Summary: I have had this printer installed at my place of business for about 1 year. I have constant paper jams from the add-on tray 2 that I purchased with the machine. This I believe is due to a design flaw which puts the pick up roller on a swing arm above a non spring loaded sloped bottom tray.
Summary: The printer is simply amazing. It's speed and precision is amazing. I don't know if I have ever bought a printer that was more worth the money I spent. I definitely recommend this product. It prints over 30 pages a minute.
Summary: This worked great for the 90 day warranty period. Now jams all the time. I have already taken it in for service. Wish it had lasted. Printer was wonderful when it worked, super fast, clean sheets. Printer jams every 12 to 15 sheets now and overheats. Not worth the trouble.
Summary: I have purchased two Lexmark T640s from ceigreen. Both have been in excellent condition, and priced great. Our business owns about 12-15 over these printers; our software supplier demands we use them. Great printer, good print speed. Only problems arise when refilled toners are used.
Summary: I'm in accountant and print multiple huge daily reports. I have had this printer since 2008 and I love it! It prints fast and I change the toner once a year! I don't know why the other 2 reviewers have had problems, but I'm even considering buying this model for my personal home use.