QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "brian_downunda" <brian_downunda@...> wrote:
>
> This is a bit off-topic for the QTR group, but it is on-topic for this 
> thread.  I have a CIS for an R2400.  It's not a cheapie.  It works 
> fine for a while, but after each (printer-initiated) head clean there 
> are usually quite large gaps in the nozzle check pattern.  These gaps 
> are hard to clear, and believe me I've tried everything.  Purge 
> patterns, head cleans, automatic head cleans, raising the bottles, 
> taking the lids of the bottles, install new dampers, etc.  Patience 
> seems to work best, but there are regular head cleans with this 
> printer, so there is frequent waiting between printing.

Hello Brian, I was given an R1800 with a CIS after the previous owner gave up in 
frustration.   It did not look cheap and was well documented.  I threw the whole CIS mess 
out so I don't have the brand name.

The problem with this one was that  a poppet valve in one of the cartridges leaked when 
the CIS cartridge was installed.  Ink would build up on the parking pad and evaporate into 
a sludgy mess.  Everytime the head parked it would jam some of the goo into the nozzles.  
Multiple head cleanings would clear the nozzles but next time it parked the nozzles would 
jam again.

I've had similar problems with MIS cartridges leaking at the poppet valve and recently 
when installing a new inkset had to throw away five out of twelve cartridges.

The aftermarket products just seem to have a problem at those valves.  Working with 
similar products at my day job I know how high the tolerances must be in insertion 
devices like that and I'm really starting to wonder about the whole industry.  Is there one 
manufacturer popping out all of this stuff and then it gets branded by a dozen different 
people or are all the different manufacturers making the same errors.