Question about Brother HL 5250DN Laser Printer

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Printed pages have a light shade of toner left on the paper. New drums and new toner.Already cleaned photosensitive roller, got a little better but needs much improvement..

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If there is still some kind of residue on the paper. Take the toner cartage and shake it evenly so that the toner inside is not all lumped to one side. Run the drum cleaner on the printer again and if you are still having problems it may be something else. Inspect the drum which should be smooth and not have any blemishes or scratch marks (alot of cartages are refurbished and may not be perfect). Also check your allignment of the toner cartrage inside the printer, if its a little off you may have problems.

Posted on Jun 26, 2009

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Canon irc4580i print dark problem


In the process used printer, will be inevitable printed page by your printer have the bad quality prints. For example: Toner specks, Light image, Vertical line, Dropouts, background, Toner smear, Vertical black line and band, Vertical white line, Background scatter, Black pages, Loose toner, Horizontal stripes, Ghost, Uneven Density, poor fusing ...
The common print quality problem Canon IRC-4580 printer
Currently, The Canon IRC-4580 is the laser printer have high speed, easy to use, friendly for user and printing clear text.
However, we can not avoid the damage of some components of the printer when used.
In this article, I will introduce some basic errors with printing quality problems of Canon IRC-4580 printer and "How to fix it".
After viewed artical, you know:
- How to fix (repair/solve) Vertical line (black or white) in Canon IRC-4580 printer
- How to fix (repair/solve) Poor fusing (loose toner) in Canon IRC-4580 printer
- How to fix (repair/solve) Uneven Density in Canon IRC-4580 printer
- How to fix (repair/solve) Light image in Canon IRC-4580 printer
- How to fix (repair/solve) Ghost in Canon IRC-4580 printer
1. Fix print quality problem "Vertical line" for Canon IRC-4580 printer How to fix print quality problem Vertical line
This plobrem "Vertical line" is usally error of Canon IRC-4580 printer. For this "Vertical line" error, technicians divided into two smaller error are: Vertical black line and band and Vertical white line.
Description:
- Vertical line and band: On the printed image appear some straight thin black vertical.
- Vertical white line: On the printed image appear some white vertical voids.
Error location:
- Surface of the charge roller
- OPC drum
- Cleaning blade
- LSU unit
- Developing roller

Cause of error "Vertical line" on the printed page:

- May be surface of charge roller scratched or dirty by toner powder.
- May be have some grooves on the OPC drum.
- May be cleaning blade is damaged.
- May be LSU window or LSU lense has dirty.
- May be surface of developing roller has scratched.

How to fix(repair) "Vertical black Line and Band" for {{SPkey1}} machine:

- Replace the charge roller of toner cartridge.
- Replace the OCP drum.
- Replace the cleaning blade
If printed page are not improved
- Clean the LSU unit by soft cotton cloth and try to print. If Vertical line is not clear on the printed page you should replace LSU unit.
- Replace new axis developer and try to print
2. Solve print quality problem "Poor fusing (loose toner)" for Canon IRC-4580 printer. How to fix print quality problem loose toner
Description loose toner: Toner is not properly fixed on paper, use to hand rubbing lightly on the printed image toner powder may be stick in hand
Error location: toner cartridge or fuser unit

Cause of error "Dark Image or black" on the printed page:

When toner cartridge is empty. You toner refilled by toner powder ware not compatible. This is makes toner cartridge components demaged and temperature of fuser unit is not enough melt to toner powder

How to fix(repair)"Poor fusing (loose toner)" on the printed page for Canon IRC-4580 printer:

With this error, you should replace toner cartridge or fuser unit to fix it.
3. How to fix print quality problem "Uneven Density" for Canon IRC-4580 printe How to fix print quality problem Uneven Density
Description: The printed page has one half light and one half clear.
Error location: Toner cartridge, transfer roller, springs, doctor blade

Cause of error "Uneven Density":

- The pressure force on the left and right springs of the transfer roller is not even.
- May be toner low also causes this error
- Doctor blade has bent
How to repair error "Uneven Density" on the printed page for Canon IRC-4580 printer:
- Replace springs and transfer roller.
- Toner refill toner cartridge Canon IRC-4580 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
- Replace doctor blade.
4. How to solve print quality problem "Light image" for Canon IRC-4580 printer How to fix print quality problem light image
Description: The printed image is all light and no Ghost.
Error location: Toner cartridge, Developer, HVPS board

