Lexmark claims 18ppm for black print and 11ppm for colour in normal print mode, using ISO testing protocols. Our own tests, which include processing time, aren't quite as optimistic. Our five-page black text print completed in 52 seconds, which is equivalent to 5.77ppm, but this rose to 6.90ppm on the 20-page test.
Duplex print, supplied as standard on the Interact S605, is reasonable, as pages don't wait as long for ink drying between sides as on, particularly, Canon machines. Our 20-side document, the same as the 20-page simplex test, but printed on both sides of the paper, gave a speed of 3.68 sides per minute.
Colour print returned a speed of 3.33ppm, so we're getting back to the levels of speed exaggeration that were prevalent a year or so ago. Which isn't to say that the Interact S605 is slow; in fact, the machine has a very reasonable turn of speed when compared with other inkjet all-in-ones in the same price range.
15 x 10cm photo prints ranged from 43 seconds to 1:07, depending on source and, using Lexmark's latest PerfectFinish paper, produced photos that were very well-balanced, with good natural colours and high levels of detail in different lighting levels. Output is much closer to the quality achieved by Canon and HP than was the case with Lexmark's old printing system.
The Interact uses the same CIS scanner as the Interpret and Prevail Pro, reviewed recently, and produces very similar plain paper copies. Colours are impressively close to the originals and, elsewhere, text print quality is good, though still not quite as clean as from the best offered by some of its rivals.
We're relying on Lexmark's own online supplies site for cartridge costings, as the machines are too new for the Vizix cartridges to have worked through to the discount sites. As it stands, costs of 4.70p for an ISO black page and 11.83p for a colour one, both including 0.7p for paper, are on the high side. These figures are likely to improve over time, though.
This is a good, well featured all-in-one printer, whose touchscreen control has plenty of promise. As the SmartSolutions library grows, it could become a valuable extension to the functions available on this and other Lexmark printers supporting it. This gives the S605 tangible benefits, even if the rest of the machine offers very similar features and performance to other printers in the range.