Try this site, it has images of different types of printer issues, including vertical black lines.
http://www.printertechs.com/tech/print-defects/print-defects-index.php
It says it's usually a defective toner cartridge or a contaminated fuser entrance guide. It could also be a bad fuser, but apparently those are the most common issues.
The problem is probably caused by using the wrong driver for your printer. You should visit the printer's manufacture's website and download the latest drivers for that model printer.
A Bar code
It is the distance of a vertical and longitudinal planfrom the center line of the vessel
Barcode scanner.
1080 is the number of vertical scanning lines on the 1080i and 1080p High Definition Video modes.
A scratch on the laser printer drum can account for black lines showing up on printouts. Another culprit can be a dirty primary corona wire.
ink
Please specify the printer type weather it is laser , dot matrix or ink jet.
u can buy them at best buy.
The Graphics Card is broken.
Non-vertical lines could be slanted or horizontal.
Black vertical lines
They are simply just called lines.
No. Horizontal lines have zero slope. Vertical lines have infinite slope.
Vertical lines parallel to the prime meridian are lines of longitude.
7 horizontal lines and 10 vertical lines how many rectangles?
Replace the Drum Remove and shake the toner cartridge