What is JIS2004 attached at the end of font names?

These are the fonts which support JIS2004 character shape. 

It means that these fonts conform to the JIS2004 letterform standard.

Click here for more information about JIS2004.

The letterforms of some of the letters in fonts with JIS2004 may differ from those without JIS2004 at the end of the font name.

Please pay attention when you are switching from one font to another.