some black zones on my work appear gray in print preview and when printing

[AtomTik]

When I print some areas are gray instead of black. I can actually see them in the print preview. They seem to match the blue lines when I select some objects. Thanks for any input.

[walt.farrell]

What color format is your document, and what color are the areas that seem to print gray rather than black?

[AtomTik]

CMYK/8 and HSL: 11 28 2. I'm pretty new to this game  Thanks

[walt.farrell]

Thanks.

I would normally use RGB (rather than CMYK) for a home printer, and I don't have any specific experience with your printer, but for CMYK I would probably choose that color.

Are you using Coated paper? If not, an Uncoated color profile might be better (but again, I don't usually print in CMYK at home, and never with your printer).

[AtomTik]

Thank you Walt.

Yes I use Red River Paper Polar Matte.