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Last edited by tongee; 02-14-2013, 02:54 AM. -
**Knowledge is time consuming, exhausting and costly for a trained Tech.**
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Re: canon ir7095
Stop the printing/copying process of large format while working by opening the front door. The mashine will stop imedeatly. How does the toner picture on the drum surface looks like? Do you use original canon toner?
Maybe the pre exposure lamp, as teckat suggest is bad, but i would assume, that in this case the potential control would freak out, throwing an e-xxx error.
Take out the developing unit and have a look at the developer roller, is the toner coating equal? what about the distance rollers? are they ok, not worn out or blocked?
Drum scraper ok and not blocked in movement?
The picture is really small, but it seems, that the "print free areas" (sorry, i dont know how to spell it correctly) are coated also, so at last a laser error may be possible too.If sometimes you feel a little useless, offended and depressed always remember that you were once the fastest and most victorious sperm of hundreds of millions!Comment
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Re: canon ir7095
Hello,
This seems to be a drum potential issue.
Keep in mind that in this model the laser "writes"
In COPIER > DISPLAY > DPOT, reccord and compare the following values:
1- VL1T: Is the reference value of the drum potential when the laser is "ON".
VL1M: Is the measured value of the drum potential when the laser is "ON".
VL1M = VL1T +/- 10 volts.
If this is note the case, there is a laser intensity issue and the prints will be lighter.
2- VDT : is the reference value of the drum potential when the laser is "OFF"
VDM : is the measured value of the drum potential when the laser is "OFF"
VDM = VDT+/- 10 volts
If this is not the case, there is a drum potential issue: Primary corona, HV PCB, Preconditining lamps... The white surfaces of the prints are darker.
Rachid.
"Find a job you love and you’ll never have to work a day in your life." Nagy's fatherComment
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Re: canon ir7095
Looks like a toner issue to me .try vacuuming the dev unit out and adding fresh from the bottle by pouring some in .
Used to happen on np copiers with crap toner from 3rd partiesLast edited by canonclc; 02-15-2013, 05:18 PM.Comment
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Re: canon ir7095
-In IR5000, IR5570, IR6570, IR5055, IR5065...the drum surfaces that are "hit" by the laser will not receive toner. They correpend to the white surface .We say that the laser "erases".
- In most of the other models, the drum surfaces that are "hit" by the laser will receive toner. They correspend to the image surfaces. We say that the laser "writes"
Rachid."Find a job you love and you’ll never have to work a day in your life." Nagy's fatherComment
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**Knowledge is time consuming, exhausting and costly for a trained Tech.**Comment
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Comment
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Re: canon ir7095
Clean Laser Unit thoroughly and adjust primary corona wires, this should do the trick.If sometimes you feel a little useless, offended and depressed always remember that you were once the fastest and most victorious sperm of hundreds of millions!Comment
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