Question about Brother IntelliFAX 4100 Laser Fax

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Sending fax error only

When we print the printer works fine, but if we copy or transmit a fax, at odd intervals there is a 2" wide black skid mark in the middle of the fax. I cleaned the white strip and the glass light bar to no effect. We are still getting the black mark. It looks like a rubber roller skipped or something...very odd.

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Re: sending fax error only

Can you post some images of exactly what this looks like? Just make a few copies of a blank sheet of paper if you need to - actually that would probably be better so we'd get nothing but the skid mark. I might be able to make some educated guesses about it once I see it.

Posted on Aug 30, 2007

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Whenever i send a fax, the machine confirms by viewing 'TRANSMITTING OK' but the addressee receives a blank document

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It could also be your fax that is faulty, or even the receive sites fax, also being faulty.

To test your copy-head, insert a document into your loading section of the fax and press copy. If the copy prints out fine, then you know the head is reading correctly.

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I'm noticing black streaks in my copies, how do i clean it?

Open the feeder from the top of the will see a thin strip of glass maybe 1/2" wide running from the rear of the machine to the front..odds are there is glue/dirt/corrector fluid or some other dirt on the glass. Clean this off.

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We have a Brother 4100 Fax Machine. When we send a fax or make a copy, there is a black bar about 2" wide that shows up the length of the page. It does not appear on incoming faxes. I believe it is...

Make sure the **** glass is clean, use a micro fiber cloth to wipe the debris/old toner or white out off the glass. restart the fax machine. If it prints this black line from a copy and it is 2" wide after you have cleaned both the glass and the white reference bar, most likley the scanner itself has failed. for further assistance.

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Do your incoming faxes have the same marks?
If not you might find that the scanning part of your machine has a dirty mark on the glass or that the unit has become faulty.
Try and take a copy from the machine and print from a report or any print from memory.
If you have the black lines on both then i'd suggest getting a new drum unit, if u have it only on the copy I would have a look at your scanner glass and see if there is a dirty mark on it. if not maybe call out an engineer as the scanner unit maybe faulty.
Need anymore help msg me.

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I have problem with a quality of fax

Make a COPY and see how the copy comes out. If you see the same black vertical lines that other people are seeing, then you probably have something like whiteout on the scan glass.
Open the fax top cover where you feed your originals, and then look inside for a piece of glass about 10" long by 1/2" wide. Then I would try cleaning the glass with rubbing alcohol and also go over it again with windex.
After cleaning the glass, try making another copy to see if it has improved. If it has, but still has more lines, then try re cleaning the glass.
Hope this helps.
Good luck.

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I've seen this before. Since the printer portion is working fine that points to the scanner mechanism as the culprit. There are two things I have seen cause this. 1) If the line is a perfect rectangle all the way to the edge of the page then the light bar itself is dying and there isn't much you can do to save the unit. Send it in for warranty repair if you have the option. 2) If the line is more like a skid mark like you mentioned, then the paper that is being scanned is not pressing up fully against the light bar. Not enough light is bouncing off the page and the scanner can't read it well. This can also be caused by a roller not feeding correctly and then bunching up the paper a little bit. I would check the rollers for wear or something being off center. This can sometimes be caused if the machine has ran a high volume or thick paper. I would really think the cause would be one of these two since you are getting the marks at odd intervals, if the intervals were regular it could *possibly* be the drum but as I stated before, with the print function working right, I doubt it.

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