Question 1: What are the most common causes of a black-only print on an Epson L3110?

The most common causes of black-only print on an Epson L3110 are typically a clogged print head, a faulty cartridge, or a problem with the printer's internal sensors. A clogged print head can result in the printer not delivering ink properly, leading to black prints. A faulty cartridge may not be delivering the correct amount of ink, or it could be damaged. Finally, sensor issues can sometimes interfere with the printer's ability to recognize the color.