[1] Announced on February 14, 1979, as part of Office System/6, its feature set included two-sided printing.

Due to the speed of available solid state logic at that time, it was necessary to run the photoconductor drum at half the speed of the Series III, meaning it could only print up to 36 pages per minute,[1] where the model 10 copier was rated at 75 copies per minute.

[6] As part of the printing process it used an 18 facet rotating mirror that ran at 8000 RPM.

[7] The IBM 6670 Model II Information Distributor (6670-002)[8] was announced around August 1981[9] The main differences were: The IBM 6670 Model III Information Distributor (6670-003) was announced Aug 2, 1983.

[14] As envisioned,[1] an extension released a year later by a third party enabled "6670 .. terminal users (sic; to) send and receive data directly from other 6670s" in what the New York Times described as (a form of) electronic mail.