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urgent help for hp designjet 8000s

jas

New Member
i have hp designjet 8000s. when i print the nozzle its very good foor all six colours. but printing start light cyan and light megenta colours are missing . and when printing finish stripes of all color come .i do not know whats the problem.
 

ddubia

New Member
I'm probably misunderstanding you here but...

If those heads are firing on a nozzle check and they are firing on the stripe then why do you think they are not firing on the print?

Can you post a pic of what the print looks like?
 

jas

New Member
thanks

someone advice me pleaseeeeeee its urgent. thanks ddubia i tried to attach file but could not.
 
I'm probably misunderstanding you here but...

If those heads are firing on a nozzle check and they are firing on the stripe then why do you think they are not firing on the print?

Can you post a pic of what the print looks like?

I think he's saying 2 of his colors are dropping out from the beginning and the others are banding before the prints are finished.
 

jas

New Member
yeas you are right , two colours are missing at start and magenta and cyan start banding.
 

andywall

New Member
hp designjet 8000s damper problem

I have a similar problem with my black, and some times cyan ink. It runs fine for small jobs, but when I try to print a 3/4 meter banner the black goes stripey like the head is blocked and then stops printing black altogether. I read that its a problem with the damper and that replacing this will help? not sure though. Im in the UK and cant get any help with it..
 

J Hill Designs

New Member
I read that its a problem with the damper and that replacing this will help? not sure though. Im in the UK and cant get any help with it..

sounds like a good place to start....classic ink starvation

also check o-rings at all connections - they may be fouled, allowing air to enter
 

iSignDesigncom

New Member
sounds like a good place to start....classic ink starvation

also check o-rings at all connections - they may be fouled, allowing air to enter
I am having same trouble with mine. Yellow seems to fade out after about 2 ft. Does anyone have a contact to purchase the dampers from?
 

Joe House

Sign Equipment Technician
It sounds counter intuitive, but I've never changed a damper on the Seiko or HP printers and had it make a difference (at least with the OEM inks). But, replacing the captops did. This is what sounds counter intuitive, but I saw this problem more than once and the first time I thought damper because of my experience with other printers, but it didn't change the dropout during printing. However, once I changed the cap tops (making sure to clean every connection below) the problem disappeared.
Hope this helps.
 
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