Hi,
While Invoicing around 250 sales orders, a huge number of Billing documents/Invoices are getting created (around 200 in no.) and the output (for Printing) has been configured in such a way that it prints the Invoices immediately.
When the physical Invoices are being checked at the printer, the user finds only couple of them printed (around 20 to 30). The spool shows a green status which according to my understanding is that the jobs are sent to the printer and are waiting for print. But unfortunately, they do not get printed immediately. Instead, when we print something else (from a word, excel..etc) all the rest of Invoices which were waiting for print comes out of the printer.
a. Is this a memory issue ?
b. or Is it a configuration issue?
c. or Is it a printer issue?
d. or Is it a network issue (couldnt be a network issue as this never happened before until now)?
e. Should a batch job creation help in overcoming this issue? 
Please let me know what could be the issue or advise how to approach this problem.
Thanks,
Himanshu.