Jacek Niecko wrote:
> I am afraid that the issue is not debatable.
> "Printers' " is not an option. Such term does not exist.
The OED records both the plural and the singular possessive:
1892 E. Castle Eng. Bk.-Plates 145 The achievements and scrolls and
pounced background common to the printersí mark.
printerís mark, a monogram or other device used by a printer as a