Try without space (eg. nsrlpr -PRICOH).

If that doesn't work try nsrlpr -P "RICOH" and check printer queue. When I do

C:\>nsrlpr -P "HP Color LaserJet 5"

I see document being spooled for given printer.

Set it at notification level.

1. When I run command C:\nsrlpr -P "RICOH"
it not any print to printer

2. run command C:\nsrlpr -P "RICOH"
it can print file to printer.

3. Set parameter " nsrlpr -PRICOH " and " nsrlpr -P "RICOH" " at group.
it don't have any thing to print.

I had to tries to set many thing on priority and action at Notification but it can't print.
Does you have exsample picture about the setting?.

Assuming your NetWorker installation path is in executable path and "RICOH" is a system defined printer something like this should work for you:
echo "ABCD" | nsrlpr -PRICOH

For the bootstrap printout he value RICOH is entered in NW group resource in Printers field.
Next have a notification created for the bootrap, or better modify the existing notification with the Action field like this:
nsrlpr -P%PRINTER

Please keep in mind that for bootstrap only one notification can be created.
I don't know about the reason this being restricted.

HTH

Regards

At this point you should talk to your support.