Fax Machines work by digitalizing a given image into a grid or dot matrix and sending it over a telephone line or internet connection. The Fax Machine can digitalize an image in 2 ways. The first is a codebook based encoding scheme, optimized to efficiently compress unused or white space, one line at a time, known as the Modified Huffman method (MH). The Modified Read (MR) method encodes the first scanned line using the MH method, then compares the differences found between the first line and next two to six lines of data, before starting again, compressing and comparing every 3-7 lines. This way more data can be transferred to the preferred destination at one time. To transfer the image onto paper, the Fax machine uses a thermal printhead having a fixed width and a thermal ribbon, roll, or film inside of a Fax Cartridge which is coated with a layer of wax and / or resin. The received image is transcribed onto the ribbon, roll, or film with the temperature controlled printhead while pressing against the paper creating the necessary heat and pressure to adhere the ink composites to the page. Inkgrabber.com offers all three varieties of fax cartridges including the Original Equipment Manufacturer (OEM) or Genuine cartridges which are created by the printer manufacturer, the Remanufactured cartridges which are refilled genuine cartridges that are tested to ensure premium performance, and the Compatible cartridges which are created by a third party and can be offered at a fraction of the genuine cartridge price. All products, including the Sharp IJMUX36ND, are ISO 9001 certified, meeting the highest standards and offered at only $64.99. Every Remanufactured, Compatible, and Genuine Sharp Fax Cartridge has up to a 2-3 Year Shelf life and is backed with the Inkgrabber 90 Day Money Back Guarantee. In addition Inkgrabber.com also provides a 1 year cartridge exchange policy for damaged or faulty hardware.