For digital printing services, do not spend much on buying the printer to print bulk items. It is widely accepted that it is not economical to run large prints on home printers. You need the service of print professionals who use commercial digital printer or offset lithographic printer.  Instead of purchasing heavy duty machines, you can employ the service of either online or local digital printing service providers, lithographic printers, and T-shirt printers. Send in the customized item you wish to print and get the item at your doorstep. There are many copies and print shops which you can reach out to get the hard copy of the document. 
Degital Printing processes require special attention to the details which you may not be able to fulfill. The print professionals are aware of the basics and provide you with high-quality digital prints which you are looking for. For digital printing, you need to have heavy machines which can keep the colors accurate and high-quality prints for you. It is better to depend on the print shops which you can access conveniently and find the ease of printing your desired items with high-quality material.