Cause of error "Light image" on the printed page

- Enabled toner save.
- Toner cartridge is low
- OPC drum may be faulty by strong light intensity
- Temperature in room is below than 10*C
- Bad contact caused by the toner dirty between the high voltage terminal in the HVPS and the one in the set
- Abnormalities output from the HVPS

How to fix(repair) error "Light image" on the printed page for Canon IRC-4580 printer:

- Disable toner save by change in printer driver.
- Toner refill toner cartridge Canon IRC-4580 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
- Replace the OPC drum.
- Replace developer.
- After printer is power on, wait 30 minutes then start printing
- Clean up the contact between the high voltage terminal in the HVPS and the one in the se- Replace the new HVPS if the problems are not solved by 4 away above.
5. How to fix print quality problem "Ghost" for Canon IRC-4580 printer How to fix print quality problem Ghost
Description: Ghost occurs intervals of the OPC drum or transfer roller.
Error location: Toner cartridge, Developer, HVPS board

Cause of error "Light image" on the printed page

- OPC drum has fauty.
- The life of the transfer roller has been expired
- The high voltage terminal is contaminated by toner powder or

How to fix(repair) error "Light image" on the printed page for Canon IRC-4580 printer:

- Replace OPC drum
- Replace transfer roller
- If performed 2 away and the error does not clear, you should replace ganuine toner cartridge .
- Replacce HVPS board.

Oct 29, 2016 | Canon Office Equipment & Supplies

Tip

Troubleshooting common laserjet printers problems


In order to understand and troubleshoot a Laserjet printer, I think it is important to understand how the printer functions. Laser printers for the most part contain some standard assemblies: Toner cartridge, Laser Scanning Assembly, High Voltage Power Supply, DC Power Supply, Paper Transport Assembly, Transfer Corona Assembly, Fusing Assembly, Printer Controller Circuitry, and Ozone Filter.
A laser printer undergoes a six step process that helps form images on paper. The six major steps are:

1. CLEANING- This is the first step in the process in which a rubber blade inside the printer cartridge scrapes any toner left on the drum into a used toner receptacle inside the cartridge. A fluorescent lamp discharges any remaining charge on the photosensitive drum (the photosensitive drum or EP drum loses its charge when exposed to light).

2. CHARGING- A special wire called the charging corona within the toner cartridge located above the photosensitive drum receives a high voltage from the High Voltage Power Supply. This high voltage is used to apply a strong , uniform negative charge to the surface of the drum.

3. WRITING- The laser is turned on and scans the drum from side to side, flashing on and off according to the bits of information the printer controller sends as it communicates the individual bits of the image. Where ever the laser touches, the photosensitive drum's charge is reduced to a slight negative charge. As the drum rotates, a pattern of the exposed areas is formed, representing the images to be printed.

4. DEVELOPING- Now the surface of the drum holds and electrical representation of the image being printed. Toner can now be transferred to the areas that were exposed in the writing step. A metallic roller called the developing roller inside the cartridge now acquires a charge from the HVPS. The toner sticks to this roller because there is a magnet located inside the roller and because of the electrostatic charges between the toner and the developing roller. The developing roller rotates toward the EP drum, the toner comes between the the developing roller and EP drum and is attracted to the areas that have been exposed by the laser and the toner is repelled by the areas that were not exposed to the laser. The EP drum continues to rotate until the developed image is ready to be transferred to paper.

5. TRANSFERRING- The developed image into position. The controller notifies the registration rollers that the paper should be fed through. The rollers move the paper underneath the EP drum, and the transfer process can begin. The controller sends a signal to the corona wire or corona roller (depending on which the printer has) and tells it to turn on. The corona wire/roller then acquires a strong positive charge from the HVPS and applies it to the paper. Now that the paper is charged, it pulls the toner from the EP drum and the line of contact between the roller and the paper. Once the rollers move the paper past the corona wire, the static-eliminator strip removes all charge from that line of paper.

6. FUSING- This is the final step in the process where the toner image is made permanent. The roller push the paper toward the fuser rollers. The fuser rollers grab the paper and is now in control of the paper. As the paper passes through the fuser, the 180 degree fuser roller melts the resin of the toner, and the rubberized pressure roller presses it permanently into the paper. The paper continues on through the fuser and then exits the printer.

The following picture will give you a general idea of the process and components.

6e8ecec.gif


TROUBLESHOOTING:

PAPER JAMS- These are by far the most common problem encountered by all printers at one point or another. Some common causes of paper jams are as follows:

1. The paper is wrinkled or has upturned edges, the wrong type of paper is used, the paper is not place properly in the feed tray (usually not even).

