Ligth prints Konica 950

[chivozx]

Hello,
I can not find solution to the light impressions in a Konica BH Pro 950.
I think it's transfer failure. I have changed the transfer wires, charge corona and charge wires.
In the opc it is appreciated that the image is denser than the one that later appears in the paper.
I leave you a sample.
Thank you.

3700937010

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Hola,
No encuentro solución a las impresiones claras en una Konica BH Pro 950.
Creo que es fallo de transferencia. He cambiado los hilos de transferencia, corona e hilos de carga.
En el opc se aprecia que la imegn es más densa que la que luego aparece en el papel.
Os dejo una muestra.
Gracias.

[Synthohol]

Change your developer. It's contaminated with paper dust.

[methogod]

AGREE


Change your developer. It's contaminated with paper dust.

[allan]

So the image on the drum is good but toner does not get pulled to the paper.
What is the count on the drum and developer?

Looks very much the same as a B751 image with a transfer current leakage.
Make sure there is nothing touching the wires, and that the contacts are touching properly.
You could find another HV unit...

[blackcat4866]

... I think it's transfer failure. I have changed the transfer wires, charge corona and charge wires.
In the opc it is appreciated that the image is denser than the one that later appears in the paper... Gracias.


So the image on the drum is good but toner does not get pulled to the paper.
What is the count on the drum and developer?

Looks very much the same as a B751 image with a transfer current leakage.
Make sure there is nothing touching the wires, and that the contacts are touching properly.
You could find another HV unit...

I agree with allan for a couple reasons. If the latent image is well developed the developer is doing it's job. It must be a transfer loss and there are other ways you can lose transfer:
Perhaps the transfer separation unit does not raise close enough to the drum.
Perhaps the corona blocks are discharging.
Perhaps the high voltage cables are leaking. Look for burn/arc marks to the frame
Perhaps you have an HVT failure.

I would investigate the possibilities in that order.

On these machines the developer rarely undertones. It almost always overtones when the developer fails. =^..^=

[chivozx]

Thank you very much to all.

I changed the developer and it was fixed.

He does not even have a pure black but it is because of the drum that is out of his useful life.

Greetings.

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Muchas gracias a todos.

He cambiado el revelador y se ha solucionado.

No tiene aun un negro puro pero es por culpa del tambor que está fuera de su vida util.

Saludos.

[methogod]

you can try to adjust that by upping the LD a bit...

[chivozx]

I did it, but it has a limit, I left it to the client as best I could.

It's up to him to spend money to make a good PM.

Thanks.

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Lo hice, pero tiene un limite, se lo dejé al cliente lo mejor que pude.

Ya depende de él el gastarse dinero para hacer un buen PM.

Gracias.