Having been in the printer/toner business for many, many years now, I have learned that most offices don’t take the necessary steps to maintain their printing environment and then get upset when a critical piece of equipment has ceased to function at the worst possible time. I thought I'd pass on some advise to help you out.
You need to make sure that your equipment receives routine maintenance. A simple cleaning can do a lot for quality and performance. I know how busy offices can get but there are providers who offer maintenance programs which, in the long run, could save you from future costly emergency repairs. In my experience, the #1 reason that a printer is unusable is because it has simply run out of toner. I highly recommended that you keep adequate stock of toner for each printer. Depending on how much a particular printer is used, it would be wise to have at least one cartridge on the shelf at all times.
Also, by upgrading your old tired printers, you can save money with a lower cost per page and increased speed. Many offices still use old outdated printers that can easily (and inexpensively) be upgraded to reduce costs and increase the efficiency of your office. Consider a recertified printer for your office. A recertified printer from the right company will perform flawlessly for years to come and will save you money.
I hope this was helpful and if anyone has any questions, I am happy to help.
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