Hi, I have a UV flatbed printer Erasmart UV A5 that has a head epson L800, it seems that at the beginning of the day the yellow color has black ink mixed at the beginning of the print, ie if I print several times that pattern of colors yellow begins to improve until it looks good, however when I turn off the machine and start using it the next day and the black ink reappears in the yellow color does anyone know what could be happening?
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Black ink mixed into yellow ink at the start of the day UV Printer
Smoke_Jaguar
Man who touches printers inappropriately.
Sounds like a delaminating head. The L800 heads are basically a head for a water-based ink, and they degrade with UV ink over time, seals swell and get soft and the nozzle plate glue starts to come undone. L800 and XP600 heads are great for the first six months and are way cheaper at $170 or so compared to an i3200-U1-HD head which is closer to $1300, but you lose out on durability.
The head is one month old
Smoke_Jaguar
Man who touches printers inappropriately.
Check your wiper, cap, pumps and dampers, all of which should be changed when doing a head.
What seems strange to me is that if I print several times the black ink stops coming out but when I turn off the machine and use it again the next day it comes back
The wiper, cap and pump are also new
Smoke_Jaguar
Man who touches printers inappropriately.
If you're getting ink starvation, I'd flush and refill the line and swap the damper.