[Misc] Prints-density color problem. C452

[menosmola]

I have a problem with a konica minolta C452.
As you can see in attached examples, the beginning of prints are lighters.
I check belt, transfer roller, and laser, but i cant solve the problem.
Any idea?

[mo0651]

Re: Prints-density color problem. C452

Those prints are ran thru in portrait direction? Did you do a stop test?

[Synthohol]

Re: Prints-density color problem. C452

There is an adjustment for 2nd transfer lead edge I believe.
Play with those numbers and see what changes.

[menosmola]

Re: Prints-density color problem. C452

Those prints are ran thru in portrait direction? Did you do a stop test?

Yes, portrait direction.
No i didnt stop test. Best way to do stop test?

[menosmola]

Re: Prints-density color problem. C452

There is an adjustment for 2nd transfer lead edge I believe.
Play with those numbers and see what changes.

I play but nothing change...

[tehrancopy.com]

Re: Prints-density color problem. C452

have you tried cleaning your second transfer roller ?

[menosmola]

Re: Prints-density color problem. C452

have you tried cleaning your second transfer roller ?

Yes, i change for 1 new transfer roller...

[DigiMan]

Re: Prints-density color problem. C452

Strange,had this on a couple of these and what synthohol suggested rectified the problem.
Did you adjust it correctly?
Also did you do a panic stop to see if it happens on 1st or 2nd transfer?

[menosmola]

Re: Prints-density color problem. C452

Strange,had this on a couple of these and what synthohol suggested rectified the problem.
Did you adjust it correctly?
Also did you do a panic stop to see if it happens on 1st or 2nd transfer?

Yes, i do panic stop, and image in transfer belt is perfect, i think the problem is on second transfer, but i change second transfer roller and check second transfer mechanism and all seems fine, electrical problem maybe?

[Synthohol]

Re: Prints-density color problem. C452

sometimes just to see if it is an electrical issue, try setting it to thick 1,2 or 3 to see if the problem changes. if yes then its likely electrical, if no change it might be something mechanical. check the contact point on the copier where the transfer roller gets its juice and the terminal spring that touches it.

[imihm]

Re: Prints-density color problem. C452

I have a problem with a konica minolta C452.
As you can see in attached examples, the beginning of prints are lighters.
I check belt, transfer roller, and laser, but i cant solve the problem.
Any idea?

Hi there...
This is unexpectable problem check the fusing unit...

thanks

[menosmola]

Re: Prints-density color problem. C452

Hi there...
This is unexpectable problem check the fusing unit...

thanks

problem comes before fuser unit.

[imihm]

Re: Prints-density color problem. C452

problem comes before fuser unit.

Then make sure the connector to the second transfer roller is not loose...

Thanks...

[neil greenhough]

Re: Prints-density color problem. C452

Check the fuser line speed. I have had this problem when engineers have messed with it to stop creasing. Make sure both adjustments are set to default.

Sent from my Nexus 5 using Tapatalk

[menosmola]

Re: Prints-density color problem. C452

Check the fuser line speed. I have had this problem when engineers have messed with it to stop creasing. Make sure both adjustments are set to default.

Sent from my Nexus 5 using Tapatalk

Both set to default...