Continuous dots in the print

Remove the transfer belt and clean it GENTLY with alcohol (Iso-propanol preferred but Meths will work) on a cotton ball or very soft cloth. Rotate the belt as needed until all the surface has been cleaned. You may need to go round several times to clean off persistent spots. Patience is better than pressure. If spatters continue check the fusers. It is also possible that there are toner spots on the drums which can also be cleaned off with Iso-propanol on a cotton ball

Dear
It is likely the fault at toner cart. May be paper dust or any small particle clogged in cleaning blade of the toner cart, that ma be cleaned with dry cotton lint free cloth. take care not to scratch the green OPC drum, if dots are marked on the surface of OPC drum clean with isopropyle alcohol.
take care not blow toner as it fine bellow 50 micron.

Thanks.

Try to print clean page ,
Print a cleaning page During the printing process, paper, toner, and dust particles can accumulate inside the printer and can cause print quality issues such as toner specks or spatter, smears, streaks, lines or repeating marks. Follow these steps to clean the printer's paper path.

1. Load copier-grade paper (not bond, heavy, or rough paper).
2. On the printer's control panel, touch the Menu button.
3. Touch Configure Device .
4. Touch Print Quality .
5. Touch Process Cleaning Page .

A Cleaning message appears on the printer control panel display while the cleaning is taking place. The cleaning process takes a few minutes to complete. Do not turn the printer off until the cleaning process has finished. A page will be printed when the task is complete. Discard the page. You might need to repeat the cleaning process to thoroughly clean the printer. Print a few more pages to see if the problem is resolved.

Hi,
Dots, Lines and smudges on the printouts are due to deteriorating cartridges and cleaning the green drum of the cartridge may help temporarily. Take out the cartridge and gently clean the roller/ green drum with a dry, soft, lint-free cloth wiping off the toner dots marks/ lines. (corresponding to the location where you are having a green line on the paper)
Also, make sure that the visible inside of the printer is clean and there is no spilled toner inside, which sometimes results in dots.
Moreover, streaks (thicker lines) and dots etc indicate faulty PCR Roller which is located behind the green drum inside the cartridge. Replace the Cartridge or get the PCR Roller changed by a professional.
Try cleaning the toners and see if it makes any difference. You would also have an idea about the toner drum/ parts quality etc and check if they need to be replaced. Furthermore, issues with Laser Unit like dust/ toner dust on the lenses and mirrors inside the printer usually result in faded or discolored prints. For instance, faded text/ picture at certain areas or any color missing when you print.

Hope it helps! Good Luck! Thanks for using Fixya!
CreativeTECH

Dots, Lines and smudges on the printouts are due to deteriorating cartridges and cleaning the green drum of the cartridge may help temporarily. Take out the cartridge and gently clean the roller/ green drum with a dry, soft, lint-free cloth wiping off the toner dots marks/ lines.
Also, make sure that the visible inside of the printer is clean and ther is no spilled toner inside, which sometimes results in dots.
Let me know if any further clarification/ assistance is required.


GoodLuck!
Dont forget to appreciate the solution if I could have been of any help!
CreativeTECH

Hi,
Dots, Lines, shadows and smudges on the printouts are due to dirty/ deteriorating cartridge and cleaning the green drum of the cartridge may help temporarily. Take out the cartridge and gently clean the roller/ green drum with a dry, soft, lint-free cloth wiping off the toner dots marks/ lines.
Also, make sure that the visible inside of the printer is clean and ther is no spilled toner inside, which sometimes results in dots. Double printing is also due to the deteriorating cartridge. The drum is not getting clean after its each rotation and hence the remaining toner/ image is transferred to the paper resulting in double printing. So, it is recommended that clean the drum etc (this would help temporarily). Also, make sure that the toner cartridge is in good working condition. If not you may replace the cartridge.
Let me know if any further clarification/ assistance is required.


GoodLuck!
Dont forget to appreciate the solution if I could have been of any help!
CreativeTECH

Dots, Lines and smudges on the printouts are due to deteriorating cartridges and cleaning the green drum of the cartridge may help temporarily. Take out the cartridge and gently clean the roller/ green drum with a dry, soft, lint-free cloth wiping off the toner dots marks/ lines.
Also, make sure that the visible inside of the printer is clean and ther is no spilled toner inside, which sometimes results in dots.
Let me know if any further clarification/ assistance is required.


GoodLuck!
Dont forget to appreciate the solution if I could have been of any help!
CreativeTECH

Rev. Gregory.
Its looks like you have a small pinhole, or divot, on a imaging conponent that is common to all four toner cartridges. Remove the drum unit from the prtr and keeping the green handle close to you pull back the shutter which covers the drum, and look for spots of toner at the either end. If you hold the page with the spots on it, with the leading edge centered and touching the drum, it will give you some idea where the edgeis relative to the end of the drum. If you can't see any corresponding spots on the drum surface.
Put the drum unit back into the prtr and allow the prtr to restart, then switch off and remove drum, this will have turned the drum to a new position, and should show any defects. Only expose the uncovered drum to light for a minute at a time, and avoid touching the surface.
Let me know what you find.
Cheers
DeJudge

