Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "foodfeak" <
kirk.ali@l...> wrote:
> Have come across a problem that I don't understand and does not
> make 
> any sense.
> I have a CIS with MIS FSN inks with the Piezography BW software. I 
> did not use the printer for about 3 weeks, when I tried to print the 
> black nozzle was not firing. I did couple of cleaning cycles but 
> then all the lights on the printer flashed. My printer is still 
> under guarantee so I phoned Epson. They got me to reset the print to 
> no avail. Under the guarantee they sent some one to fix it. I took 
> the CIS off put the original cartages in then every thing worked OK 
> (had a problem with paper feed so still got Epson to have a look).
> 
> Epson exchanged my printer with a new one. Have to say Epson back up 
> is second to none this is not the first time I have dealt with them.
> 
> New printer worked OK put the CIS back on again the black nozzle is 
> not working. I have took the CIS off put original cartages in and 
> the blacks OK.
> 
> Every time I have taken CIS off I have put plugs in and nipped the 
> tubes closed so no air has got into the system. There is no air in 
> tubes, cartridges are full if I take plug out of cart the spike is 
> coved in black ink so as far as I am aware the CIS is in perfect 
> working order.
> 
> At this moment in time CIS is off the printer and original carts in 
> and all is working well. Could any body suggest my next move? Is it 
> worth putting the CIS back on doing some purges and cleaning cycle 
> and leaving for an 8 hour stretch. 
> Should I put a cleaning cart through before putting the CIS back on? 
> 
> Has any one ever had this sort of problem as I have said it makes no 
> sense as all seems OK?

> Kirk

Two possibilities come to mind.

1.  If you are using the old black ink, you may have sludge in the 
cartridge, and it cannot be cleared.  To check for sludge, empty the 
black-ink bottle into a temporary vessel and examine the original.  If 
there is any sludge at the bottom, your black cart must be replaced and 
eboni black substituted for the old black.  I had this problem with the 
original black.

2. You're already using eboni black?  The cart may not be "in perfect 
working order."  Check for foam and how to get rid of it at the MIS 
site.  I had this problem as well.

Harry Lockwood