How can we print payroll checks to over 100 different printers securely

Summary:

We need to be able to control the PDFs docs printing, they get created on Monday, but the plant is not ready to print until Friday, over 100 printers all over the country, and the printers are on the internal network, used by mainframes, servers, laptops, so they must be able to control when to release the doc to print in order to change to check stock and put in the micr cart - plus so far the instructions I have found -assume one check printer - we process payroll with 4 people at corp, the checks need to dist