How to Identify and Fix Common Problems ?
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When your printer leaves black lines, the lines indicate that there are excess toner powders on the rollers or transfer belt within the printer. As the paper is moved along by the rollers and transfer belt, any excess powder left on them can result in lines being left on the paper.
The streaks or lines might be caused due to low ink levels in one or both ink cartridges. Check the ink levels using the HP Toolbox to determine if the ink cartridges are low on ink and need to be replaced. note: Ink level warnings and indicators provide estimates for planning purposes only.
If there is a line, the print cartridge is most likely your culprit. Replace the defective print cartridge with a new one. Place the print cartridge back in the machine. Print a test document to see if issue is resolved.
If your laser printer is causing horizontal black lines you either have a problem with the optics or the drum. Cleaning the optics and replacing the drum should fix the problem in most cases.
A thick black vertical line(s) that appear on the faxes you send, the images you scan into the computer and copies you make usually indicates a problem with the scanner unit and the machine will require service.
Vertical lines in prints are an early warning sign of a low ink cartridge, which may show up before the printer`s low ink alerts start. You can fix the problem by replacing the low cartridge. Gently shaking the drained cartridge a bit may help to get another few prints out of it without vertical lines.
Banding can occur if you use inkjet media that isn`t compatible with your printer and ink. Other possible causes of banding include: (1) using the incorrect media settings in the print software; (2) misaligned printheads; and (3) clogged nozzles in the printhead.
Run the Alignment Tool Your printer could be printing blurry text due to a misaligned print head. You can give this a check by running the printer`s integrated alignment tool. This tool should be accessible via the printer`s system settings, either on the printer itself or via the printer`s driver software.
A vertical line is a line extending up and down. On a table (like the one shown to the right), the legs of the table are vertical lines. The y-axis is an example of a vertical line.
Dots are typically caused by foreign material inside the machine (for example, paper dust, glue from labels or envelopes, paper clips, staples) sticking to or damaging the surface of the drum. Toner builds up on or sticks to these areas on the drum and creates black dots on the printed pages.
Vertical Streaks or Lines
Vertical white lines also can signal an obstruction that prevents the laser from imaging pages correctly. Resolving that problem can require cleaning elements of the laser assembly or replacing it altogether.
Dots are typically caused by foreign material inside the machine (for example, paper dust, glue from labels or envelopes, paper clips, staples) sticking to or damaging the surface of the drum. Toner builds up on or sticks to these areas on the drum and creates black dots on the printed pages.
HP has determined that 99% of all lines and streaks on copies made by feeding the original documents through the ADF are caused by debris on the ADF glass. Debris can include dust, paper or toner dust, residue from sticky note adhesive, correction fluid or tape, ink, fingerprints, and more.
Why Does My Computer Monitor Have Vertical Lines? Vertical lines on a monitor are one of three core problems: the display panel itself is defective, the connection between your computer and the display is faulty, or it`s receiving erroneous information.