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  1. Mimaki UJF-3042 restoration

    Interesting to see how this one will look after a year of (ab)use :) I've seen a bit of dribbling around the outside of the caps, white mostly (probably the most visible), I guess that's one area ink can work its way outside the designed captive system... When the sorbent matting arrives, I'm...
  2. Mimaki UJF-3042 restoration

    Ta, I was almost coming to the same conclusion of taking a look in that area, with a bit of reluctance, I must add! :covereyes:
  3. UJF-3042 Y-belt replacement

    For anyone interested, the belt replacement turned out really nice: https://www.signs101.com/threads/mimaki-ujf-3042-restoration.177224/page-2#post-1648080
  4. Mimaki UJF-3042 restoration

    The belt tension was reduced and the right hand side indeed unhooked from the slider without too much difficulty. What then proved a problem was trying to pull the belt through the Y-bar hole with the retaining metal piece still attached, where it gets hung up on internals in the Y-bar! Should...
  5. Mimaki UJF-3042 restoration

    The little job over the weekend was to take the table out and clean out the holes, and work out why the vacuum fan was not operating... Well the first thing was that the UV lamp had an 'extender' to shift it a bit further away from the heads, which meant that the service manual's instructions...
  6. UJF-3042 Y-belt replacement

    You know what, that may be the blindingly obvious thing I've missed! It looks like you could be right, thanks! :clapping:
  7. UJF-3042 Y-belt replacement

    Has anyone replaced the carriage (Y-belt) on their printer - the service manual doesn't discuss that particular topic so only have the mechanical drawings and printer in front of me to decide how best to proceed (belt has aged rubber and stripped teeth). The issue is that the clamping plates...
  8. Mimaki UJF-3042 restoration

    Well... it's gone midnight here now, but I just got back home after 4 hours at the unit... Damper deflating now I managed to get into INK FILL (air pg)... Checked ink lines as didn't see much coming out, just a bit of the flushing solution I left in the heads and nothing more..... More damper...
  9. Open-Source Inkjet Printer Project

    Absolutely, but 90% of the magic is the same, just different parts are moving! The fact is my friends still need flatbed for sample printing etc, colour management testing anyway and the overlap is significant. The ink management, heads, driving electronics are some of the more interesting...
  10. Open-Source Inkjet Printer Project

    I wonder how hard it would be to drive a number of heads that could put down a solid opaque white base coat in a single pass conveyor system, LED UV cured, compatible to be overprinted by CMYK inkjet next down the line (Agfa design PID or DP ink set)... Friends of mine been quoted almost $80K...
  11. Mimaki UJF-3042 restoration

    I'd hope to be able to modify this one to be able to take bottles, perhaps through tweaked old ink cartridges, assuming it all gets back to action! Now for today's update... Finished cleaning of the station assembly and fitting of newly serviced pump heads, the glued capping top plate is...
  12. Mimaki UJF-3042 restoration

    Thanks, I found the removal quite awkward, as that rear tab prevents a 'straight up and out' approach which would have been nice. The service manual (calling them dumpers ?!) doesn't particularly say anything special that I saw about reinstallation other than being the reversal of removal...
  13. Mimaki UJF-3042 restoration

    The pumps ready to go back in the station housing. The worst of the ink mess that was basically EVERYWHERE under the station was cleaned up (the felt pad removed, clearly totally full as it weighed a lot!) Could do with an Ethyl Acetate pressure washer :) That chemical certainly makes...
  14. Mimaki UJF-3042 restoration

    Dampers and belt have arrived! However before the exciting and highly anticipatory printing test can be done (Schrodingers cat anyone, the heads are both dead and alive until observed!), the repairs to the peristaltic pumps is needed and a bit more clean-up in that area first. I think we may...
  15. Mimaki UJF-3042 restoration

    Getting the pump head plate assembly out wasn't particularly easy, the capping section had to be unscrewed to make it easier (had to come apart anyway for cleaning) Separated the pump heads, and flushed through the peristaltic tube sections with ethyl acetate just to clean up a bit so don't...
  16. Mimaki UJF-3042 restoration

    This evening was a bit more cleaning ready for the pump repair (waiting on the replacement tube hopefully tomorrow) My hands have been a bit of a pain recently, I think down to sweating in nitrile gloves for 2-3 hours (not contact with ink), developed an itchy nobbly rash, so trying to limit...
  17. Mimaki UJF-3042 restoration

    Thanks! It's quite a journey, but hopefully will be of help to someone else too. Thanks for the information on the butyl carbitol, seems we can get this as Butyl Diglycol here in the UK. I wonder if that's what is used in the 'flushing/storing' agents with a slight oily consistency. I guess I...
  18. Mimaki UJF-3042 restoration

    Solder bridged the gap on the first repair... Covered with a UV cured conformal coating and additionally hot melt glue to both sides of the cable for additional mechanical support. The second cable repair wasn't so easy, as unfortunately the gap was a little large for solder, so had to use...
  19. Mimaki UJF-3042 restoration

    Two of the head EVEN/ODD connectors were then swapped around and the HD THERMIST error moved with the head cable, so it wasn't a fault with the slider PCB. It was felt to be a bit odd to have two even channels with the same failure and I'd understood these heads to be very reliable/durable, so...
  20. Mimaki UJF-3042 restoration

    Slider relay PCB with FFC cables to slider board disconnected, showing no D1 light (located between CN3 and CN7): Inspected the board for fuse problems etc but found nothing obvious, all fuses intact (the fuse for the 'D1' led power indication is on the reverse of the board). I started...
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