Question about Konica Minolta magicolor 2500W Laser Printer

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White stripes down my page.

Same problem as someone else; recently changed cartridges and suddenly white streaks appearing page after page which renders my work useless, and a complete waste of ink.

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Make sure that the corona wire is clean (use a dry bristle haired artists paint brush or use the cleaning pad supplied with the printer) and making sure that the toner cart cleaner / scraper is not clogged or has some paper jammed on it. Also you can vacuum the Corona Wire with a domestic vac and the nozzle tool or a clean soft brush tool but make sure the printer is turned off before doing it.

Posted on Aug 30, 2009

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Vertical white skreaks when printing


Check the remaining service life of the drums, also check the condition of your transfer belt. It is most likely your problem is one of those two elements.

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Black 3e Cartridge


check the printer head and roller inside the printer

also check the nozzle because it may be clogged due to some
dust

Jul 03, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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This started out as error 5200. Now, my Canon MX340 printer isn't connecting to the computer. The computer acts like the printer hasn't been installed. I tried to remove the printhead and restart...


Issue: How do I align the print head?
Solution: Perform a Print Head Alignment (Windows)- MX340

Aligning the Print Head Position Print head alignment corrects the installation positions of the print head and improves deviated colors and lines. The procedure for performing print head alignment is as follows:

alignike.gif Print Head Alignment

  1. Open the printer driver setup window
    • In Windows Vista, select the Start menu -> Control Panel -> Hardware and Sound -> Printers.

    • In Windows XP, select the Start menu -> Control Panel -> Printers and Other Hardware -> Printers and Faxes.

    • In Windows 2000, select the Start menu -> Settings -> Printers.


  2. Right-click your model name icon, and then select Printing Preferences from the displayed menu.

    The printer driver setup window appears.

  3. Click Custom Settings on the Maintenance tab.
    The Custom Settings dialog box opens.

  4. Check the Align heads manually check box.

  5. Click Send, and click OK when the confirmation message appears.

  6. Click Print Head Alignment alignike.gif on the Maintenance tab The Start Print Head Alignment dialog box opens.



  7. Load three sheets of A4 size or Letter size plain paper into the rear tray (3).

    t_10410ce_mx34014.jpg

  8. Execute head alignment Make sure that the machine is on and click Align Print Head.
    Follow the instruction in the message.

  9. Check the printed pattern
    Enter the numbers of the patterns with the least amount of streaks in the associated boxes.
    Clicking the patterns with the least amount of streaks in the preview window, will automatically set their numbers in the associated boxes.

    print_pattern1.gif

  10. When you have entered all the necessary values, click OK.

    Note:
    • If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical white streaks.

      vertical_ab.gif
      (A) Less noticeable vertical white streaks
      (B) More noticeable vertical white streaks

    • If it is difficult to pick the best pattern, pick the setting that produces the least noticeable horizontal white streaks.

      horizontal_ab_black.gif
      (A) Less noticeable horizontal white streaks
      (B) More noticeable horizontal white streaks

  11. Confirm the displayed message and click OK.
    The second pattern is printed.
    Important: Do not open the Scanning Unit (Cover) while printing is in progress.

  12. Check the printed pattern
    Enter the numbers of the patterns with the least amount of streaks in the associated boxes.

    Clicking the patterns with the least amount of streaks in the preview window, will automatically set their numbers in the associated boxes.

    print_pattern2.gif

  13. When you have entered all the necessary values, click OK.

    Note:
    • If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical white streaks.

      vertical_ab.gif
      (A) Less noticeable vertical white streaks
      (B) More noticeable vertical white streaks


  14. Confirm the displayed message and click OK.
    The third pattern is printed.
    Important: Do not open the Scanning Unit (Cover) while printing is in progress.

  15. Check the printed pattern
    Enter the numbers of the patterns with the least noticeable horizontal stripes in the associated boxes.

    Clicking the patterns with the least noticeable horizontal stripes in the preview window, will automatically set their numbers in the associated boxes.

    print_pattern3.gif

  16. When you have entered all the necessary values, click OK.

    Note:
    • If it is difficult to pick the best pattern, pick the setting that produces the least noticeable horizontal white stripes.

      horizontal_ab_cyan.gif
      (A) Less noticeable horizontal white stripes
      (B) More noticeable horizontal white stripes
Note: To print and check the current setting, open the Start Print Head Alignment dialog box, and click Print Alignment Value.

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1 Answer

Hp 4550 vertical line down center of page


From the service manual:


Vertical lines or streaks
 Check for a leak where light might be entering the printer.
 Check for circumferential scars on the photosensitive drum. If scars are present, replace the
drum cartridge if the line goes through all colors.
 Check for circumferential scars on the upper fusing roller. If scars are present, replace the upper
fusing roller if the line goes through all colors.
 Remove the imaging drum and inspect main charger or imaging drum for a contaminant, such as
a fiber, if the line goes through all colors.
CAUTION Do not expose the imaging drum to light for more than 15 seconds. The drum is light sensitive, and
exposure to light can cause permanent damage.
Vertical black lines
 The toner cartridge is defective.
 The toner cartridge is not seated properly.
 The fuser entrance is dirty.
 The fuser has scratches on it.
 This might be a repetitive defect. If so, the lines will repeat at a consistent interval down the page.
 The printer needs to be cleaned.
 There is a problem in the heating element.
Vertical white lines
 If white lines or streaks appear only in the black areas of the printed media, print several
configuration pages to clear the anomaly. If this does not clear the problem, check the sleeve
surface to confirm the defect, then replace the black toner cartridge.
 If white lines appear only in a particular color, try printing several configuration pages to clear the
error. If the error does not clear, check the sleeve surface to confirm the defect, then replace the
defective toner cartridge.
 There is a lack of toner or the toner cartridge is faulty.
 There is dirt in the laser path.
 The fuser is defective.
 A mirror in the laser scanner is dirty.

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1 Answer

Streaking copies


Have you changed the drum unit recently or emptied out the waste toner in the drum unit? If not try to empty the waste toner and clean the area that is right under the drum unit... * Note* do not wear any thing white... Toner can make a vey big mess...

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1 Answer

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If you changed your developer? Or did you change the Toner Cartridge?
White stripe? Check the charge on the drum, it might have a piece of dust on it.
take the charge out, (dont take it apart) hold it up to some light, you might see some dust particles hanging in the grid. If so, rub very lightly with finger, do not use a cloth to clean. Blow it with a can of air.
Clean the transfer charge as well
Usually replace those as it is such a pain to clean on the smaller machines.
if you need any further help let me know
Thanks

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1 Answer

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I've refilled the toner cartridges a few times now and never had a problem with vertical streaks until recently. I refilled both the cyan and magenta and when I ran the test page I had dark vertical streaks on both sides. I fiddled around cleaning things, running cleaning paper through, changing reset resistors but to no avail so eventually decided to buy a replacement refurbished cyan cartridge since the streaks looked mainly blue and bingo... well almost now I just have very light magenta streaks. The issue is obvious when I compared the old and new cartridge, the replacement toner is a much duller cyan and is of the wrong consistency since once it's been in the printer everything gets covered in it which is why I think it causes the banding to occur. I'm just trying to work out now whether to try refilling the magenta again (v. messy) or just go for another refurbished cartridge (£34).

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You just might have a faulty black toner cartridge think back did the problem arise when you installed the new black cartridge. Also is the toner a original if not change for a original.

Hope this Helps
Thanks J

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1 Answer

White "Stripes" across page


REPLACE PAPER AND THE INK CARTRIDGE

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