MacBook Pro 2.7 GHz Intel Core i7 16GB Retina Display. Epson Stylist Photo R320.
When I print Black and White photos that were selected as Black and White in Photoshop, they all print the 50% grays with a Greenish tint. it's like it wants to add missing colors. I changes All the inks and it still occurs. "Photoshop manages colors" profile, "sRGB IEC61966-2.1 Normal Printing. Relative Colorimetric. Using Photo paper.
Can anyone tell me why?
If Photoshop manages color, you need to pick the correct profile for the printer/paper. The profile will be called something like e.g. <printer name> Epson Premium Glossy, if that's the paper you're using.