Bad laser printout, probable causes?

[Guest]

Archived from groups: comp.periphs.printers (More info?)

Hi.

I have a laser printer which produces very "dirty" prints, can someone
with printing knowhow tell me what is the probable cause for this?

The image of bad print is located at:

http://www.kukugaga.com/images/8830_badprint.jpg

Thanks!

Kirill
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[Guest]

Archived from groups: comp.periphs.printers (More info?)

My layman's guess: Dirty optics on the laser. The "dirt" only appears
around areas that are supposed to print. It makes me think of a focus
problem, where some of the laser energy is scattered to nearby spots on
the drum as it is being exposed.

On some laser printers, you can inspect the exposed image on the drum,
before transfer to paper. If you can do this, you can see if the
problem is before/after transfer. If the image is OK before transfer
to paper, then try to inspect after transfer, but before fusing. I
don't know what type of printer you have, and I don't know if you can
do this on yours. Be careful - don't blame me if you break the
printer.

Hopefully, others who know more than me about this will reply based on
experience.

Paul

Kirill Ponazdyr wrote:
> Hi.
>
> I have a laser printer which produces very "dirty" prints, can
someone
> with printing knowhow tell me what is the probable cause for this?
>
> The image of bad print is located at:
>
> http://www.kukugaga.com/images/8830_badprint.jpg
>
> Thanks!
>
> Kirill
> -------------------------------------------------
> When replying via E-Mail, please remove duplicate
> "@" from the address.
>
> Bei Antwort via E-Mail, bitte doppelter "@" aus der
> Addresse herausnehmen.
> -------------------------------------------------

 

[Tony]

Archived from groups: comp.periphs.printers (More info?)

Kirill
Please advise the make and model of the printer - that may help.
First thoughts are....
1. There are horizintal lines on the paper, caused possibly by a bad cartridge,
in some models this can be caused by a near empty cartridge. Have you tried
changing the cartridge? If not the cartridge then it could be the fuser.
Knowing the model will assist.
2. The strange ghosting around the print is worrying, it may be related to the
lines, if not then it is either laser optics, laser or DC controller problems.

Please advise model since without that I can only guess.
Tony


Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>Hi.
>
>I have a laser printer which produces very "dirty" prints, can someone
>with printing knowhow tell me what is the probable cause for this?
>
>The image of bad print is located at:
>
>http://www.kukugaga.com/images/8830_badprint.jpg
>
>Thanks!
>
>Kirill
>-------------------------------------------------
>When replying via E-Mail, please remove duplicate
>"@" from the address.
>
>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>Addresse herausnehmen.
>-------------------------------------------------

 

[Guest]

Archived from groups: comp.periphs.printers (More info?)

Dear Tony,

This is a Xerox 8830 Laser Plotter.

Jesus, this thing was DIRTY with Toner when I got it. So the first
thing I thought of was dirty mechanics, but this really should go away
after some prints, but it did not here.

Regards

Kirill

On Thu, 12 May 2005 19:42:26 -0000, Tony <> wrote:

>Kirill
>Please advise the make and model of the printer - that may help.
>First thoughts are....
>1. There are horizintal lines on the paper, caused possibly by a bad cartridge,
>in some models this can be caused by a near empty cartridge. Have you tried
>changing the cartridge? If not the cartridge then it could be the fuser.
>Knowing the model will assist.
>2. The strange ghosting around the print is worrying, it may be related to the
>lines, if not then it is either laser optics, laser or DC controller problems.
>
>Please advise model since without that I can only guess.
>Tony
>
>
>Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>>Hi.
>>
>>I have a laser printer which produces very "dirty" prints, can someone
>>with printing knowhow tell me what is the probable cause for this?
>>
>>The image of bad print is located at:
>>
>>http://www.kukugaga.com/images/8830_badprint.jpg
>>
>>Thanks!
>>
>>Kirill
>>-------------------------------------------------
>>When replying via E-Mail, please remove duplicate
>>"@" from the address.
>>
>>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>>Addresse herausnehmen.
>>-------------------------------------------------

-------------------------------------------------
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[Tony]

Archived from groups: comp.periphs.printers (More info?)

