PrintaRonchi.exe is a small Windows program for drawing Ronchi screens. It works only in pixels (dots on a printer). More than likely, your printer is not capable of drawing at the resolution required. One idea would be to blow up the image up by say x10 and then photo-reduce it. This is a very simple program using very basic stuff. I wrote it because I was amazed that I couldn't find an existing program like it.

You can run this program now by clicking on the above link. Assuming you have done this, note that the default line widths (Edit > Ronchi screen) are 2 black pixels and 4 white pixels with a width and height of 600 pixels. On a 600 dpi printer this will give you 100 lpi on a one inch square. Try printing it and look at the result with a 1" eyepiece turned in the wrong direction. To blow it up by a factor of ten, change the above numbers to 20, 40, 6000. It prints only one page.

Of course the object is to print this on transparency paper. A laser printer can do this but I don't know about ink jets. You might have to get a hold of Kinko's in either case.

Tom Stokes, Feb. 2011.