If you have lots of printers (50 or more) and need to lock them for maintenance, you can used this mass locked printers tips to locked or unlocked all the SAP printers at one go.

To mass Lock all the printer in SAP:

Go to transaction code SPAD

On top of the screen menu click Utilities -> For output devices -> Export devices

On the screen Import and Export of Device Descriptions:

Export/Import file name: c:\temp\printer.txt

Frontend computer: Tick

Export: Tick

Export Export: Tick

Output device: Choose the Selection options Pattern and type a * 
                       (* for all or a* for all printers starting with a)

Click the Execute button

Open the text file do a replace all of PADISABLED = "" to PADISABLED = "X"

Then import the same file. 

or

Another way is to go through each output device in SPAD and click on 'Lock Printer in SAP System' which is in the DeviceAttributes tab 

To print your reports to a list of SAP printers
Parallel printing to all the SAP device printers

Setting up an USB printer in SAP
Print to an USB printer from SAP

Configure your Output Device into PDF file
Auto convert spool output to PDF file

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