Transverse stripes C550i

[albemero]

Hi everyone,
since a week a C550i makes the stripes you can see in the figure, we already have the Transer Band, the developers and the Drum K and C.
We ordered the Laser Unit. Does anyone have experience with this type of problem?

[Synthohol]

what is the problem?
can you circle it?

[albemero]

Of course...here it is. The lines are approximately every 4 cm and occasionally reach the end of the sheet

[Albonline]

halftone solids of each color @125 and 255 density's please. looks like a repeat happening, but i cant judge the size.

[albemero]

Yes. It´s repeated every 4 cm. Here is attacched A3 128 density

[femaster]

At 4cm, perhaps the transfer roller since it seems to affect every color based on your sample?

[tsbservice]

It's not repeated based on samples lines are in paper feed direction. I mean those look like lines on drum unit PCRs. The question is why exactly at 4 cm distance from each other?
Only thing I could imagine is PH unit.

[AlaskaCopyTech]

tsbservice what are your thoughts about those being from the developer doing something strange. I think it might be worth it just to take a peak and make sure the developers are all good.

[Max]

Run cymk solid tests. If lines line up on all colours then it's a belt, if not drum or dev related. swap colour drums to see if the line moves. if doesn't then dev related.

[aberock]

looks like a rotation of drum

stripe is magenta . why replace C ?

[Afanasy]

Hi. Maybe the repeat is still 36 mm? Then it is a developer unit M.

[tsbservice]

Hi. Maybe the repeat is still 36 mm? Then it is a developer unit M.

May be...

[Gift]

Probably HV / Bias voltage fluctuation due to a faulty or bad contact to the moving mag roller. Issues can spread if multiple units are kooked up on the same HV circuit. You might also check the drums - i've seen a lot with teared off OPC material/ are aluminium spots on the ends - you won't notice that on the prints because these marks are beyond the area for casual A4/Letter size.

[Tech09]

Paper is being fed SEF correct? With the repeating lines in both magenta and cyan repeating every 4cm? Yellow might be very difficult to see but is black the same result? If so, it's not drums, developer or PH, it has to be either transfer belt or transfer roller. How many clicks on the belt and roller?

[albemero]

It was the drum M. In fact the roller of charge does exactly the same circumference = 3,7 cm.

Thanks everyone