Question about Sharp AR-M277 All-In-One Printer

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Black line left on copies from the document feeder

I have cleaned the heck outta my glass and the slit of glass, but I can not get this black line to quit printing on my copies. Every time we feed a piece of paper thru the doc feeder, a black line about 11/2 inch up from the bottom of the page is this line all the way across the page. Does anyone have any suggestions on what I could check or clean???

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  • AKcopow Feb 15, 2008

    At least I thought it was the glass...I just did the flashlight suggestion and the only thing I saw was some excess toner which I promptly Canned Air'd it but could not find a staple or piece of dirt. And the scratch does look like it is under, not on the top. Our machine does not staple - and I try to keep a good eye if someone has left a staple in their paper when they make copies; no one has done so.

    The line is a thin line - it was a bit thicker, but after I cleaned it it DID decrease in size, but still very noticeable on the copies. I have taken the WHOLE glass off - both pieces - and cleaned both sides. I heard a rumor that one of my rollers might have a fuzzy thing or dirt on them but I did not see anything. Should I check all rollers that I can see/get my hand on??

  • AKcopow Feb 15, 2008

    As far as I know, the glass has never been rotated. We had this issue a while back, and we were instructed to clean that slit well - which we did - and the line went away, but not its back!

    I was told, way back in the day, to use alcohol wipes to clean the rollers and that is what I used. I also used a can of Glass Cleaner (the foaming stuff) to clean the top and bottom of the glass and slit, not Windex

    I just did the blank suggestion and I still get the line. My boss wanted me to take out the slit, so I just did and holding the slit of glass to the light - you can see this faint, almost like a buffed line run right up thru the middle of the glass piece! Would this cause my lines? I did not notice this before - and it looks like the back a CD that has been tossed around...but it is right in the middle of the glass and very faint. You have to tilt the piece just right, like a hologram, to see the scratch. What do I do now?!!

  • AKcopow Feb 15, 2008

    OMG! How do I rank you up for help?!! I did your newest suggestion - basically feed it thru the doc feeder landscape and auto adjust the image to print portrait; not exaclty what you said to do but thats what I did to the machine - and NO LINE!! Well, there is, but now it is along the side of the paper but NOT interferring with any of the information we were needing to copy!

    I will CERTAINLY take your advice about taking that to a glass shop - we happen to have one of those right behind our shop. I am sure the manual for our machine would let us know if there are any sensor's in the glass, right? I can look and see NO wires attached but I have no idea bout the sensor's. Thank you SO much for all your help!! I am sure my employee's can deal til we get a new slit piece.

    Do you happen to know if I can contact Sharp for that part - or order it online versus going to a glass shop? Again, THANK YOU so much for all the help. I will surely use this site again for ANY problems that I have with our office machines. THANK YOU!!

  • brian c
    brian c May 11, 2010

    At this point there isn't much you can do besides replace the glass. The "hazing" is causes by the constant "buffing" action of the paper rubbing on it.

    It will cause the lines because the original is only "rolled" over the slit glass, as opposed to the old style copiers that transported the entire original onto the large glass.

    If you're absolutely sure it only happens through the feeder, there IS one option..

    Change the letter trays to "letter r" (long ways) configuration, and put the originals in long ways, that way the scratch isn't in the scanning area. This may take some time to teach the office staff the new orientation, but you won't have to buy a new slit glass.

    PS: If the glass doesn't use any wires (some have sensors attached), you can take it to a glass shop and have one made relatively cheap. Just make sure it's the correct thickness.

  • brian c
    brian c May 11, 2010

    If the scratch appears to be on the underside of the glass, is is possible this has happened before and the tech (?) rotated the glass once already?

    Keep i mind, that if the line is on the front side of the copy, then the culprit is towards the rear.

    Example: Run a blank sheet through the feeder. Then take the copy and rotate it so the line is on top. Line it up on the scale plate. Look in the corresponding area on the slit glass, and also on the reflector plate near the exposure lamp.

    What are you using to clean it?

    If it's an ink blob, windex will NOT take it off no matter how hard you rub! Use rubbing alcohol.

  • brian c
    brian c May 11, 2010

    Glad to see that you have troubleshot it down to the slit glass.

    Is there a possibility the slit glass is scratched from a staple being dragged over it?

    Is the line thin, or thick?

    Use a really bright flashlight, it may be something on the underside of the glass.

    It doesn't take much to cause a line.



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Ah, the beauty of digital manipulation :)

In the old days you would have to change the paper in the tray too...

I've been looking online for the glass, and can't locate it. They will charge you a bundle for a piece of glass anyway (I know Konica charges about $50 one).

As to the question of a sensor. If there's no wire on it, there's no sensor. Some manufacturers use a "coating" that goes to a ground wire for anti-static, etc. Most likely, yours doesn't require this.

Also, to prolong the life of the new glass (now don't tell ALL of my secrets) use armor-all, car wax, even pledge (the wood stuff) on a rag and buff the glass. Just a dab will do.

I'll keep looking online for the part for ya.

Good luck!

Posted on Feb 15, 2008


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