RICOH MP C4500 dark background color in copying

[tecnomarco]

Greetings to you, I have the following problem on a Ricoh MP C4500, making color copies with automatic mode, or full color, there is a dark background, making copies black / white copies are normal automatic exposure bottomless dark somebody can tell me that I can control, or you have to replace any parts, thank you for your attention

[ptrflrs]

Re: RICOH MP C4500 dark background color in copying

if i understand right u r getting dark on the bottom or top of pages which usually is the charge roller dirty, clean with soft cloth and very little water and allow to dry completely. i'm sure you checked optics and laser slits clean?

[tecnomarco]

Re: RICOH MP C4500 dark background color in copying

black and white copies are good, the printing of the test color is good, making a color copy there is a uniform background of all the press seems to have adjusted to the maximum dark

[fbkhan3]

Re: RICOH MP C4500 dark background color in copying

Are you getting print right? does it only happen with copies?if so then make sure you got the mirrors,ARDF mayler,and scanning glass clean. if it doesn't help you out try to lift the scanner from left front.it normally gets bent with a push and create some weird problems like background or lines in copies! good luck!

[tecnomarco]

Re: RICOH MP C4500 dark background color in copying

to explain, printing and copying is good, this fund is clear, it seems a problem of automatic exposure, adjusting manually to clear up the bottom disappears

[Llama God]

Re: RICOH MP C4500 dark background color in copying

There's some sort of adjustment in SP4xxx for coloured backgrounding but I can't remember what it is. Get the birth certificate out and check your settings.Out of interest, have you replaced the NVRAM recently?

[tecnomarco]

Re: RICOH MP C4500 dark background color in copying

is a photocopier purchased a few days ago, I do not think has been replaced the nvram

[Llama God]

Re: RICOH MP C4500 dark background color in copying

Replacing the NVRAM can cause some odd backgrounding faults. Anyway, back to SP4xxx for you...

[tecnomarco]

Re: RICOH MP C4500 dark background color in copying

Can you remember which SP4xxx

[teebee1234]

Llama God is on the right track. The grayscale setting has reset to default value. Not sure of the exact sp, just check the factory data sheet against what is currently programmed.

[Llama God]

Re: RICOH MP C4500 dark background color in copying

Can you remember which SP4xxx

No, otherwise I would have told you.

[tecnomarco]

Re: RICOH MP C4500 dark background color in copying

I double checked the values shown on the certificate of the car and as you say the gray scale was calibrated throughout - still 240 problem solved thanks to god and llama Teebee 1234

[Llama God]

Re: RICOH MP C4500 dark background color in copying

We are the kings of the night time world, as Kiss would say.