Kirill
I don't work on Xerox lasers unfortunately (due to some local difficulty with
Xerox, they refuse to sell us or any other independant repairers any parts!!!).
Try this (Paul has suggested something similar) -
Send a page to be printed with a reasonable amount of data on it, open the
cover when you think the paper is about to enter the fuser. Remove the
cartridge, carefully remove the paper (the toner will not be fused and will be
easy to smear) and examine the drum and the paper.....what is the image like on
the drum and on the paper, let me know.
Tony

Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>Dear Tony,
>
>This is a Xerox 8830 Laser Plotter.
>
>Jesus, this thing was DIRTY with Toner when I got it. So the first
>thing I thought of was dirty mechanics, but this really should go away
>after some prints, but it did not here.
>
>Regards
>
>Kirill
>
>On Thu, 12 May 2005 19:42:26 -0000, Tony <> wrote:
>
>>Kirill
>>Please advise the make and model of the printer - that may help.
>>First thoughts are....
>>1. There are horizintal lines on the paper, caused possibly by a bad
>>cartridge,
>>in some models this can be caused by a near empty cartridge. Have you tried
>>changing the cartridge? If not the cartridge then it could be the fuser.
>>Knowing the model will assist.
>>2. The strange ghosting around the print is worrying, it may be related to
>>the
>>lines, if not then it is either laser optics, laser or DC controller problems.
>>
>>Please advise model since without that I can only guess.
>>Tony
>>
>>
>>Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>>>Hi.
>>>
>>>I have a laser printer which produces very "dirty" prints, can someone
>>>with printing knowhow tell me what is the probable cause for this?
>>>
>>>The image of bad print is located at:
>>>
>>>http://www.kukugaga.com/images/8830_badprint.jpg
>>>
>>>Thanks!
>>>
>>>Kirill
>>>-------------------------------------------------
>>>When replying via E-Mail, please remove duplicate
>>>"@" from the address.
>>>
>>>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>>>Addresse herausnehmen.
>>>-------------------------------------------------
>
>-------------------------------------------------
>When replying via E-Mail, please remove duplicate
>"@" from the address.
>
>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>Addresse herausnehmen.
>-------------------------------------------------

 

[Guest]

Archived from groups: comp.periphs.printers (More info?)

Thanks Paul,

This is a Xerox 8830 Plotter, big beast!

I am kinda worried about digging deep into it, it is full of toner and
I am not sure if my lungs will like it.

Cheers

Kirill

On 12 May 2005 11:14:07 -0700, gnewsremove1@uugw.hifn.com wrote:

>My layman's guess: Dirty optics on the laser. The "dirt" only appears
>around areas that are supposed to print. It makes me think of a focus
>problem, where some of the laser energy is scattered to nearby spots on
>the drum as it is being exposed.
>
>On some laser printers, you can inspect the exposed image on the drum,
>before transfer to paper. If you can do this, you can see if the
>problem is before/after transfer. If the image is OK before transfer
>to paper, then try to inspect after transfer, but before fusing. I
>don't know what type of printer you have, and I don't know if you can
>do this on yours. Be careful - don't blame me if you break the
>printer.
>
>Hopefully, others who know more than me about this will reply based on
>experience.
>
>Paul
>
>Kirill Ponazdyr wrote:
>> Hi.
>>
>> I have a laser printer which produces very "dirty" prints, can
>someone
>> with printing knowhow tell me what is the probable cause for this?
>>
>> The image of bad print is located at:
>>
>> http://www.kukugaga.com/images/8830_badprint.jpg
>>
>> Thanks!
>>
>> Kirill
>> -------------------------------------------------
>> When replying via E-Mail, please remove duplicate
>> "@" from the address.
>>
>> Bei Antwort via E-Mail, bitte doppelter "@" aus der
>> Addresse herausnehmen.
>> -------------------------------------------------

-------------------------------------------------
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"@" from the address.

