Printing Light+repeating the print on the paper Samsung ML1740

[Jimmy]

I have a Samsung ML1740 which is about 3 years old.
It is printing light (toner save is not on) and it is also repeating the
print from the top of the page and down throughout the page, although
faintly.

I replaced the engine and still have the same problem.
Any ideas?

Is the fuser roller located in the engine or inside the printer?

tia!

 

[Moshe Goldfarb.]

I have a Samsung ML1740 which is about 3 years old.
It is printing light (toner save is not on) and it is also repeating the
print from the top of the page and down throughout the page, although
faintly.

I replaced the engine and still have the same problem.
Any ideas?

Is the fuser roller located in the engine or inside the printer?

tia!

Oh yea, the cartridge is factory original from Samsung bought at Staples.
Not a refurb.

Also the printer has had light duty, no jamming and I have not touched the
innards,,,,,,yet.....

 

[Jim]

Repeating image further down the page usually indicates that surplus
toner is not being removed/scavenged from the imaging drum. Thus
it goes round again and what is left, and should have been removed,
makes the second fainter repeat image. It is usually a cartridge
fault with the scavenger blade not scavenging surplus toner,
rare with OEM within their shelf life (3-5 years), common with
remanufactured cartridges.

Yea, but both cartridges are doing the exact same thing, which is really
weird.
The new one, which is Samsung OEM and the older one.
They are both printing light as well.

Leads me to believe something is wrong inside the printer itself.

 

[jim]

The distance between the repeated images gives you the circumference
of the drum involved.


It could mean they are both from the same batch, or identical production
process, whereby they retain toner, in a manner that the scavenger
blade can't remove all of it. Porus drum surface so the scavenger
blade pushes toner into the pores, or a charged drum that hangs
on to the toner. If it is an electrostatic charge problem it might
tie in with the faint print.
Has it always suffered from faint print?
If not it may be a spring loaded contact losing its spring or
a PSU voltage problem.
My HP has a print density knob, not sure what it varies electrically,
but its loght print at one end of its range and the equivalent of bold
at the other. I guess it varies a voltage.

It always printed fine.
One cartridge has been in the printer for a few months now working fine.
It started to get light so I figured it was toner time.
I bought a new cartridge and it is still printing light.

I suspect a charging problem.
I'm going to clean the innards out and see what happens.