21. Ribbons and spools used on office machines and data processing equipment. Specification for widths of fabric printing ribbons on spools up to 19 mm wide Part 2, (30th June 1982) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Ribbons and spools used on office machines and data processing equipment. Widths of one-time paper or plastic printing ribbons up to 19 mm wide and marking to indicate the end of the ribbons Part 3, (31st October 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
23. Tracked Changes. Information technology. Office equipment. Method for measuring digital copying productivity for a single one-sided original. (3rd June 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (90 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Tracked Changes. Office equipment. Minimum information to be included in specification sheets. Class 3 and Class 4 printers Part 2, (31st August 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (60 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