I'm pretty sure the Unicolor was compatible with Kodak Type R chemistry and was just a different paper. The Unicolor chemistry also worked with the Kodak, or at least Unicolor made chemistry that did because I used it a lot. The Type 1993 that someone mentioned was an earlier version. I used quite a bit of the next version (I read about 1993 when I was doing only B&W but by the time I got around to trying it the next version was out) which I believe was 2203 or 2223. A quick check of Google doesn't turn up the exact number but I'm sure one could find it. I believe there was a later version called Radiance which may have been the last Type R paper Kodak made.