hp 10000s cyan dropout

[woahdude]

im having inconsistent cyan dropout on my hp 10000s. right now its been dropping out around 10' into a 12' banner, sometimes i make it through ok. after every banner i do a wash printhead for 5 minutes and then a normal cleaning. the iq test always looks perfect afterwards, but then may dropout on the next banner.

when i can, i leave the printer in wash printhead over night. every morning i clean the capping station and wipers. i recently read to fill the capping station with cap cleaning solution which has the same effect as the wash printhead method, works for a while but eventually the heads still clog up.

heres the thing, i cant get a tech to look at it. i also really dont want to start taking the printer apart replacing random parts. is there any better methods for cleaning or tests to figure out just what is happening?

 

[J Hill Designs]

might be a clogged damper

 

[ColoPrinthead]

Are you running gutters? When I worked with a 10K in the past I always had drop out issues when I wasn't running gutters (unless all colors were used for the entire length of the image).

I agree with jhill, it could be the dampers too.

 

[woahdude]

Are you running gutters? When I worked with a 10K in the past I always had drop out issues when I wasn't running gutters (unless all colors were used for the entire length of the image).

I agree with jhill, it could be the dampers too.

you mean the color strip? if so yes i run the color strip. also these particular banners were full coverage blue which has cyan in the mix. if its not a blue heavy banner then the cyan on the color strip lasts much longer, but it does fade eventually

 

[Quix]

Maybe it's not clogged ink and it's starvation.
You could have air leaking through the ink lines (check from the dampers to the printheads first)