Adobe Not Closing After Check Printing

I am having an issue with check printing from our ERP software thru Adobe Acrobat Reader.  When our checks pass from our document routing agent, Adobe opens up and automatically will send the document to the printer successfully.  But, it doesn't close the application and therefore when the next set of checks are printed, Adobe does not trigger the send to the printer.  If a user closes the Adobe Acrobat Reader after the first check print and then prints the next set of checks, it will successfully send to the printer.  Has anyone encountered this issue and are there settings within Adobe that we can set to fix this?  We want the application to auto close to be able for the next set of checks to print.