ISO 2775:1977

Office machines and printing machines used for information processing — Widths of one-time paper or plastic printing ribbons and marking to indicate the end of the ribbons

Includes the principal widths to be retained for narrow one-time paper or plastic printing ribbons (19 mm width and less) intended for office machines and printing machines used for information processing. Also defines the location of the marking indicating the approach of the end of the ribbons for office machines. Reference: ISO 2257.