rnovia80

Is my DX4 printhead gone bad

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i am trying to figure out what is goin on with my Roland SP300i machine. my black prints are looking very fuzzy almost looks like hairs around fonts and prints only on the black ink. I have cleaned and soaked and flushed the head.  Just this morning i printed some logos and changed the black setting in the artwork to just K100 and it seems to print great with minimal fuzziness around objects or fonts and no banding really at all. If i change the setting of the black to a richer CMYK setting  C75 M68 Y67 K90 which is a black black when it prints there is all kinds of banding and fuzziness going on it looks awful.  Please help

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what does your nozzle check look like-   I seemed to replace my dx4 black heads about every 2 years to keep all nozzles acceptable - 

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that black/cyan head is long past needing replaced - bite the bullet and if doing it yourself follow the directions very carefully - we have seen people zap $2500 boards not being careful enough and that hurts worse than replacing the head.   Black/cyan is the same head  - - - the black is always the one that has problems.   maint items like heads are just part of owning a printer.  also when you replace the head replace both dampers at the same time

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K thats what i thought. But i just like to try everything before i buy a new one. Have u ever heard of solventinkjet.com they are out of denver colorado. They have the DX4 heads for my machine for $695.00 im pretty sure they are the real epson head. I think i can definitely do it myself it doesnt seem like rocket science but the roland tech will install and calibrate it for $300. Ill prob just have him do it. 

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make sure any dx4 you buy has the solvent manifold installed on it - there are sellers out there with cheaper dx4's that have the water based manifolds on them that solvent will melt.   I always tried to have an afternoon free when I installed mine so I took my time and followed each step carefully - also gave me time to go thru all the calibrations a couple of times so it was dead on - then I would check the alignments again in a couple of weeks just to make sure.  Biggest mistake I have read is people doing the procedure by just turning the secondary power off and not turning the primary off - then they disconnect the ribbon cable and zap the mainboard that the ribbon cables connect to.   then you read a lot of sob stories.   it isn't rocket science if you have the service manual but should not be rushed

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PS that head should have been replaced a LONG time ago - that one deflected nozzle in your magenta isn't a big deal but after I lost a couple of nozzles and deflection started I replaced the head.  I always wanted to put out good work and not just get by.  I also went back to using OEM ink after my first fj500 that came with aftermarket inks - had way less problems with the oem, just got to the point my wife and i go on 3 week vacations and she retires in 14 months so the printer had to go away as much as I loved it.  last one was a sp-300i

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Ya i hear ya. I have roland tech coming out to change the head. I just bought the machine used got a good deal on it and figured i we ould have to change a head sooner or later. Ive cutting vinyl for 13 years now with my OLIOLINE 100 which is a beast. But coming into a printer cutter is a whole new learning curve. Im getting there. I figured id have him come out the first time to do the head so i can see what it entitles and definitely the next time i will do it on my own for sure. I knew the black must have been gone but i just wanted to make sure before i drop money. So after this black head is installed the fuzzy hairy look thats around fonts and logos should be gone ?

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yes when all the nozzles are firing and the rest are not deflected it will print much better - I always budgeted $1000 per year for maint on my solvent printers.  they are not buy em and forget em like plotters and keep it printing all the time when you get it fixed - if they sit around they get  a lot more expensive than if used all the time

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