2. If paper jams start happening at a frequent rate then the problem could be a worn roller (which can be replaced and are not that expensive). The following pictures shows the rollers.

9016659.jpg

6a2eae9.jpg

3. Anther cause could be related to the drive gear of the pickup roller, shown here:
381b1a8.jpg


BLANK PAGES:

If your printer is printing nothing but blank pages, then the toner is not being put on the paper. There are three major causes for this happening.

1. The toner cartridge could be empty or if you have just bought a new cartridge it is possible that you purchased a defective one. If you forget to remove the sealing tape the toner will not be able to be accessed properly by the printer.

2. The Corona Assembly could have a malfunction such as a missing or damaged corona wire. If this is the case the developed image will not transfer from the EP drum to the paper. The following is a picture of Corona Assembly:
423433f.gif

3. Another cause is the High Voltage Power Supply. If the power supply does not charge the components with the proper voltages. Picture of an HVPS:
451fd29.jpg

REPETITIVE SMALL MARKS OR DEFECTS:

This usually happens with heavily used or older laser printers. The following could be causing the problem.

1. Toner may have been spilled inside the printer.

2. A chip or crack in the EP drum can be another cause which can cause a toner build up and can get stuck on one of the rollers. EP drum picture:
f036288.jpg

VERTICAL BLACK LINES ON THE PAGE:

This can be caused by the following:

1. A groove or scratch in the EP drum.

2. A dirty Corona Wire which prevents a sufficient charge from being placed on the EP drum.

VERTICAL WHITE LINES ON THE PAGE:

The number one cause is the following:

1. This usually happens when proper cleaning and maintenance is not performed on the printer. Foreign matter gets caught on the transfer Corona Wire.

IMAGE SMUDGING:

This happens when you pick up a paper that has just come out of the printer and when you touch the ink, it smudges or smears.

1. The fuser could be malfunctioning or need replacement due to a burnt out halogen light inside the heating roller.
87c0647.jpg

2. Dents or cold spots in the fuser heat roller can also cause the problem.

GHOSTING:

Ghosting is what you have when you can see light images of previously printed pages on the current page. Usually one of two things cause this problem.

1. Bad erasure lamps. This causes the previous electrostatic discharges to not be completely wiped away.

2. A broken cleaning blade. This causes old toner to build up on the EP drum and presents itself in the next printed image.

PRINTER PRINTS PAGES OF GARBAGE:

This happens when the print on the paper comes out like garbage and is not understandable or looks like some government secret code on the page. The following are usually the causes.

1. The printer driver software is not the proper driver for the printer or it is not configured for the correct page-description language (PCL or PostScript).

2. A bad formatter board. Remember the formatter board receives information from the computer and turns it into commands for the various components in the printer.

44a98cc.jpg


The following are some extra pictures to gain a better idea of some of the terminology used in this tip and get a better view of its components.
8c70d6a.jpg


Close up of Laser Assembly and mirrors:
96cb825.jpg


Laser diagram on how the process works:
84c37fe.gif

Fuser Gear:
c0f407d.jpg

Separation pad where pickup roller attached:
de7421c.jpg

Common Fuser Parts:
e7902b2.jpg

HP LASERJET ERROR MESSAGES:

00 Ready--The printer is in standby mode and ready to print.
02 Warming Up--The fuser is being warmed up before the 00 ready state.
05 Self Test--Full self test has been initiated from front panel.
11 Paper Out--The paper tray sensor is reporting no paper in tray.
13 Paper Jam--A piece of paper is caught in the paper path. Open the cover and remove any jammed paper and close the cover.
14 No EP Cart--No EP cartridge (toner cartridge) installed in the printer.
15 Engine Test--An engine self test is in progress.
16 Toner Low--The toner cartridge is low. Replace the toner soon.
50 Service--A fuser error has occurred. Commonly caused by a fuser lamp failure.
51 Error--Laser scanning assembly problem.
52 Error--Scanner motor in laser has malfunctioned.
55 Error--Communication problem between formatter and DC controller.

on Mar 16, 2010 | Office Equipment & Supplies

1 Answer

When the paper prints, the color is missing in areas. It looks like a streak mark down the page. The black ink is full color, they yellow and cyan have a white, non-printed streak down the center, and...


Inspect the rollers for dirty or damaged surfaces. Clean up any loose toner or other debris in the machine. Note: avoid touching any roller with bare skin; especially in the fuser section or the photosensitive drum in the toner section. Skin oil can cause poor print quality or premature degradation of the roller surface.

