This machine is fast, though it doesn’t come close to its rated speed. Kyocera Mita quotes speeds of up to 40ppm, but the highest speed we saw was 26.7ppm, from our 20-page text print. On the five-page text print, it managed 16.7ppm and in Ecoprint mode, which uses less toner, it actually ran slower, at 13.6ppm.
The machine has a snappy duplex print speed, completing our 20-side test document at a speed of 20ppm. When it comes to copying a single page from the flatbed, it took just eight seconds and a five-page copy from the ADF completed in an impressive 14 seconds. The machine can copy single-sided documents to double-sided ones and handle full duplex copies, too. It's a very versatile copier.
Print quality had some disappointing aspects. While text print is clean and very readable, it can be a little light in places. Ecomode is obviously intended to be light as it’s saving toner, but there's a strange edge to some characters, giving a tone variation across character widths.
Greyscale graphics came through very light, with some of the grays in our test page hardly visible at all. This can be compensated for through the printer driver, but it's unfortunate they’re so light by default. This unevenness of tone is accentuated in copies of greyscale originals and was visible in our test photo prints, too. Both the default 600dpi resolution and the enhanced 1,200dpi mode showed some banding and lost virtually all shadow detail.
Kyocera Mita excels in running costs, as its drum lasts the lifetime of the machine and all you need buy is toner. This comes in a 15,000-sheet cartridge and produces a cost per page of 1.4p, including 0.7p for paper. This is very low, even for a machine costing £1,163.25 and should mean you can afford to print fairly freely without racking up huge consumable bills.
The FS-3140MFP is likely to be all you need for mono print, scan, copy and fax in an office of up to, say, six to 10 people. It's very well-featured and its duplex print mode could save considerably on paper, adding to the savings already available from low consumables costs. It's also fast, though not as fast as Kyocera Mita thinks, and should be able to keep up with even busy offices.
The only place it's let down, unfortunately, is the print quality. This is fine for text, but you may need to fiddle at the front panel or in the driver to get satisfactory graphics output.