application_number US 39761099 A description fig1 shows an ink jet printer 1 constructed in accordance with this invention in this case a large format high performance graphics printer plotter is illustrated the printer 1 includes a supporting platen not shown a printhead unit 2 which moves back and forth through the print zone and a service station see fig7 reference 70 located at one end 5 of the printer 1 the platen is designed to hold a printing media 7 which moves upon it during a printing operation a feed mechanism for the media not shown comprising for example conventional friction rollers e g main drive roller pinch wheels and or overdrive wheels may be used to feed the media 7 through the printing mechanism along a feed path of the same and out of the printer through an opening 8 defined between the lower edge of a cover 6 and a front platen 9 the printer 1 has a predefined print zone hidden in fig1 by a swingable cover 6 which coincides at least partly with the feed path of the media in such a way that the latter is fed through the printing zone an illustrative printing zone is defined as an area within which each of the multiple nozzles of the printheads of the printhead unit 2 may.