You would never want your point of sale system to be down because you ran out of paper. Receipt and remote printers are the parts of your point of sale system most prone to failure. The same is true with regard to not have a supply of ribbons to use when your existing ribbon gets too light to read. This is also true for printers for sale. Using the standard parallel printer connection for your receipt printer gives you the option to utilize the serial and USB connections for other peripheral devices that will not work on a parallel interface. If you own a printer that takes ink cartridges, you’re probably not aware of some the problems, profits and legalities that surround these essential items.
In most cases, they send the printer off for repair and never get beyond the simple repairs that can be done locally. Which is similar to HP printers for sale most of the time. Both Canon and Hewlett-Packard have been involved in lawsuits over both cartridges and alleged unfair competition. For verification look for the parallel connector label above or below the connector.
In most businesses this is totally unacceptable and can cause significant loss of customer service. Those who fail to return them are breaking the law and could face legal action if they refill a cartridge, send it to a third-party refiller or simply do not return it to Lexmark. Generally, parallel connections are only for cable runs of 10 meters or less.
Even if you have a mixture of thermal printers and dot matrix printers in your point of sale system, you should consider having a simple dot matrix printer as a backup. Tonik has been selling inkjet cartridges and toner cartridges since 2001. Usually this is the exact opposite of Canon printers for sale. USB cables do not lock into place and can come loose with repeated movement of the printer.
In systems where a parallel printer is used as the point of sale receipt printer and a serial or Ethernet printer is used for the remote printer you will need to buy 2 different printers as most printers do not have multiple interfaces. Not all point of sale software uses parallel printers. You are not as stressed by having your point of sale system be crippled by a down printer.