Brother e-mailed me back when I e-mailed them about my similar problem. Here is what was said:Printer Customer Service CAMay 6 Brother Customer: Thank you for taking the time to write us in regards to the colored spots print quality issue that you are experiencing with your HL4070CDW. Brother strongly recommends that customers do not use generic drum units and/or toner cartridges, or refill their Brother toner cartridge. Each Brother laser printer is designed to work at pre-set temperatures that are matched exactly to each of our individual toner formulations. Each individual component is designed to work with the other to ensure quality and reliability. Using non-Brother supplies may affect the hardware performance, print quality and machine reliability. The Brotherlimited warranty does not apply to any problem that is caused by the useof unauthorized third party drum units, toner cartridges or toner. If you are experiencing white or color dots/spots on the printed pages, clean the drum unit: 1. Open the MP (Multipurpose) tray by pulling it toward you and lower itgently. 2. Pull out the MP tray support and unfold the flap. 3. Place 3 sheets of regular plain 20 lb paper in the MP tray or the cleaning sheet sent by Brother. 4. On the control panel, press the following keys one by one - OK, GO, OK. The keys strokes should not have any pauses between them. The display should turn an orange color and a zero should appear on the leftside of the display. 5. Press the DOWN arrow key until 31 appears on the display. Press the OK key. 6. Press the GO key. PLEASE WAIT appears on the display. The machine will pull one sheet from the manual feed tray. 7. DRUM CLEANING COMPLETED will appear on the display once the sheet hasbeen pulled through the machine. 8. Press the GO key again to feed the remaining sheets. 9. When the last sheet has been fed through the machine, press the CANCEL key. 10. From the Ready screen, print a test page by pressing the OK key. a. MACHINE INFO will appear on the display. Press the OK key. b. Press the DOWN arrow key until TEST PRINT appears on the display. Press the OK key. c. When the page has printed, press the CANCEL key to return to the ready screen. 11. Check the sample for dots: a. If the dots disappeared, the issue has been solved. Please keep in mind that the type of media, could introduce paper dust or spec#s that could adhere to the drum surface, contaminating it. b. If the dots still remain continue with the next steps. 12. How many dots do you see? a. If you see 3 or 4 dots in a vertical line (every 75mm or 3 inches), continue to STEP 13. b. If you see 7 or 8 dots in a vertical line (every 62.8mm or 2.5 inches), your toner cartridge has an issue, please replace the proper toner cartridge according to the color of the dots, we Brother strongly recommends that customers do not use generic toner cartridges, or refilltheir Brother toner cartridge. The Brother limited warranty does not apply to any problem that is caused by the use of unauthorized third party toner cartridges. Go to Warranty Options. 13. Press down on the front cover release lever and open the front cover by pulling it towards you. 14. Hold the green handle of the drum unit (labeled 1). Lift the drum unit up and then pull it out until it stops. NOTE: If you cannot pull the drum unit out, make sure that the front cover is fully open. 15. Remove the toner cartridge that is causing the dot, by holding the handle of the cartridge and lifting it up and out of the drum unit. Note: We recommend you place the toner cartridge(s) on a clean, flat surface with a piece of disposable paper underneath it in case you accidentally spill or scatter toner. 16. Once you have removed the toner cartridge, check in the open slot where the toner was installed for dots, smudges or paper spec#s on the drum surface cylinder. 17. If you see something out of the ordinary, please try to gently (do not scrub or use wiping motion, because this may damage the drum), cleanthe drum surface with a cotton swab until the dust or paper powder comesoff. You can spin the Drum in question by rotating it, with the gear located on the bottom left side of the drum. Note: The Drum is photosensitive, DO NOT touch it with your finger, and do not clean the drum with any sharp objects, because this may damage the drum. 18. After gently cleaning the Drum surface, reinstall the toner cartridge you removed. 19. Push the drum unit back into the machine until it clicks into place and close the front door. 20. Print a sample page. If the issue continues the printer may need service. If the printer is in warranty, call Brother Customer Service at 1-877-Brother (1-877-276-8437) for warranty options. If the printer is out of warranty, contact a Brother Authorized Service Center for repair by clicking on the link below: http://www.brother-usa.com/service/default.aspx We apologize for any inconvenience you may have experienced. Sincerely, Printer Customer Service Brother International Corporation Your opinion matters to us. Click the link below to take a quick survey regarding our email response. http://www.brother-usa.com/Surveys/Survey.aspx?SID=97 Original Message Follows: ------------------------ Email from Ask Us Customer: ======================================================= Sent: 5/4/2009 11:05:45 PMModel: HL-4070CDW Date of purchase = 02/17/2009 Operating System = Mac OS 10.5 Computer type = Apple Brand & Model = Mac Mini Processor speed = 1.83ghz & 2.5gb RAM Connection configuration = (Selected) Network Print Driver = Brother HL-4070CDW series CIUPS Description of issue = My Brother HL-4070CDW is still very new and I've done a few printouts with it. I am noticing color spots on the left. Seems to just be blue. I did a color calibration from the printer's menu, but didn't seem to fix the problem. I posted on fixya.com over here: http://www.fixya.com/support/t2060775-color_spots_left_margin_when_printing_hl Seems someone else is having the same problem too, but with black spots on the left: http://www.fixya.com/support/t2128778-black_spots_appearing_left_margin_page Lastly, here are pictures of the problem: http://twitpic.com/4knub http://twitpic.com/4knr7 Alarm Lights = My Brother HL-4070CDW is still very new and I've done a few printouts with it. I am noticing color spots on the left. Seems to just be blue. I did a color calibration from the printer's menu, but didn't seem to fix the problem. I posted on fixya.com over here: http://www.fixya.com/support/t2060775-color_spots_left_margin_when_printing_hl Seems someone else is having the same problem too, but with black spots on the left: http://www.fixya.com/support/t2128778-black_spots_appearing_left_margin_page Lastly, here are pictures of the problem: http://twitpic.com/4knub http://twitpic.com/4knr7 Date of purchase = 02/17/2009 from Brother USA site

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. 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.
   

4. 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.
   
Note
• Do not use a scrubbing or wiping motion because this might damage the drum.
  
• 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.
5. If the print quality still has not improved you need to install a new drum.