Previously on “How to Detect and Fix Problems with Laser Monochrome Printing” we examined toner cartridge components and reviewed several possible reasons of printing problems. Today we shall pick up from where we left last time. 3. Magnetic Roller This roller in HP printer is a metal cylinder covered with special coating with a magnetized bar inside. This part rarely gets out of… Continue reading How to Detect and Fix Problems with Laser Monochrome Printing. Part 3