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[Guest]

Archived from groups: comp.periphs.printers (More info?)

On 12-May-2005, gnewsremove1@uugw.hifn.com wrote:

> Dirty optics on the laser.

There is a clue in that he says the printer is full of toner,
it's a good bet that there is a film of toner on the mirror assy.
Vacuming it may not get it off, a soft brush might, if you
can get into the optics. From the repeating lines there
also appears to be a cartridge problem, the toner forming
the lines going round again, instead of being scavenged by the
doctor/scraper blade, into the waste toner hopper. They
repeat by the circumference of the drum. Worst case
ghost images of already printed text appear.

 

[Tony]

Archived from groups: comp.periphs.printers (More info?)

Sorry
I didn't see this before I replied to the poster. Your diagnosis is probably
spot on.
Tony


ato_zee@hotmail.com wrote:
>
>On 12-May-2005, gnewsremove1@uugw.hifn.com wrote:
>
>> Dirty optics on the laser.
>
>There is a clue in that he says the printer is full of toner,
>it's a good bet that there is a film of toner on the mirror assy.
>Vacuming it may not get it off, a soft brush might, if you
>can get into the optics. From the repeating lines there
>also appears to be a cartridge problem, the toner forming
>the lines going round again, instead of being scavenged by the
>doctor/scraper blade, into the waste toner hopper. They
>repeat by the circumference of the drum. Worst case
>ghost images of already printed text appear.

 

[Guest]

Archived from groups: comp.periphs.printers (More info?)

On 13-May-2005, Tony <> wrote:

> Sorry
> I didn't see this before I replied to the poster. Your diagnosis is
> probably
> spot on.
> Tony

Think of the effect as being like car headlamps in a fog.
Well except for California where they don't get fog.
He mentions being afraid of the dust. Do it outside
on a breezy day, stand upwind, and all the dust is
blown away from you. Dust everywhere in the printer
can occur if it's been shipped by carrier, with an
unsealed partially used cartridge.

 

[Tony]

Archived from groups: comp.periphs.printers (More info?)

I have been to California several times although I live in a different country,
and the worst memory I have is of the dreadful smog that you fly into when you
arrive in LA. So I'm a bit confused by your post. I can only assume that you
live in LA since those poor folks simply do not notice what they are breathing
every day. <G> <G>.
Tony

ato_zee@hotmail.com wrote:
>
>On 13-May-2005, Tony <> wrote:
>
>> Sorry
>> I didn't see this before I replied to the poster. Your diagnosis is
>> probably
>> spot on.
>> Tony
>
>Think of the effect as being like car headlamps in a fog.
>Well except for California where they don't get fog.
>He mentions being afraid of the dust. Do it outside
>on a breezy day, stand upwind, and all the dust is
>blown away from you. Dust everywhere in the printer
>can occur if it's been shipped by carrier, with an
>unsealed partially used cartridge.

 

[Guest]

Archived from groups: comp.periphs.printers (More info?)

On Fri, 13 May 2005 01:44:00 +0000, wrote:

> Most domestic vacuum cleaners will pick up the majority of it

And it will pass straight through the filters and out the exhaust. It's
not urban legend. I did it many years ago on a Panasonic "bottle fed"
laser (KX-P4450? maybe?) which someone had "refilled" by emptying the
waste toner back into the main hopper :-(

Fortunately, it was done outside. There was a black streak up the wall
where the vacuum clean exhaust was pointed.

--
Dave

 

[Tony]

Archived from groups: comp.periphs.printers (More info?)

