The following cartridges (including all toner cartridges, drums, fusers & maintenance products) are guaranteed to work in the Oki B840 printer.
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Hi,I bought one of the OKI B840 toners (20k) of you early Feb this year. My printer’s telling me there’s 10 left and the toner count is at 9786 which included the first initial toner that came with the printer! We’re a newspaper and print proof pages of adverts on A4 but also print our pages on A3, twice a month. There’s no way this toner would achieve 20k except by printing 1 text line out per page. My last HP A3 printer would last us over 4 months. Steve
Hi Steve, thanks for your question. I have forwarded your this on to our customer care team who will be in touch very shortly to help you out. To standardize page yields, manufacturers capacities are based on 5% of toner coverage on the page which normally equates to 3 paragraphs of text on an A4 sheet. From what you have mentioned, if you are printing full images and adverts on A4, the coverage of toner on the page will be much higher and will reduce the amounts of pages that toner can output but our team should be able to help you check that on your printer to find out exactly what the coverage has been. They will be in touch very shortly. Thanks, Stu.