lumps of toner black, on copies / prints on iR-ADV C 5051

[niyaskarimba]

Re: lumps of toner black, on copies / prints on iR-ADV C 5051

[QUOTE=teckat;497377][QUOTE=niyaskarimba;497354]

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is this a Print or Copy of original from Glass/Feeder




repeating image every 94mm.


Perform a forced drum replacement in service mode (Level 1 > Copier > Function > DPC > DRMRSETY, DRMRSETM, DRMRSETC,DRMRSETK). Then perform a complete auto gradation.


is this issue on BLACK ONLY ??
do u see howfaint image transfer from previous same copy is transferred to next copy

have u checked ITB assembly & Black Drum ??


[ATTACH=CONFIG]31287[/ATTACH]

The test page is prit out not copy.when we change the developer the machine will be okay and after some copies around 300 pages it will starts again.I get doubt the toner but we are using genuine toner only.This problem is only for black not for other colours.Please help me to solve this issue.

[teckat]

Re: lumps of toner black, on copies / prints on iR-ADV C 5051

[QUOTE=niyaskarimba;497755][QUOTE=teckat;497377]

The test page is prit out not copy.when we change the developer the machine will be okay and after some copies around 300 pages it will starts again.I get doubt the toner but we are using genuine toner only.This problem is only for black not for other colours.Please help me to solve this issue.

Do u use an OEM Canon Drum
To prevent image fault caused by residual toner, the cleaning brush roller is added to clean the primary charging roller

the drum cleaning brush roller not cleaning primary charging roller residual toner attached on the primary charging roller

[niyaskarimba]

Re: lumps of toner black, on copies / prints on iR-ADV C 5051

[QUOTE=teckat;497760][QUOTE=niyaskarimba;497755]

Do u use an OEM Canon Drum
To prevent image fault caused by residual toner, the cleaning brush roller is added to clean the primary charging roller

the drum cleaning brush roller not cleaning primary charging roller residual toner attached on the primary charging roller

we are using OEM Drum only(GPR-30).We are importing machines from Germany and the machines are running good here,but when we are changing the toner purchase from here localy ie ..from Dubai(GPR-30/EXV-28).The problem starts...

[teckat]

Re: lumps of toner black, on copies / prints on iR-ADV C 5051

[QUOTE=niyaskarimba;497796][QUOTE=teckat;497760]

we are using OEM Drum only(GPR-30).We are importing machines from Germany and the machines are running good here,but when we are changing the toner purchase from here localy ie ..from Dubai(GPR-30/EXV-28).The problem starts...

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Well u have your answer 😱

There are many dealers that claim to sell Canon Original Products.
Boxes even look exactly like OEM Canon.

Black Market is alive and well overseas.

[niyaskarimba]

Re: lumps of toner black, on copies / prints on iR-ADV C 5051

[QUOTE=teckat;497797][QUOTE=niyaskarimba;497796]

======
Well u have your answer ��

There are many dealers that claim to sell Canon Original Products.
Boxes even look exactly like OEM Canon.

Black Market is alive and well overseas.

But why only for black......???The toner is original we are buying from canon delear only....

[niyaskarimba]

Re: lumps of toner black, on copies / prints on iR-ADV C 5051

[QUOTE=niyaskarimba;497801][QUOTE=teckat;497797]

But why only for black......???The toner is original we are buying from canon delear only....

Any suggestions....???

[teckat]

Re: lumps of toner black, on copies / prints on iR-ADV C 5051

[QUOTE=niyaskarimba;497801][QUOTE=teckat;497797]

But why only for black......???The toner is original we are buying from canon delear only....

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the BLACK DRUM is retaining images = not being cleaned

Charging cleaning brush roller==To remove residual toner on the primary charging roller
Drum cleaning blade== To remove residual toner on the photosensitive drum

have u removed the BLACK Drum to view it's surface after Printing

Try to Perform a forced drum replacement in service mode (Level 1>Copier > Function > DPC >DRMRSETK

Then perform a complete auto gradation.

Static latent image formation block
1. Pre-exposure =To remove residual charge on the surface of photosensitive drum by exposure of pre-exposure LED light
2. Primary charging=To charge the surface of photosensitive drum to be uniformed negative potential
3. Laser exposure= To create static latent image on the surface of photosensitive drum by emitting laser light (image exposure:
laser exposure area becomes image area).