Question about Samsung ML 1450 Laser Printer

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Samsung ML-1450 printer

Every time I print, there is a shadow further down the page of what I am printing and general black roller marks. I have tried cleaning the roller inside with some wipes but this makes no difference at all. The print quality apart from this is fine and the writing is all dark enough but all the prints look very messy because of this.

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Sounds like your PCU is starting to fail. There is a cleaner roller that removes any remained toner and this could be shot. Try replacing the PCU. If this makes no difference it could be the fuser though this si less likely.

Posted on May 23, 2007

  • Asim
    Asim Apr 13, 2014

    @Inky Fingers can u please explain PCU. I have the same problem as mentioned above.

  • Inky Fingers
    Inky Fingers Apr 13, 2014

    PCU - photo conductor unit. The cartridge you slide in and out that helps create the image

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6ya6ya

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Hi there,
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Posted on Jan 02, 2017

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Welcome to FixYa!
Solution 1:If you can reach reach for the rollers, clean it with a cotton moisten with a cleaning solvent (an alcohol will do) .
Solution 2.Purchase a "printer roller cleaning paper" from a computer store or an office supplies store.
Note: After the cleaning process from solution 1 or 2, the markings will not immediately go away, it will still take some time but it will surely help speed up the cleaning of the rollers.
Thank you for using FixYa.Have a great day.
Jas

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Brother MFC-6800 1. Prints with 3/8" blank vertical line down the entire page; 2. Prints with a couple of 1/16" blank vertical lines down the entire page; 3. Prints with some gray shadow...


This solution is unconventional but it worked for me. The black roller on my MFC had irregularities on it and was creating horrible printouts. I pulled out the drum and cartridge and cleaned the large black roller. I used furniture polish to make the roller very smooth. Now it prints really nice.

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The black print jobs have a shadow about 3 inches down the page


I had replaced the fuser - no improvement. I removed the fuser, imaging unit & transfer roller. CAREFULLY using a vacuum cleaner I cleaned all units and the internals of the printer, rotating the roller on the imaging unit to clean all parts. (Warning Place Imaging unit on paper as toner escapes) After a few test prints the page cleared and duplicate ghosting cleared.

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Duplicating the top page text at lower page region- Duplicating


Needs a good clean. The fuser isn't completely setting the text so it's sticking to the roller and coming back round on the paper further down.

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HP Laserjet 5P shading edges of page


This is probably due to a defective cartridge, Charge Roller or Transfer roller.

Check the cartridge for a band of toner still on the drum.

Check the Charge roller for oil or smudges, this roller should be a lighter color and should be relatively free of toner or marks.

Same as the Transfer Roll, which will be dark, though excess toner should be evident.

A relatively smooth straight line is generally the cartridge.

A rather wavey or broken line is most likely the rollers.

You can however attempt to print a large amount of pages (25-50) in an attempt to clean the parts, however if either part is defective they will need to be replaced and no manner of printing will clean them.


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It may be the fuser. Take it out and inspect the roller on it:

  1. Switch off the device, disconnect the mains plug and wait for 30 minutes before continuing.
  2. Ensure that the bypass tray is closed, or you will not be able to open the front cover.
  3. Open the front cover by pressing the release buttons as shown.
  4. Pull the front cover down towards you.
  5. Disconnect the green plug - squeeze the sides of the plug and pull.
  6. Push the left and right levers outward to unlock the unit.
  7. Pull the unit towards you as shown and lift it clear of the device.
  8. Check the roller for wear marks, If so replace it.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe




I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

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Is there any way you can post an image of a page. If you can't I'll need to have a vivie description of these marks: -Where they are located. - general shape - location - any pattern - are they getting lighter the more you print. Once we get this information we can start troubleshooting.

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