Fair enough, I guess it depends on the vacuum cleaner, I have used domestic
cleaners in an emergency with no problem, perhaps they had the fine filters
that are quite common now for anti-allergenic situations, who knows. Waste
toner is good for adding to concrete, gives that streaky look :-(
Tony


DaveG <dave-ng@nospam.tld> wrote:
>On Fri, 13 May 2005 01:44:00 +0000, wrote:
>
>> Most domestic vacuum cleaners will pick up the majority of it
>
>And it will pass straight through the filters and out the exhaust. It's
>not urban legend. I did it many years ago on a Panasonic "bottle fed"
>laser (KX-P4450? maybe?) which someone had "refilled" by emptying the
>waste toner back into the main hopper :-(
>
>Fortunately, it was done outside. There was a black streak up the wall
>where the vacuum clean exhaust was pointed.
>
>--
>Dave

 

[Guest]

Archived from groups: comp.periphs.printers (More info?)

Tony,

Okay, I managed to do a test printout, stop printer and look at the
drum. The result is: The dirt is around the lines already on the drum.

So, laser or "mirror" is dirty, which is very possible since when I
looked indepth with the flashlight I saw tons of toner in there.

The problem is: I cannot find any resonable way to access the deeper
areas, I really need a Xerox 8830 service manual, can anyone help?

Also: Is that normal for the laser plotter to leak this way? Looks
kinda scary and incredible waste.....

Regards

Kirill

On Thu, 12 May 2005 20:14:55 -0000, Tony <> wrote:

>Kirill
>I don't work on Xerox lasers unfortunately (due to some local difficulty with
>Xerox, they refuse to sell us or any other independant repairers any parts!!!).
>Try this (Paul has suggested something similar) -
>Send a page to be printed with a reasonable amount of data on it, open the
>cover when you think the paper is about to enter the fuser. Remove the
>cartridge, carefully remove the paper (the toner will not be fused and will be
>easy to smear) and examine the drum and the paper.....what is the image like on
>the drum and on the paper, let me know.
>Tony
>
>Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>>Dear Tony,
>>
>>This is a Xerox 8830 Laser Plotter.
>>
>>Jesus, this thing was DIRTY with Toner when I got it. So the first
>>thing I thought of was dirty mechanics, but this really should go away
>>after some prints, but it did not here.
>>
>>Regards
>>
>>Kirill
>>
>>On Thu, 12 May 2005 19:42:26 -0000, Tony <> wrote:
>>
>>>Kirill
>>>Please advise the make and model of the printer - that may help.
>>>First thoughts are....
>>>1. There are horizintal lines on the paper, caused possibly by a bad
>>>cartridge,
>>>in some models this can be caused by a near empty cartridge. Have you tried
>>>changing the cartridge? If not the cartridge then it could be the fuser.
>>>Knowing the model will assist.
>>>2. The strange ghosting around the print is worrying, it may be related to
>>>the
>>>lines, if not then it is either laser optics, laser or DC controller problems.
>>>
>>>Please advise model since without that I can only guess.
>>>Tony
>>>
>>>
>>>Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>>>>Hi.
>>>>
>>>>I have a laser printer which produces very "dirty" prints, can someone
>>>>with printing knowhow tell me what is the probable cause for this?
>>>>
>>>>The image of bad print is located at:
>>>>
>>>>http://www.kukugaga.com/images/8830_badprint.jpg
>>>>
>>>>Thanks!
>>>>
>>>>Kirill
>>>>-------------------------------------------------
>>>>When replying via E-Mail, please remove duplicate
>>>>"@" from the address.
>>>>
>>>>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>>>>Addresse herausnehmen.
>>>>-------------------------------------------------
>>
>>-------------------------------------------------
>>When replying via E-Mail, please remove duplicate
>>"@" from the address.
>>
>>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>>Addresse herausnehmen.
>>-------------------------------------------------

-------------------------------------------------
When replying via E-Mail, please remove duplicate
"@" from the address.

Bei Antwort via E-Mail, bitte doppelter "@" aus der
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-------------------------------------------------

 

[Tony]

Archived from groups: comp.periphs.printers (More info?)

