Method of Quantifying Coverage of Extra Particulate Additives on the Surface of Toner Particles

摘要

A method of quantifying the coverage of extra particulate additives (EPA) on the surface of toner particles is provided. More specifically, this invention is a method using automated image analysis to correctly identify toner and coverage of EPA particles on the surface of the toner.

主权项

1. A method of determining a percentage coverage of extra particulate additives on surfaces of toner particles, comprising:
receiving an image of the toner particles; determining a first area corresponding to a first brightness threshold; determining at least one other area corresponding to a second brightness threshold; and determining a ratio of the first area to the at least one other area, the ratio corresponding to the relative amount of extra particulate additives on surfaces of toner particles, wherein at least one of the receiving, the determining the first area, the determining the second area, and the determining the ratio is performed automatically.