The 1 bit tiffs are embedded in the Process Job ID folder. See screen shot attached. If you have your HF set to "cleanup" & "export" your Process Job ID's, you can save the 1 bit tiffs after you make plates. The cool thing is Trueflow generates the 1 bit tiffs for the entire job before the platesetter even asks for the first plate...so if you wanted to save the tiff without making any plates, you could steal them from: E:\TrueflowWork\procjob (just find the Process Job ID that TF has assigned to the specific job and "copy"). One thing you'll notice is the extensions on the files are not ".tif", but .K, .M, .C, .Y, .S1, .S2 etc. You can still view in Photoshop if you change the extension to ".tif". Good Luck!
I was quoted $10,000 just for that option to be turned on...no thanks. That is ridiculous! I save my Process Job IDs anyway, so it really isn't any extra trouble to drag my dot-tiffs into the shortcut I placed in the Mac's sidebar when I want to replate something. Don't get me wrong, I love Trueflow and maintain that it's the best workflow solution with unrivaled automation. I just think their pricing for Dot-Tiff output and Trap-Editor are absurd. It's like someone giving you the BEST automatic rifle, but charging you $50 for each bullet...you'll learn real quick how to make your own bullets.
We have a nice tool for working with 1 bit TIFF files - including the ability to create high res online zoomable proofs from them. I would love to work with you to set this up with your Screen system.