Xerox 4510 "blobs" on printout

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pgx

I have an old 4510 that has dark spots (varying size, 1/4" or so). I
had this problem previously, and it went away when I changed toner
carts, but the problem is back with less than 2000 pages printed.

The blobs are in a line down the middle of the page, but don't appear
to be coming from the roller where the paper exits into the output
tray. I think they appear in a pattern related to the circumference
of the print drum. A fusion cleaning cycle doesn't help.

Any thoughts?

Phil
 
I have an old 4510 that has dark spots (varying size, 1/4" or so). I
had this problem previously, and it went away when I changed toner
carts, but the problem is back with less than 2000 pages printed.

The blobs are in a line down the middle of the page, but don't appear
to be coming from the roller where the paper exits into the output
tray. I think they appear in a pattern related to the circumference
of the print drum. A fusion cleaning cycle doesn't help.

Any thoughts?

Phil
Click to expand...

Sorry Phil I don't have the manual for this or the imge defect ruler. You need
to be careful, the circumference of the drum may be similar to the
circumference of the fuser rollers. However the fact that the problem went away
for a while indicates it is probably the drum, fuser marks almost never
disappear. If you can measure the drum diameter or circumference with care and
keeping it in the light for as little time as possible it will almost certainly
provide proof; It is most unlikely that the fuser rollers will have "exactly"
the same circumference.
Tony
 
A cleaning sheet would'nt help by any chance would it.. could it b
its picking the waste up..

I always imagined drum failure would be refusal in picking the tone
up in parts, sound like it's picking toner up from where i
shouldn't, possibly the heated roller for example

Dav
 
Tony <> wrote:

|
|Sorry Phil I don't have the manual for this or the imge defect ruler.

I have only the user guide which doesn't mention the Image defect
ruler, and a search at Xerox.com came up empty. If it is the drum,
what would cause the re-occuring problem?

Phil
 
Tony <> wrote:

Sorry Phil I don't have the manual for this or the imge defect ruler.

I have only the user guide which doesn't mention the Image defect
ruler, and a search at Xerox.com came up empty. If it is the drum,
what would cause the re-occuring problem?

Phil
Click to expand...

Phil
Yes I looked too including the tech resources I use on the net with no luck.

Try a "half test" as follows...
I assume this printer has a manual tray?
If so put a sheet of paper in the manual tray, print using the internal test if
there is one, otherwise print one page from the PC.
As soon as the trailing edge of the paper starts to exit the tray, stop the
printer by lifting the top cover (Toner compartment cover).
Remove the drum unit.
Look at the paper....is the blemish on the page?
If it is then the drum unit is at fault (or possibly the transfer roller but
this is unlikely since it is normally a smaller diameter than the drum and when
they fail they normally cause light print).
The toner on the paper will not of course have been fused so it will rub off.
If the blemish is not on the paper at this point but appears when you allow a
print to complete then it is the fuser.
You may have to repeat the half test until you get the timing right, the paper
should still be under the drum and not fed all the way into the fuser.
If it is the drum at fault then rotate it by hand (keep fingers away from the
drum surface and do not expose it to a bright light for very long) and you
might see the mark on the drum, if it is a contaminant on the drum you can
clean *only that portion* with isopropyl alcohol. Don't be tempted to clean the
whole drum or you will remove the dry powder lubricant and that might destroy
the drum unit. If it is not a contaminant then the drum has started to fail or
has been damaged (if damaged you might or might not be able to see it!), in
that case the drum will have to be replaced.
Tony
 
Tony said:
(e-mail address removed) wrote:



Sorry Phil I don't have the manual for this or the imge defect ruler. You need
to be careful, the circumference of the drum may be similar to the
circumference of the fuser rollers. However the fact that the problem went away
for a while indicates it is probably the drum, fuser marks almost never
disappear. If you can measure the drum diameter or circumference with care and
keeping it in the light for as little time as possible it will almost certainly
provide proof; It is most unlikely that the fuser rollers will have "exactly"
the same circumference.
Tony da Tiger
Click to expand...
 
Tony said:
(e-mail address removed) wrote:



Phil
Yes I looked too including the tech resources I use on the net with no luck.

Try a "half test" as follows...
Click to expand...
DEN IF DAT DON;T WORK TRY DA UDDER HALF

HA HA HA
I assume this printer has a manual tray?
Click to expand...
IT HAS A FEMANUAL TRAY
If so put a sheet of paper in the manual tray, print using the internal test if
there is one, otherwise print one page from the PC.
As soon as the trailing edge of the paper starts to exit the tray, stop the
printer by lifting the top cover (Toner compartment cover).
Remove the drum unit.
Look at the paper....is the blemish on the page?
If it is then the drum unit is at fault (or possibly the transfer roller but
this is unlikely since it is normally a smaller diameter than the drum and when
they fail they normally cause light print).
The toner on the paper will not of course have been fused so it will rub off.
If the blemish
Click to expand...
AKA PIMPLE
 
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