I am sorry, but to get your issue more exposure I would suggest posting it in the commercial forums since this is a commercial printer. You can do this at http://h30499.www3.hp.com/hpeb/
Here is link to find your printer drivers.
http://www8.hp.com/us/en/support-search.html?tab=2#/qryterm=laserjet%202300&searchtype=s-001
I hope this helps.