Complex sentence: Type 1 and Type 3 fonts though introduced by Adobe in 1984 as part of the PostScript page description language, did not see widespread use until March 1985, when the first laser printer to use the PostScript language, the Apple LaserWriter, was introduced.
Split into simpler sentences: Type 1 and Type 3 fonts were introduced by Adobe in 1984 as part of the PostScript page description language. They did not see widespread use until March 1985, when the first laser printer to use the PostScript language, the Apple LaserWriter, was introduced.