Retain print spool until printer available?
As all macs using cups for printing, you can manage it with a web interface. To enable it, you have to type:
cupsctl WebInterface=yes
Then you should be able to check print server configuration, printers and queues from:
http://127.0.0.1:631/
If you enter in this website, under Administration → Server, click on Advance and yo must see something like the following image:
As you can see, you will be able to modify the Retain Documents parameter, that is the amount of time a Document stay on the printer queue.