This is not something that happens every week: an inkjet printer enters to Guinness World Records as it can consistently reach a print speed of 70 pages per minute (ppm), which makes it the world fastest desktop printer apparently (just slightly faster than Memjet). HP is capable of reaching those speed because they use a technology called Page-wide, which reduced the amount of motion that need to happen during the printing process. With Page-wide, HP can print a page in a single pass, while regular Inkjet printers have to perform a classic back and forth motion for each printed line. You can visualize it as being an Inkjet printer as wide as the page itself, so there is no need for motion. Page-wide was introduced in October 2012, and the HP Office Pro X Printer is the first product to use it. If you want to learn more about the HP Page-Wide Technology, read this white paper.