My impression is that the Epson driver, even with ABW, always uses some of the color inks. I assume this is for both smoothness and to keep the color positions from getting clogged.
Also, if you really want pure carbon, I think you'll have to switch to a third part ink. The Epson LK, LLK, and PK are not, as far as I can tell, 100% carbon.
I'm using MIS or STS carbons in my black and white setups. A variety of b&w setups are described in pages linked to http://www.paulroark.com/BW-Info/ .
Paul
I know I have had this question in my mind numerous times, but I cannot find an answer to it in the archives, so I must not have asked it before:In the Epson Advance Black & White / Advanced Colour Settings panel, what horizontal and vertical settings in the colour-wheel or chart use the least amount of ‘color’ ink?One would hope that absolute centre - - 0,0 - - would be the answer, but while that setting is appropriately carbon-warm, microscopic examinations I have seen online show a mix of colour inks as well as the expected blacks.Have any of you done a careful examination of what ABW actually does? Do you know of any reliable online information about it?Yes, using QTR can produce the results I want, but sometimes I don’t have QTR installed on the computer at hand (I print over my wifi system to a 3880).Thanks!Myron