White toner printers have no black toner, how can I still print black?
When it comes to printing, there are two types of black: Composite black and solid black. The CMYW printer can’t print solid Black anymore (just black toner) but it can still print composite black which is black created by adding cyan, magenta and yellow together in the same amount. Strictly this should be less black as solid black but in a full color image this is hardly or not at all visible. In a pure black image you might see the image is a bit brownish on a CMYW printer when compared to a CMYK printer.