Digital BW, The Print

Jeff,

If it were the yellow position, I wonder if you'd see it with the Epson ink.

If just the yellow OEM ink is put in, does it still show dots?  You might
use the yellow OEM cart in each of the spots, one after the other, with the
correct chip put on it, to see if you can tell if it's only one position or
all of them that are causing this.  Cleaning fluid would also work if you
have some and an empty cart.

Paul
www.PaulRoark.com 


> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Jeff
> Medkeff
> Sent: Friday, August 26, 2005 3:40 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] C86 EZ Tiny Black Dots - Further Troubleshooting
> 
> 
> When last we discussed the C86 tiny random black dots issue, I had noted:
> 
> 1) They appear on the paper outside the image area, wherever the head
> flies over the paper;
> 
> 2) They are reduced by using high speed mode, apparently because the
> number of marginal overflies is lower.
> 
> 3) It apparently isn't a driver issue, as I have the symptom with driver
> v. 5.5 and 5.4; meanwhile, we know for certain that other C86 users do
> not have the symptom with 5.4.
> 
> I can now report that switching my C86 out to the Epson OEM color inks
> and printing some images reveals no errant dots visible anywhere in the
> print.
> 
> I can also report that when printing a black square with a white center
> on the paper, the errant dots appear with a random distribution wherever
> the print head passed over the paper; that is to say, the dots appear in
> the margin and inside the square at about the same density. It is not a
> repeatable pattern of errant dots. It is, however, about the same number
> of errant dots per square inch everywhere, and in each print.
> 
> When I refer to "tiny random black dot," I'm referring to something that
> is roughly circular, maybe elongated a little in the direction of the
> head travel, and is less than half a millimeter or so in diameter (I
> don't have  a magnified reticle to actually measure it, so this is a
> guess). It is, in other words, small and not obtrusive on a casual
> glance at the image, but quite a bit larger than the dots that appear in
> dark image areas.
> 
> Ok, so I'm no expert. What is going on here? The best hypothesis that I
> can come up with is that the EZ black cart is somehow causing ink to
> leak through the head and drip onto the paper, but I would think I would
> be getting much bigger blobs and smears than what I'm seeing if that
> were the case. Any ideas?
> 
> --
> Jeff Medkeff
> Eagle River, Alaska
> 
> 
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