HGP Mincho B is a Japanese font, specifically a Mincho-style font, which is a traditional style of Japanese typography. The font is designed for use on computers and is commonly used in desktop publishing and other applications where Japanese text is required.
If you are referring to "deep text" in a design or semantic sense, HGP Mincho B is often chosen for: hgp mincho b
Here's a report on HGP Mincho B: