Ricoh MP6001 Dark Band

[copierjeff]

doc01585420191205172225.pdf

Dark band and shrinking image at trailing edge on first copy/print only.
Any ideas?

[slimslob]

Are you sure that it is the trailing edge? Remember that normal copying and printing the paper is ran down to the duplex unit and then back up and out for face down output to keep multiple pages in the correct order. With face down exiting, the trail edge is the lead edge going through image transfer and fusing. The martini models have a history of lead edge background on the first page following setting idle if the drum is getting old and the charge corona is due for rebuild. The drum surface does not reach full charge potential in time for the lead 2 inches of the first page. First thing to try is a new or rebuilt corona. If the dtum has more that 1.2M on it you might considering replacing it as well.

[Brianneoe]

Looks like the drum drive is slipping. Slim as usual is correct about the process, lead edge versa trail edge but the sample provided looks like you have a bit of compression on the image after the black banding.

Good luck

[GIUBOSS]

if I remember correctly, a similar defect had occurred to me a while ago. I cleaned all the exposure, sensors and scanners well.

[MIKON]

Replace charge Corona wire and grid

[mikadonovan]

Copierjeff, have you resolved your issue? A follow up post would be good.

[Gab]

Also lubricate scaners rails

[keithxxiii]

Also lubricate scaners rails

Scaner rails? Wha How? I am confused..

[fshead]

if it is happening on print then not the scanner rails..
I always pull the drum unit,clean the charge unit,wire,grid etc and then clean
the mylar under the cleaning bush and sensor"which i pull out" and use water damp towel to clean to
get it to seal tighter against drum..You at time might need to replace it..
I always find keeping this clean reduces call backs and CQ ISSUES..

[copierjeff]

I ordered main charge wire and grid. Hopefully this fixes it. It happens when copying and internal prints like the copy count page. What's weird too is I replaced the transfer belt and blade and it got better. Transfer belt had over million on it as far as I can tell. It was doing it on almost every page but now just does it on first page. I also tried whole drum unit including charge assembly from parts machine the customer has and it does the same thing. Hopefully something is wrong with both charge units. Will update after I install wire and grid. Thanks for all the input!