Jul 06, 2017 | OKI C3200n Led Printer

1 Answer

I have a Kyocera Ecosys FS-1118MFP. When I try to make a copy the page comes out totally black. I have tried to change the toner, but its still the same. Tried adjusting the exposure aswell but invain. Any...


This is an uncommon issue and could be one of several things
  • The formatter could be sending garbage print data to the ECU (rare)
  • The ECU is bad, this controls the laser
  • The high voltage power supply could be bad
  • The the primary charge roller is bad.


Typical laser jet process.
  1. Primary charge roller is charged to -600V and transfers this to the photosensitive drum in the toner cartridge.
  2. Th laser removes the negative charge and places a +600V charge where the image/text will go
  3. Toner is attracted to the positive charged areas on the photosensitive drum (toner is negatively charged)
  4. Transfer roller has a + charge sits under the paper, this roller attracts the toner from the photo roller to the paper
  5. The fuser melts the toner onto the paper

So if the laser is going crazy and removes all the negative charge or no negativ charge is being applied to the photosensitve drum then toner will stick everywhere to it and you get a black page.


How this helps.

Jul 13, 2012 | Kyocera FS-1118MFP Laser Printer

1 Answer

A repeating black dot a few cms apart about 5 down an A4 page. Roller or drum need cleaning? how?


Are the spots at 94mm
intervals? (The problem is not solved after printing a few pages.)

1) If toner or glue remains stuck, wipe it off gently with a
cotton swab. (Refer to NOTE in thebottom of this page.)
2) If the photosensitive drum is scratched or deteriorated (exposed), replace the drum
unit.

Are the spots at 79mm intervals?..

1) Check and clean the heat roller with a cloth dampened with alcohol.
2) Replace the fixing unit.


NOTE:
Clean the drum unit as follows:
(1) Remove the toner cartridge from the drum unit Place the printing samples in front of the
drum unit, and find the exact position of the image defect.
(2) Turn the drum gear by hand while looking at the surface of the photosensitive drum.
(3) Wipe the surface of the photosensitive drum with a cotton swab until the dust or paper
powder on the surface comes off.
!CAUTION:
Do not wipe the surface of the photosensitive drum with something sharp. (ball-point pen
etc.)
Use cleaning liquid which is a 50-50 mixture of ethyl alcohol and pure water.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it and give a testimonial for my response

Thanks, Joe

Feb 21, 2011 | Brother HL-2040 Laser Printer

3 Answers

Black smudges down left side of page


How do I clean white or black spots on printed documents? Description: First make 10 to 15 copies of a blank, white sheet of paper.
If you still see the spots on printed documents after making multiple copies, clean the drum unit as follows:

  1. Remove the drum unit and toner cartridge assembly, and then remove the toner cartridge from the drum unit.
  2. Position the print sample in front of the drum unit so you will know the exact position on the drum that is causing the poor print.
  3. all-ug-19.gif
  4. Turn the black gear on the drum as you check the surface of the OPC drum.
    The OPC drum is photosensitive so do not touch it with your fingers.
  5. all-ug-20.gif
  6. When you find the substance on the drum surface that matches the print sample, gently dab the surface of the OPC drum with a cotton swab that is lightly dampened with isopropyl alcohol.
  7. Note
      • Do not use a scrubbing or wiping motion because this might damage the drum.
        all-ug-21.gif
      • Do not try to clean the surface of the OPC drum with a sharp object, such as a ball-point pen, because this might cause permanent damage to the drum unit.
  8. If the print quality still has not improved you need to install a new drum.

Dec 02, 2010 | Samsung ML 2010 Laser Printer

1 Answer

Dell 3110cn Printer prints shades of pink


Have you pulled out the imaging drum and transfer roller to see if they are caked in Magenta toner? if so they will need to be cleaned off. Would also suggest blowing out the area around the drum to rid of loose toner in that area.

Feb 15, 2010 | Dell 3110cn Laser Printer

1 Answer

New toner prints very light. No setting changes on printer.


I had a similar problem, it turned out to be a cheap toner cartridge. Replaced it with an HP cartridge and have had any problem since.

Mar 23, 2009 | HP LaserJet 4p Printer

3 Answers

My HP1020 prints black shade throughout the page


You have bad toner or a bad toner cartridge. Get a new cartridge.

Mar 12, 2009 | HP LaserJet 1020 Printer

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