How to install HP_LaserJet_1020 Printer in Knoppix?

[Werner P. Schulz]

Did you have selected the button "+Add"?

After installing your Printer do right-mouse-click to the printer symbol and mark - if not already done - "Enabled" and "Shared"

[gss]

The printer is marked Enabled and Shared.

[Werner P. Schulz]

Try once more "Preferences => Printing => [+Add]"
install the Laserprinter again, select this second installed printer and set it as default, shared and enabled.

[gss]

Thanks for your help Werner. I've performed some tests and:
after rebooting system there is no possibility to print for CUPS server is not started.
Even if I try to go to: Menu -> Preferences -> Printing nothing can be done for the answer is: printing is not available,
As I try to connect to localhost the answer is: can't connect to localhost
After Menu -> Preferences -> Printer configuration CUPS is invoked, started and then I can close internet browser
and go to: Menu -> Preferences -> Printing and then I can see my printer and with properties Enabled ; Shared.
Printing is possible.
I presume CUPS demon is not started at the starting of the system and this is the problem.
It's OK I don't need to print every time i start the computer but I need to know how to put printer in action
I have to check one more situation - the printer is switched on after the system boot. I need to know whether
the firmware is loaded just after switching the printer on (should be recognized by hot-plug) or some action has to be taken.
You know its the question of economy I do not need the printer be on all the time. Anyhow I use it at home and don't print a lot.
(I bought Laser printer when my children were at school and then I was very useful now I print something from time to time)

[Werner P. Schulz]

Please post the content of '/etc/cups/printers.conf'

[gss]

Ok /etc/cups/printers.conf says:

# Printer configuration file for CUPS v1.5.3
# Written by cupsd
# DO NOT EDIT THIS FILE WHEN CUPSD IS RUNNING
<DefaultPrinter HP_LaserJet_1020_USB_FN2J3XV_HPLIP>
UUID urn:uuid:b64138b0-8988-3332-7fb6-7dbeebef5056
Info HP LaserJet 1020
Location Local Printer
MakeModel HP LaserJet 1020 Foomatic/foo2zjs (recommended)
DeviceURI hp:/usb/HP_LaserJet_1020?serial=FN2J3XV
State Idle
StateTime 1373615997
Type 8425476
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
AllowUser knoppix
OpPolicy default
ErrorPolicy stop-printer
</Printer>

Anyhow I checked the situation when printer is switched on after the system boot. It's OK firmware is loaded just after switching on the printer.
As for me the Thread can be closed. The printer is working and the only problem with starting CUPS before first printing is not so important - anyhow you have to do it only once.