And I don't think "intaglio screen" was/is commonly used by those photo-gravure artists, tho it was/is with roller-gravure (as became common with newspapers).
A screen of some sort is needed for any intaglio process. With contemporary direct to plate processes, this is either a stochastic pattern overlay added manually during digital processing, or the (inkjet) printer's native dither is employed. With old-fashioned copper plate based on a gelatin/dichromate positive, an intaglio screen or aquatint/rosin screen is used. Whichever way it is done, some sort of screen is required in order to hold the ink.
Thanks for the link to Kachel's page, the work of people like Stieglitz and Curtis featured on the link is certainly inspiring.
Evidently, my remark on the process with DK3 working "quite alright" referred to my personal experience with it. I believed this to be quite clear from the context of my post.
Does his work seem "superior in this respect" to DK3?
As far as I can tell, Kachel uses ImagON HD which is quite similar to DK3 I understand. However, there are many ways to design a workflow using either of these materials and hence, the material used itself doesn't tell the complete story. They're both thin photopolymer films that are adhered to a suitable base material, used either as the intaglio itself, or as a resist for etching the support after which the photopolymer is washed off entirely. As I understand, Kachel, like myself, opted for the former.