TTF or True Type Fonts are more close to their printed counter parts. TTF technology was developed by Microsoft and Apple Corporation because they decided that the monopoly on PostScript enjoyed by Adobe was not good for their business. Hence, True Type Fonts work equally well under both Windows and Macintosh operating systems.
TTF can be used for publishing needs wven though the work may finally go thru a PostScript device like as imagesetter. However, problems will crop up when the True Type Font and the PostScript font have the same names.