Digital BW, The Print

Settling seems to be common to all pigment inks. As manufacturers 
continue to make the pigment particles smaller and smaller, they stay in 
suspension longer and longer. But eventually they settle. This is 
particularly aggravating in the big machines which have long ink lines 
running from the carts to the heads. It's really hard to shake up ink in 
a 2mm tube. You have to flush the lines either by actual flushing or by 
printing. Either way is a PITA.

Glad you are happily printing again.
--
Hogarth Hughes


igorw2001 wrote:

>Hogarth, I followed your advice and shook the carts. After that and 
>after making a few "flush" prints, the prints had regained their 
>former quality.
>So that is it: the pigments drop to the bottom or start to float and 
>are not evenly distributed through the fluid anymore. Why haven't I 
>read about this before? Is it not a common problem? Or does it happen 
>to Sundance inks only?
>
>Thanks for the tip!
>
>Igor
>
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>
>--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Hogarth Hughes 
><hogarth@s...> wrote:
>  
>
>>The pigments can settle, if you haven't been printing regularly. 
>>    
>>
>The 
>  
>
>>symptom of this is that the prints look lighter and fuzzier. It 
>>    
>>
>usually 
>  
>
>>takes weeks of inactivity for this to be a problem though. The cure 
>>    
>>
>is 
>  
>
>>to shake the carts and make a few prints, then things should be 
>>    
>>
>working 
>  
>
>>again.
>>
>>Other than that, I'd call your supplier and ask.
>>
>>--
>>Hogarth Hughes
>>
>>
>>igorw2001 wrote:
>>
>>    
>>
>>>I mean the NEW prints looked bad. The "old" (couple of days or 
>>>weeks) were fine. That can not have anything to do with fading.
>>> 
>>>
>>>      
>>>
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