DOCUCOLOR 12

[bebop]

Re: DOCUCOLOR 12

Ok. I'll try to replace that cleaner. Is it part of the IBT or is it near it? I ask this because I have an spare IBT assembly. As you can see I'm not an expert in this procedures...

Thanks a lot for your kind advice.

I'll stay connected and will inform about this solution.

[awest486]

Re: DOCUCOLOR 12

Hello Awest486

I have exactly the same problem with my DC12 like yours. Some prints look fine, then two or three come away with that absence of CMY in two inches from outer band of paper. I have also observed that when a bad copy comes out, the colors in the "good" part of the image are somewhat lighter that it should be (ex, reds are more orange like).

Please, would you be so kind to tell me how did you solve your problem??

Thank you very much in advance

Bebop

I have not fixed it yet. I purchased a new different machine but I still have my Doc 12. Waiting to run into someone in the copier fixing business that can work on it. If you do get yours fixed please let me know what they did.

Andry

[kandod]

Re: DOCUCOLOR 12

Ok. I'll try to replace that cleaner...

It is not the cleaner that causes the problem but the cleaner retract clutch - a device that rotates the cam shaft that lifts up and down the cleaner blade as the belt rotates. When the image is developed on the photoreceptor drum it is transfered to the IBT belt. That proccess repeates 4 times for each image - one for each of the proccess colors in the order Y M C K. During that time the cleaner blade must stay lifted up so that the image is built up - and that is what the retact clutch does. After transfering the image to the paper the belt needs to be creaned from the debries and the residual image left so the clutch releases the blade and so on. Some time that clutch for wahtever reason releases the blade for a moment, or earlier than it should and the result is seewping part of the image that is allready on the belt (usually at its end). That repeats each cycle so each of the first three colors are deleted during the 2-nd, 3-rd, and 4-th cycle and the black being the last color is transfered untouched. The cleaner clutch can be reached from the rear of the printer but it requres a lot of disassembling, using the guidence of the service manual at least, is highly recomended.

[bebop]