Refurbished Konica 7045 - LIGHT COPY

[Stirton.M]

When the duplex (2-sided)copies come out on the exit, Image 1/3 face down or Image 2/4 face down? In other words, which images are the side of the paper that got copied on first?
Also, if the old drum worked fine you might want to try replacing again. Although I cannot figure why the drum would copy one side light and one side good on a 2-sided copy.

I agree with the moisture assessment.

Place a blank white sheet on the glass and make 20 copies of that white sheet.

Then load those 20 sheets back in the tray and make normal copies/prints and observe results. If ALL the 20 prints come out fine, moisture is the problem. Simply being, there is no reason the machine would be fine on side 2, but not on side one.

[acidbag]

Problem solved by adjusting on HV Adjustment the following:

- Transfer
- Separation AC
- Separation DC

the duplex copy is now ok.

Thanks for the replies.

[fernan]

Here are samples of the light copy prints. Two are printed directly from pc to copier printer and the other two using the duplex setting of the ADU.

which is which?
sample 1&3 is your 1st side copy and the 2&4 is the 2nd side copy if its like this it seems you have a moisturized paper.....

[acidbag]

When the duplex (2-sided)copies come out on the exit, Image 1/3 face down or Image 2/4 face down? In other words, which images are the side of the paper that got copied on first?
Also, if the old drum worked fine you might want to try replacing again. Although I cannot figure why the drum would copy one side light and one side good on a 2-sided copy.

Image 1 and 2 face down.
The ghost copy is face down.