happens to return—this is effectively random in my experience.

The Location Parameters

1. Click Start icon, then select Run...

2. Type gpedit.msc and press Enter. Click Continue if receiving UAC prompt.

3. Locate to two GPOs: Computer Configuration -> Administrative Templates -> Printers -> Computer Location and Pre-populate printer search location text.