Kirill
No it is not normal for any laser printer to dump toner, the toner cartridge
will need to be replaced or repaired or you will continue to get toner dumps.
Try http://www.manuals4you.com/ for the service manual, couldn't see it listed
there but ask him if he has that model. Failing that do a search for the manual
or ask for it one one of the laser printer forums. Check the compliance label
on the printer (where the serial number is) and make sure of the model number.
Tony

Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>Tony,
>
>Okay, I managed to do a test printout, stop printer and look at the
>drum. The result is: The dirt is around the lines already on the drum.
>
>So, laser or "mirror" is dirty, which is very possible since when I
>looked indepth with the flashlight I saw tons of toner in there.
>
>The problem is: I cannot find any resonable way to access the deeper
>areas, I really need a Xerox 8830 service manual, can anyone help?
>
>Also: Is that normal for the laser plotter to leak this way? Looks
>kinda scary and incredible waste.....
>
>Regards
>
>Kirill
>
>On Thu, 12 May 2005 20:14:55 -0000, Tony <> wrote:
>
>>Kirill
>>I don't work on Xerox lasers unfortunately (due to some local difficulty with
>>Xerox, they refuse to sell us or any other independant repairers any
>>parts!!!).
>>Try this (Paul has suggested something similar) -
>>Send a page to be printed with a reasonable amount of data on it, open the
>>cover when you think the paper is about to enter the fuser. Remove the
>>cartridge, carefully remove the paper (the toner will not be fused and will
>>be
>>easy to smear) and examine the drum and the paper.....what is the image like
>>on
>>the drum and on the paper, let me know.
>>Tony
>>
>>Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>>>Dear Tony,
>>>
>>>This is a Xerox 8830 Laser Plotter.
>>>
>>>Jesus, this thing was DIRTY with Toner when I got it. So the first
>>>thing I thought of was dirty mechanics, but this really should go away
>>>after some prints, but it did not here.
>>>
>>>Regards
>>>
>>>Kirill
>>>
>>>On Thu, 12 May 2005 19:42:26 -0000, Tony <> wrote:
>>>
>>>>Kirill
>>>>Please advise the make and model of the printer - that may help.
>>>>First thoughts are....
>>>>1. There are horizintal lines on the paper, caused possibly by a bad
>>>>cartridge,
>>>>in some models this can be caused by a near empty cartridge. Have you tried
>>>>changing the cartridge? If not the cartridge then it could be the fuser.
>>>>Knowing the model will assist.
>>>>2. The strange ghosting around the print is worrying, it may be related to
>>>>the
>>>>lines, if not then it is either laser optics, laser or DC controller
>>>>problems.
>>>>
>>>>Please advise model since without that I can only guess.
>>>>Tony
>>>>
>>>>
>>>>Kirill Ponazdyr <ng1@@codeangels.com> wrote:
>>>>>Hi.
>>>>>
>>>>>I have a laser printer which produces very "dirty" prints, can someone
>>>>>with printing knowhow tell me what is the probable cause for this?
>>>>>
>>>>>The image of bad print is located at:
>>>>>
>>>>>http://www.kukugaga.com/images/8830_badprint.jpg
>>>>>
>>>>>Thanks!
>>>>>
>>>>>Kirill
>>>>>-------------------------------------------------
>>>>>When replying via E-Mail, please remove duplicate
>>>>>"@" from the address.
>>>>>
>>>>>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>>>>>Addresse herausnehmen.
>>>>>-------------------------------------------------
>>>
>>>-------------------------------------------------
>>>When replying via E-Mail, please remove duplicate
>>>"@" from the address.
>>>
>>>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>>>Addresse herausnehmen.
>>>-------------------------------------------------
>
>-------------------------------------------------
>When replying via E-Mail, please remove duplicate
>"@" from the address.
>
>Bei Antwort via E-Mail, bitte doppelter "@" aus der
>Addresse herausnehmen.
>-------------------------------------------------

 

[orrin]

The problem here is two-folds you first have to clean the unit.
Second you must do a general maintenace in replacing the developer and corona wire for the charging process and check the fuser and it cleaning web for your lines.