[CQ] C280 first print has line

[colonel]

I have a C280 that has a thin smudgy line just after the lead edge delection and half way through an A4 near top edge. It crosses where the lower edge delection should wipe it out. It clears after the first print. It has a clearly defined edge. Any ideas?

[allan]

Re: C280 first print has line

If its not transfer is must be the fuser speed or temp?
Post a sample.

Does the machine make any noise?

[femaster]

Re: C280 first print has line

Without seeing a sample, my first thought would be transfer belt. The cleaning unit has buildup in it and allows a little bit past the cleaning blade. Symptoms of this problem are: streaking across a portion of the page in the feed direction, with a clear line parallel with the lead edge of the paper; it shows up only on the first page of every run, subsequent pages come out clean.

If that sounds like your problem, remove and clean the transfer cleaning unit. If the transfer belt looks bad, just replace the whole thing.

[colonel]

Re: C280 first print has line

Thanks Chaps, I've uploaded [ I hope] a sample, I've checked the ITB and fuser and there was no sign of damage - marks etc. Its looks like residual toner on the ITB from the example

[femaster]

Re: C280 first print has line

Are you talking about the black bar across the top portion and that little bit along the right edge on the page? If you are that one has me stumped. I won't be of much help with you on that one.

Sent from my XT1254 using Tapatalk

[colonel]

Re: C280 first print has line

Correct, it is very transient, first print only, the ITB must be picking up toner from some where, what gets me is that it never varies in size or position

[paulrid]

Re: C280 first print has line

Is that a print or copy? It's very skewed and the lines follow the edge of the print. It looks like it's scanning over the lead edge and side edge but why it's only the first print I have no idea.

[colonel]

Re: C280 first print has line

Sorry its a scan of the print, the scanner skewed it, i've uploaded a clearer example.
A few more points, I send the same print to the KM again and its OK, I send it to a Samsung and its OK. They all are the same size and in the same position on the paper. The position of a copy from the glass is accurate. It has the latest firmware, its a postscript driver, I'm running out of ideas

[allan]

Re: C280 first print has line

It looks digital.

[Hansoon]

Re: C280 first print has line

It looks digital.

To me too, after seeing this better scan. Can not imagine that it is residual toner.

Hans

[rrrohan]

Re: C280 first print has line

Try re seating RAM

Sent from my SM-G900I using Tapatalk

[colonel]

Re: C280 first print has line

I tried reseating the RAM and went through the memory/bus check in service mode - all OK

Still got the problem, I tried the same image throught PCL driver, the faulty part of the image changed in density, i think that rules out residual toner on the ITB, this is being drawn.

OH HUM

[femaster]

Re: C280 first print has line

I agree with you on it being drawn. Trans belt smear looks just like it sounds, random smear. Does it show up on internal test prints or copies ever?

Sent from my XT1254 using Tapatalk

[colonel]

Re: C280 first print has line

Never on a copy or a internal test only print, the horizontal line sometimes turns into quarter inch long dashes.

If you sent a print image as mono then colour its on both prints if you send it as the same colour its only on the first of the two prints.

Its like the laser is not writing the image correctly

[imihm]

Re: C280 first print has line

I have a C280 that has a thin smudgy line just after the lead edge delection and half way through an A4 near top edge. It crosses where the lower edge delection should wipe it out. It clears after the first print. It has a clearly defined edge. Any ideas?

Hi there...

I wonder whether you are having this problem from all paper trays??