Toner cartridges should be recycled to save the environment from pollution. When they are thrown away, they end up in landfill and eventually degrade and break up causing the toner dust inside them to leach into the soil. From there it is eventually washed into waterways and oceans.
The ink which flows through each nozzle assembly functions as a lubricant and coolant for the nozzle so does not get damaged. It is very important never to attempt to print with an empty ink cartridge. The print head can burn out if the ink cartridge is not refilled or replaced promptly. The effect of the damage may range from poor print quality that will show up in the form of lines across the print page, blurring and light or dark patches on the page. Eventually, this can be fatal for the printer.
However, there are also some disadvantages. The first one is lack of flexibility. You need to purchase a certain amount of printer ink or a whole set of color / black cartridges each month. If your printer usage decreases, or you happen to print more black and white documents than colored documents in certain months, the unused ink will be wasted. Secondly, it is hard to estimate your actual savings on printer supplies. OEM printer cartridges ink cartridge refill are expensive and a 25-30% savings seems a lot. However, many vendors are offering remanufactured and compatible cartridges these days. These discount ink / toner cartridges are built according to the specifications of OEM cartridges but sold at half price of OEM cartridges. The lack of flexibility and the higher price of printer supplies including wastage of printer ink may offset the price of your free printer in the end.
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