Brother DCP 7020
Love this printer – but printed copies have faint lines throw the right side have cleaned scanner window have changed toner cartridge what else could be the problem thks

Experienced technical support provide their insights in answering this question :
You give us so little info to go on. Vertical lines, horizontal lines? On copies, on prints, on both?

How to Identify and Fix Common printer Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

This issue is usually caused by foreign material inside the machine (paper dust, glue from labels or envelopes, paper clips, staples, etc.) sticking to or damaging the surface of the drum. This is typically resolved by cleaning and/or replacing the drum unit.
Check the paper type and quality. High temperatures and high humidity will cause paper to curl. Please refer to FAQs “What kind of paper can I use?” and “What is the recommended paper?” If you do not use the machine often, the paper may have been in the paper tray too long.
Check the toner darkness settings.

Sometimes light print can be remedied by simply changing the toner darkness setting in the printer. To change the setting, go to MENU>>SETTINGS>>QUALITY MENU>>TONER DARKNESS. Increase the darkness and send a test print to see if that fixes the issue.

If you notice white or dark lines in your prints (also called banding), try these solutions before you reprint: Run a nozzle check to see if any of the print head nozzles are clogged. Then clean the print head, if necessary. Make sure the paper type setting matches the type of paper you loaded.
Horizontal lines across prints are most commonly experienced with inkjet printers and are usually down to a partially blocked printhead. Inkjet printers from many different manufacturers are prone to this including machines by Brother, Canon, Epson, Dell, Hewlett Packard (HP), Kodak, Lexmark and many more.
There are four primary causes for horizontal banding on prints from inkjet printers, (1) nozzle clogs, (2) mis-aligned print heads, (3) low quality print settings (4) incorrect paper thickness settings. Below we will describe each of these causes for horizontal banding as well as ways to try and fix them.
White lines will typically start appearing on your print outs due to a clogged up printer head. Your first port of call when solving this problem is to run the cleaning program on your printer, which should be accessible through its settings menu.
The most common reason for getting faded prints is having empty or defective toner cartridges. It is unbelievably frequent that people forget to replace their empty toner cartridges and struggle to figure out why their printers print faintly. Another common reason is that people use defective cartridges.
The dot pitch measures how large an individual dot is in a print. A printer may only be able to produce a dot that`s 1/72 of an inch in size, so when printed at 36 dpi, the printer will display white lines between each vertical row in the print. This problem can be resolved by increasing the print resolution.
There are four primary causes for horizontal banding on prints from inkjet printers, (1) nozzle clogs, (2) mis-aligned print heads, (3) low quality print settings (4) incorrect paper thickness settings. Below we will describe each of these causes for horizontal banding as well as ways to try and fix them.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

LIGHT LINES ON PRINTED COPIES
ANSWER : You give us so little info to go on. Vertical lines, horizontal lines? On copies, on prints, on both?

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Brother DCP 7020

canon mx320 copies have blk line down the right side of copies
ANSWER : If you are using the ADF feeder to make copies, then check the small glass on the left side. If there is any dirt or whiteout on the glass, it will result in a line down that spot. You can confirm it by looking at the copy that has the line. If it is dirt on the glass, the line won’t go all the way from top to bottom. There will be a margin on each end.

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Brother DCP 7020

Black line on printed copy
ANSWER : Have absolutely no idea what kind of machine you have so here’s the generic answer. Big copy glass, little copy glass to the left of it. Take window cleaner, put it on paper towel, clean little glass.

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Brother DCP 7020

vertical lines in the print
ANSWER : Looks like a bad wiper blade in the toner cartridge. They are rubber and with age. Their function is to clean off residue toner on the drum, similar to a windshield wiper blade cleaning off rain drops.

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Brother DCP 7020

Black line printing in the middle of the page from top to bottom
ANSWER : Take out the toner cartridge and look at the drum. If you see the line, replace the cartridge. If you don’t, then you need to replace the fuser assembly.

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Brother DCP 7020

blue line on printing
ANSWER : Replace the cyan toner cartridge.

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Brother DCP 7020

C1660w black printing light
ANSWER : Have someone fixed this? I have the same problem. Please help.

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Brother DCP 7020

Print and Copy
ANSWER : Alcohol has zero effect on ink. Ink is water soluble, so best thing to use is hot water.

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Brother DCP 7020