The U.S. manufacturer Lexmark C540n built into the series, a proprietary printing unit. The key: The toner cartridges are on the side of the unit behind a cover. The individual cartridges are similar in shape to large ink cartridges. Also the process of inserting looks more like an inkjet printeras a color laser printer. To test model came Lexmark C543dn with automatic duplexer and Ethernet port on it. In addition, it offers the PCL 5C emulations and 6 (Printer Command Language) and PS 3 (Prost Script).

We used the automated routine, installed a driver for both printer languages. At the same time the factory was at the printer function Smart Switch activated. Thus, the printer chose to order the appropriate emulation ever. This method is slightly slowed down the printer. What pace sometimes remained on the track, the unit was however compensated with good print quality: So the colors were bright and color fields from homogeneous. Due to the brightness stayed details clearly visible.

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In part, though reds were a bit too dominant. Especially in black and white mode liked the line work and the fine character representation. Toner splashes we saw almost none. This made it easier to read. The cartridges are supplied with 1000 page yield per color. Since it is this capacity in the aftermarket, it is not about starter toner. In general, the manufacturer advertises Lexmark consumables via the rewards program

Here the user registers on the website and agrees that he empty toner cartridges back to the factory ends. But he will have full cartridges at a reduced price. For ten blank cartridges, it is also a free. In addition, Lexmark will, at 30,000 pages, the cost of replacing the other accessories such as image drums. we place the program itself, we arrive at Since prices of 2.3 cents per black and white sheet and 10.2 cents for color page - still cheap. For the power consumption is not the same degree. For both 15.3 watts in sleep mode and 0.2 watts when turned off are values that could be improved.