Well, we've come across a "freebie" that we found on the web that will do just that.
In case you are unfamiliar with halftone printing, to be able to screen print photographic or grayscale images, an image must be converted into what is known as "halftones."
The Wilflex easy art website offers a free download for printing halftones through any laser or ink jet printer using a set of "actions" that you would load into Adobe Photoshop. You must have Adobe Photoshop to be able to use this utility. While you are on the site, check out the free "registration mark" download–another useful printing utility that you can use in Adobe Photoshop. The Easy Art website also contains other useful information and tutorials for screen printing halftones and index prints. http://www.wilflexeasyart.com/
P.S. Would you like to see another easy way to create a halftone image for screen printing? Check out our tutorial: How to Create a Halftone Image for Screen Printing-Fast, Easy and Free.