Where did you start with Micro controllers?

Printronix did make one the earliest 'dot matrix' printers in 132 column version. Dec also made an early 132 column dot matrix for their minicomputer systems, the famous LA-36 printer.

The Printronix I'm thinking of was a high-speed lineprinter replacement with an entire row (?) of dots.
The LA36 was a terminal (keyboard/etc), ran at 30cps, and had the more typical arrangement with a single column of dots on a moving printhead...

LA36 Engineering manual: PDP-8 Document Search Results