Roland RT-640 missing nozzles constantly

[p_vassilis]

Hello people,

we have a Roland RT-640 for a while now and for the past week the printer misses nozzles after 2-3 meters of printing. Also it does automatic cleanings very often, almost before every print, which doesn't sound normal. I attach an image of the printhead. It is very dirty and those little drops of ink worry me. Should I clean the surface of the printhead with deionized water? Is there any other action I should take?

thank you in advance

Vassilis P.

 

[Pitzu]

Looks like you have a problem with the maintenance station. You might have to change it.
At this moment you should clean the wiper blades and cappings with cleaning solution. I can see dried ink contour marks from the cappings, and that is not normal.
The maintenance station (especially the wiper blade) should be cleaned daily, using a sponge swab and cleaning solution. Otherwise, the ink dries and it can clog your printhead.
Also, make sure that the printhead doesn't touch the media while printing.

 

[Terry01]

That head has been dragging across your media or material. Check your fans for any build up as it looks as thought you are down on vacuum.

 

[Atomic DNA]

I would replace dampers as well.