Transfer Roller damaged, damaging Drum Unit

[CopierNerd]

Re: Transfer Roller damaged, damaging Drum Unit

Can't there be an obstacle in the drum's revolution before paper passes. A raised area or an object along the pathway of the drum's turning can as well cause this problem. Check any such probable obstacle.

I have checked it.There is no such thing in the passage of paper. They are using paper in long edge (lengthwise).

[Phil B.]

Re: Transfer Roller damaged, damaging Drum Unit

They are using OEM toner, if not then how can using counterfeit toner affect drum from this side?
I agree magnetic brush can damage due to narrowed distance.

clearly by your questions:
you are a newbie
-=or=-
you never worry about how things work... and just "go by the book"

go to your service manager demand he give you access to the sites you need.. if he refuses then you have two options Quit ot go above his head and complain to Owner. if you don't get issue resolved quit.

[3ktlc]

Re: Transfer Roller damaged, damaging Drum Unit

This is very common on these machines. Those units will not last their life without the spacers with the bearing in them. You have the answers to the problem.

[CopierNerd]

Re: Transfer Roller damaged, damaging Drum Unit

The usual problem is that the rear developer unit spacer wears down causing the space between the developer brush and drum surface to be reduced enough that the developer brush starts to wear down the drum coating until it begins to flake off the drum surface.

I totally agree with you and tsbservice in this regard. The worn spacer at the rear end is the reason. Why this spacer is worn out before time? The life of DV Tank is 590K? The spacer rotation is stiff? or it is just because that rear side is close to Gears assembly?

I will replace the DV tank or spacer somehow but i also want to fix the problem which is creating this mess. Damaging or wearing of Spacer. ???

[CopierNerd]

Re: Transfer Roller damaged, damaging Drum Unit

clearly by your questions:
you are a newbie
-=or=-
you never worry about how things work... and just "go by the book"

go to your service manager demand he give you access to the sites you need.. if he refuses then you have two options Quit ot go above his head and complain to Owner. if you don't get issue resolved quit.

I am a nerd as you can see. Thank you very much for helping me to resolve the issue. I will say i go by the book most of the time. I agree.

[tsbservice]

Re: Transfer Roller damaged, damaging Drum Unit

... I will say i go by the book most of the time...

That's not bad at all.
In fact most of the techs I know around me prefer to lay on their vast experience(20+ years) and stay in analog era. They can handle any mechanical problem, but reading a book is big no-no for them.
That's fine but at some point they will start to fail against new technologies.
I highly appreciate senior members here with their experience and their development sometimes from typing machines of 70-80s to the nowadays when they are leading force of this fine Forum.
Just be consistent, stay humble, ask your colleagues questions and finally one day you may find yourself amongst people here who HAVE answers

[CopierNerd]

Re: Transfer Roller damaged, damaging Drum Unit

That's not bad at all.
In fact most of the techs I know around me prefer to lay on their vast experience(20+ years) and stay in analog era. They can handle any mechanical problem, but reading a book is big no-no for them.
That's fine but at some point they will start to fail against new technologies.
I highly appreciate senior members here with their experience and their development sometimes from typing machines of 70-80s to the nowadays when they are leading force of this fine Forum.
Just be consistent, stay humble, ask your colleagues questions and finally one day you may find yourself amongst people here who HAVE answers

Wonderful! what a perfect reply!
Many Thanks

[allan]

Re: Transfer Roller damaged, damaging Drum Unit

That is really a good idea, but can you please tell me that if i cut that spring and lower the tension of transfer roller then why that spring is there? Did the Engineer of Designer/manufacturer was fool to put that spring there? The spring is just to provide tension so that paper touch the drum firmly and equal and even print transfer is done.

Been fixing design problems on theses machine for years these engineers are not all saints. The spring i mention does not press the roller against the drum that is 2 other springs doing that.
The spring i refer to is for the paper guide only and the spacers for that guide press against the drum.

[BLADE]

Re: Transfer Roller damaged, damaging Drum Unit

hey copiernerd, another idea, what if the contents of the dev unit were not circulating properly because of tank design, and over time the contents separated so that larger magnetic particles ended up at one end and smaller particles ended up at the other. I've seen dev spacers get blamed for faults when they were innocent

[Phil B.]

