Digital BW, The Print

David, R220 and R800 are the model no. of Epson printer.

http://www.epson.com/cgi-bin/Store/consumer/consDetail.jsp?
BV_UseBVCookie=yes&infoType=FandB&oid=58654761&category=Products

http://www.epson.com/cgi-bin/Store/consumer/consDetail.jsp?
BV_UseBVCookie=yes&infoType=FandB&oid=37472319&category=Products

The 3MK and UT-3D are inkset that MIS sells;
http://www.inksupply.com/qn.cfm

Alternatively, you can also try Cone K7 inks;
http://shopping.netsuite.com/s.nl/c.362672/sc.15/category.1238/.f

Or: http://www.mediastreet.com/site/generations_gq.html

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "David" 
<dkfreed@...> wrote:
>
> I assume that R800 and R220 are printer numbers, but I don't know 
what
> 3MK and UT-3D mean?  
> 
> David.