8.5. Modifying Existing Printers
To delete an existing printer, select the printer and click the
Delete button on the toolbar. The printer is removed
from the printer list. Click Apply to save the
changes and restart the printer daemon.
To set the default printer, select the printer from the printer list and
click the Default button on the toolbar. The
default printer icon 
appears in the Default column of the default printer in
the list.
After adding the printer(s), the settings can be edited by selecting the
printer from the printer list and clicking the Edit
button. The tabbed window shown in Figure 8-6 is
displayed. The window contains the current values for the selected printer.
Make any necessary changes, and click OK. Click
Apply in the main
Printer Configuration Tool window to save the changes and
restart the printer daemon.
8.5.1. Queue Name
To rename a printer or change its short description, change the value in
the Queue name tab. Click OK
to return to the main window. The name of the printer should change in the
printer list. Click Apply to save the change and
restart the printer daemon.
8.5.2. Queue Type
The Queue type tab shows the queue type that was
selected when adding the printer and its settings. The queue type of the
printer can be changed or just the settings. After making modifications,
click OK to return to the main window. Click
Apply to save the changes and restart the printer
daemon.
Depending on which queue type is chosen, different options are displayed.
Refer to the appropriate section on adding a printer for a description of
the options.
8.5.3. Printer Driver
The Printer driver tab shows which print driver is
currently being used. If it is changed, click OK to
return to the main window. Click Apply to save the
change and restart the printer daemon.
8.5.4. Driver Options
The Driver Options tab displays advanced printer
options. Options vary for each print driver. Common options
include:
Send Form-Feed (FF) should be selected if
the last page of the print job is not ejected from the printer
(for example, the form feed light flashes). If this does not
work, try selecting Send End-of-Transmission
(EOT) instead. Some printers require both
Send Form-Feed (FF) and Send
End-of-Transmission (EOT) to eject the last page. This
option is only available with the LPRng printing system.
Send End-of-Transmission (EOT) should be selected if sending a
form-feed does not work. Refer to Send Form-Feed
(FF) above. This option is only available with the LPRng
printing system.
Assume Unknown Data is Text should be
selected if the print driver does not recognize some of the data sent
to it. Only select this option if there are problems printing. If this
option is selected, the print driver assumes that any data that it can
not recognize is text and attempts to print it as text. If this option
is selected along with the Convert Text to
Postscript option, the print driver assumes the unknown
data is text and then converts it to PostScript. This option is only
available with the LPRng printing system.
Prerender Postscript should be selected if
characters beyond the basic ASCII set are being sent to the printer
but they are not printing correctly (such as Japanese
characters). This option prerenders non-standard PostScript fonts
so that they are printed correctly.
If the printer does not support the fonts you are trying to print,
try selecting this option. For example, select this option to print
Japanese fonts to a non-Japanese printer.
Extra time is required to perform this action. Do not choose it
unless problems printing the correct fonts exist.
Also select this option if the printer can not handle PostScript
level 3. This option converts it to PostScript level 1.
GhostScript pre-filtering — allows you
to select No pre-filtering, Convert to
PS level 1, or Convert to PS level 2
in case the printer can not handle certain PostScript levels. This
option is only available if the PostScript driver is used with the
CUPS printing system.
Convert Text to Postscript is selected by
default. If the printer can print plain text, try unselecting this
when printing plain text documents to decrease the time it takes to
print. If the CUPS printing system is used, this is not an option
because text is always converted to PostScript.
Page Size allows the paper size to be
selected. The options include US Letter, US Legal, A3, and A4.
Effective Filter Locale defaults to
. If Japanese characters are being
printed, select . Otherwise, accept
the default of .
Media Source defaults to
. Change this option to
use paper from a different tray.
To modify the driver options, click OK to return to
the main window. Click Apply to save the change and
restart the printer daemon.
