A failing cap and a failing printhead look identical on a nozzle check, which is why so many good heads get replaced for no reason. This guide gives the daily wipe routine, five shop floor tests that separate a dirty cap from a worn one, and the everyday habits that ruin a brand new cap in a month.
Read MoreA damper, a cap top, and a wiper rarely fail loudly. They add a little variability to every print until that variability becomes your normal output. Follow one machine through a single working day to see where each part acts, then use the twenty minute weekly check to decide replacement by evidence instead of by a calendar on the wall.
Read MoreThe code on a printhead is not a secret, it is just not standardized. Photograph the label, split the string into blocks, and read from the front instead of the middle. This field method takes ten minutes at the bench and tells you the family, the variant, and the three things the label can never confirm for you.
Read MoreGen5 and Gen6 look like siblings on the bench and behave nothing alike in production. One buys ink latitude and forgiveness, the other buys finer detail and far less tolerance for a weak supply path. Here is how drop size and waveform decide the fit, plus a five step method to verify acceptance on your own machine without guessing.
Read MoreThe new ink is usually innocent. Most color shifts after an ink refill come from media, profile, incomplete flushing, or mechanical drift that the ink change merely exposed. Here is a decision tree that separates those four causes in one shift, with the cheapest test first and a reference strip method that ends the argument in your shop.
Read MoreWhite ink that recovers after a cleaning and then fades again is usually a supply problem, not a dead printhead. Work five checks in strict cost order: bag condition, pigment settling, circulation flow, damper condition, and line pressure, and only then the head. Each step gives you one test you can run at the machine today, before you buy anything.
Read MoreThe wrong part almost always starts with a wrong character on a sticker. Here is where the identification plate actually sits on a wide format machine, how to read it without trying to decode it, and how to confirm the model and serial with three independent sources before you place a parts order that costs you another week of downtime.
Read MoreCount the parts between the ink bag and the nozzle plate and you find ten components, eight of which can destroy the most expensive one in the machine. These five failure modes cover nearly every dead printhead, and four of them leave evidence you can see before you spend money on a replacement head that you may not actually need at all.
Read MoreThe DX7 is not simply a faster DX5, and a cheap refurbished unit is not always a bargain. Here is what really differs between the two heads, where that difference shows up on a working machine, and the three questions to ask before you pay for a used head, plus a clear rule for which model fits your shop.
Read MoreBanding is a measurement, not a mystery. Measure the distance between consecutive bands, compare that pitch with the feed step of your pass mode, and the machine will tell you whether the fault sits in feed, head, heat, or media. Follow the decision tree, act on the branch the pitch points to, and skip the printhead purchase you do not need.
Read MoreA head that dies right after a cleaning cycle is rarely a dead head. Run these five checks in cost order, from pump suction and cap seal to air leaks, cables, and head rank, and you will usually find the real fault before you spend money on a printhead you did not need. Each check ends in a pass or fail.
Read MoreBanding that starts halfway through a roll rarely means a dead printhead. Measure the interval between bands first, then work the checks in cost order: nozzle pattern, pass count, feed calibration on the actual media, bidirectional alignment, encoder strip, feed rollers and take up tension, dampers and cap top, and the printhead last, only after the other seven fail.
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A practical guide to the differences between i3200-A1, E1 and U1 printheads, including ink type, applications and compatibility.
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