Re: Transfer Roller damaged, damaging Drum Unit

That's not bad at all.
In fact most of the techs I know around me prefer to lay on their vast experience(20+ years) and stay in analog era. They can handle any mechanical problem, but reading a book is big no-no for them.
That's fine but at some point they will start to fail against new technologies.
I highly appreciate senior members here with their experience and their development sometimes from typing machines of 70-80s to the nowadays when they are leading force of this fine Forum.
Just be consistent, stay humble, ask your colleagues questions and finally one day you may find yourself amongst people here who HAVE answers

RE: analog era? I have worked on the old 'handcrank smelly ink" to analog..to digital units. 70's-80's ran my own 'Bulletin Board System' wrote doorways (Edlin) etc.. Built/Repaired PC's at nite.. I READ CONSTANTLY ..and if you notice.. MOST of us '20+' year techs.. we tell the folks asking the questions where answers can be found IN A BOOK.. to RTFM = read the fucking manual.
RE: adapt to new tech.. totally agree.. have been out of the mainstream on : Food Prep/Cooking and Construction/Re-Modeling ... in my current *self imposed* lack of employment, and desire to repair/improve the homestead, I found my knowledge in those areas lacking. It didn't take long to get to speed on certain facets of them... but AGAIN.. I read..watched..inquired and finally executed the job... all good.
61yrs is still not to late in life to learn..but I find I do have a harder problems with lazy/people with lacking common skills/knowledge.

[tech51]

Re: Transfer Roller damaged, damaging Drum Unit

RE: analog era? I have worked on the old 'handcrank smelly ink" to analog..to digital units. 70's-80's ran my own 'Bulletin Board System' wrote doorways (Edlin) etc.. Built/Repaired PC's at nite.. I READ CONSTANTLY ..and if you notice.. MOST of us '20+' year techs.. we tell the folks asking the questions where answers can be found IN A BOOK.. to RTFM = read the fucking manual.
RE: adapt to new tech.. totally agree.. have been out of the mainstream on : Food Prep/Cooking and Construction/Re-Modeling ... in my current *self imposed* lack of employment, and desire to repair/improve the homestead, I found my knowledge in those areas lacking. It didn't take long to get to speed on certain facets of them... but AGAIN.. I read..watched..inquired and finally executed the job... all good.
61yrs is still not to late in life to learn..but I find I do have a harder problems with lazy/people with lacking common skills/knowledge.

[tsbservice]

Re: Transfer Roller damaged, damaging Drum Unit

Off topic

Phil B.
Just for clarification I will quote myself:

In fact most of the techs I know around me...

Means most of techs in my area, techs I know in person(they are not CTN members, no way).

I highly appreciate senior members here...

Means what you think, seniors here in CTN.
Take care and stay here even new challenges are more thrilling

P.S
And yeah this young buck copier nerd is pretty cocky, but still may became valuable member here...one day.

[allan]

Re: Transfer Roller damaged, damaging Drum Unit

Had one where the transfer roller metal guide was bent recently did exactly the same as you pictures.
Not buying the mag brush theory on this one. look at the nature of the damaged. Mag brush will polish the surface off.

[Woxner]

Re: Transfer Roller damaged, damaging Drum Unit

if you line up the transfer roller and the drum you will see what the wear is. remove the two screws on each end of the transfer roller and remove all but one on each side (black spacer) i have replaced new dev and still did it within 100k. its too much pressure on the drum. dev unit can and will do more damage when they get too bad on the dev unit

[CopierNerd]

Re: Transfer Roller damaged, damaging Drum Unit

hey copiernerd, another idea, what if the contents of the dev unit were not circulating properly because of tank design, and over time the contents separated so that larger magnetic particles ended up at one end and smaller particles ended up at the other. I've seen dev spacers get blamed for faults when they were innocent

What contents do you think may not circulating properly? when i rotate the gear manually, it circulates smoothly not stiff and mag brush is uniform, also circulating properly. There is no excessive developer deposited at any side.

DV Spacers circulate with a bearing inside. If that bearing comes out due to any reason the space or gap at that particular spacers becomes narrow and surface of drum gets in contact with the magnet roller. as a result drum get damage.

In this case there is no such signs. I have to trace the problematic part before replacement of transfer roller and drum unit.