If you are serious going with this , I advise you to use rotogravure elliptical screening like National Geographic Magazine uses. I think you can go from more ordinary way and get your scan file and send to prepress shop via email and if you want a black and white , order the cyan rotogravure screened film.
If they have automatic printer with a developer , it takes their 5 minutes.
At 1994 , AGFA presented crystal screening and it was made using smallest screening dots and density of them. I am far from the sector for 10 years but I think Heidelberg , AGFA , Kodak , Fuji have screen printers. Visit them , learn their technology , select one , find a prepress office who does it and voila.