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Too Black & White

Our copy machine prints out really dark, unclear copies :(
To get them remotely readable we have the settings on manual exposure & as light as we can go. If this action is neglected the copied document will get caught in a hot ashy & crumpled mess somewhere within the copier. Is this worth fixing or should we seek a replacement?

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  • moogie_j Sep 19, 2008

    I forgot to mention that it is a Sharp SF 2022

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  • Printers & C... Expert
  • 1,326 Answers

Have you cleaned the optic's resently? You most likely need a New Drum and Cleaning blade. If I were you, I would first try to clean the scanning lamp & reflecyor with alchol. Before I forget un-plug the copier first. Then with a dry rag wipe off the dust from the there mirrors that you can see. If you really want too you can also take the Black Box off and clean the two mirrors under that. Reinstall, what was removed inclueding the copy board glass and plug it back in and see what the copis look like.. They should come out better.....There is more that can be done, but first see what that can do for you without spending any Money......

Posted on Sep 20, 2008

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It depends... never use a Reman cart in these machines... only use sharp...especially if the machine is under warranty.

Does this happen when,
Using the Doc Feeder
When making copies from the Glass
Or when you print from a computer (assuming you print from a PC)

If you print something and this happens then it is inside the machine
Probably toner or developer dumping...

Take a few pieces of large white paper and cover the entire glass surface... make a copy is the line there? If so see the answer above... if not then close the top and make a copy with no paper on the glass... is that black line there.. If so then your top needs adjustment...

One more test
If you make a copy using the doc feeder, this black line only occurs when making copies with the doc feed, clean the **** glass, and try again...

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yes....do both prints and copies off the glass come out black?
yes...probably a problem in the drum/ CRU area
No- prints OK but copies black lift the lid and watch the exposure lamp...does it light up? does it move? Both of these scenarios would usually bring up a fault code, so I would still be inclined towards the drum unit.Pull the unit out and make sure no paper has sneaked up between the drum and the exposure slot, or even into the drum unit. another cause could be a broken corotron wire (very thin wire close to the drum usually behind a grid (charge grid) If it is a customer replacement drum unit (CRU) the charge grid will be built into the unit and will require the whole thing replacing.......

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