This is not usually noticeable, because TeX distributions now use a Type 1 version of CM, distributed by AMS, when compiling documents to PostScript or PDF. (Or, they use Latin Modern, which is based on this Type 1 version which is so spindly in the first place.)
To use an adaptation which is thicker in print, and which uses the original METAFONT settings, check out mpfonts: https://ctan.org/pkg/mpfonts.
However, note that on screen, mpfonts usually doesn't look so great, since the fonts are Type 3 adaptations of the METAFONT programs and not Type 1 fonts.
To use an adaptation which is thicker in print, and which uses the original METAFONT settings, check out mpfonts: https://ctan.org/pkg/mpfonts.
However, note that on screen, mpfonts usually doesn't look so great, since the fonts are Type 3 adaptations of the METAFONT programs and not Type 1 fonts.