If you take a centre line, the true position of the dot placement, regardless of the direction of travel of the printhead, the dot could be fired and either land short of the centre line or over shoot it. Likewise, when the head comes from the other direction, the same problem occurs. From a point of view of bi-directional, single pass printing, this is not an issue, but with one of the USP’s of the XpertJet 1682UR being single pass multi-level printing, this has to be right. Mutoh have developed and automatic system for the bi-directional adjustment of the dot placement. The machine reads the printed material and then via the use of DropMaster 2, adjusts the landing of each droplet to the precise position required. The final part in the puzzle of droplet placement is the method of which the media is fed to the machine. The printer again uses the data produced from reading the image that has been produced and using the Mutoh system called Automatic Media Feed Adjustment, makes the necessary corrections to the position of the substrate to ensure an almost perfect printed image. Waste Not, Want Not The XpertJet 1682UR is very focused on maximum effectiveness and this is not only limited to the ink. Mutoh have a clever device built into the printer called Media Tracker which cleverly tracks the media used and at the end of the production run prints a bar code on the leading edge of the unused reel to indicate what is left on the reel. It might be a name that is not top of your list when looking for new printer, but you would be very remiss not to look at what is in fact becoming one of the industry leaders for digital inkjet printers. as excellent adhesion and scratch resistance. There should be no concerns over the pigments contained in the white ink, as you would expect, the XpertJet 1682UR has a system to ensure the ink is agitated to avoid settlement. This all means not only is the printer highly productive; it means you eliminate the need for substrate pull-back which is a massive upside when producing an impeccable level of print. Aside from quality, should you change the combination of layering itself, you can change the type of output from the machine. Application and variation of colour is only as good as the level of nozzles available. Whilst the colour outcome is adjusted with the use of variable droplet technology, the maintenance of the nozzles is accomplished on the XpertJet 1682UR by the use of what Mutoh call Nozzle Area Select. The purpose of this function is to only use the nozzles that are clear and ready to use to their fullest affect. The automated nozzle checking unit cleans and attempts to reinstate any blocked nozzles, but if this is not possible, Nozzle Area Select takes over. A second automated system to ensure top quality performance is the ability of the machines to check and adjust the actual positioning of the dot. You need to bear in mind the dot is being fired from each direction depending on the pass the head is making. Brian Sims Principal Consultant, Metis Print Consultancy, www.metis-uk.eu 27 Issue 257 - February / March 2025 email: editor@signlink.co.uk UNDER THE HOOD / MUTOH XPERTJET 1682UR
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