Nowadays, printers have become a daily important instrument and are commonly seen in many places like homes, offices, hotels, restaurants, and many more. The two basic requirements for any printer to function are electricity and an ink cartridge. A printer cannot function and cannot be used without either one of them. Different varieties of ink are classified into dry and wet ink. The ink used in other printers, such as the desk jet series, is liquid ink, in contrast, ink used in laser printers is toner, a dry powder that is used in laser printers and photocopiers to arrange the text and clear images on available printed-paper. Toner is a fine black powder that is known to escape from the print cartridge while printing or while refilling. Printer toner contains the ink – whether in liquid or powder form – that allows our computer documents to come to life so that we may hold them in our hand. Most laser systems make uses of four colours of toner cartridges, with every colour preferred in the interior toner cartridge intended for ease of utilize and accurate functionality. A laser toner cartridge is one of the most important parts of your printer because it holds and controls the ink. Today, inkjet printers are the most affordable and popular printers; they offer high quality and fine detailed printing output. An important component of an inkjet printer is the inkjet printer cartridge. The inkjet printer uses ink cartridges to print on paper. Ink cartridges are available in colours and black. The advent of the inkjet printer has made printing much easier and faster. Inkjet printer cartridges are the receptacles that hold the ink before it is transferred to the paper or other printing medium. Commonly, a single ink cartridge can produce 300 to 800 printed pages per cartridge. The main drawback of inkjet printers is that ink will run out quickly. Just like an inkjet printer, the fax also requires a periodic toner/cartridge replacement. Companies to work with most standard fax machines manufacture fax ink cartridges. Generally, fax ink cartridge manufacturers offer cartridges that produce stark black and vibrant colours offering cheap ink alternatives to the high cost of original inkjet cartridges. In some cases, colours on their top quality compatible inkjet cartridges can produce more vibrant print results than the original fax ink cartridge.