Digital BW, The Print

Just an guess...

Could it be something other than a clog, like a loss of pressure in  
the cartridge?


On Jun 13, 2010, at 3:05 PM, Paul wrote:

> I have a predictable pattern of black (Eboni) apparent clogging with  
> my 7800 that someone more familiar with those heads might recognize.
>
> If the printer has sat for a month or so without use, the black  
> channel nozzle check will be blank for about 1/3 or less of the very  
> top left of the nozzle check pattern.  Oddly, I have not really see  
> evidence of the clog in printing when it's just a few lines that are  
> missing.  No other jets have ever been clogged on that printer.   
> But, assuming it's a clog, I'm suspicious this might be something  
> like ink running out of the head and drying on the lowest part of  
> the head.
>
> Any opinions welcomed.
>
> Paul
> www.PaulRoark.com