[svat]

(1988)

> This article was first published as "‘PostScript’ prints anything: a case history." It appeared in the May 1988 issue of IEEE Spectrum. […] The diagrams and photographs appeared in the original print version.

So the article is from 1988, except for the update at the bottom:

> Update April 2022: While most home and office printers rely on other page description languages these days, PostScript remains the choice of graphics artists and commercial printers for its ability to accurately produce complex images. And the ubiquitous Portable Document Format (PDF) is based on PostScript.