Patent ID: 7005223

Claim:
A toner composition comprising: toner particles comprising: a binder resin; and a colorant, and a charge controlling agent which is at least located on a surface of the toner particles, wherein the toner composition has a spherical degree of from 0.96 to 0.99, and wherein the toner composition satisfies the following relationship: 10 ≦M/T ≦1,000 wherein M represents a quantity of an element on a surface of the toner particles in units of % by weight, wherein the element is included only in the charge controlling agent, and is one of elements of second to fifth periodical elements in the long form periodic table other than carbon, oxygen and rare gas elements; and T represents a quantity of the element in the toner composition in units of % by weight, and the toner composition further satisfies the following relationship: 0.7≦( Q/M 1)/( Q/M 2)≦1.3 wherein Q/M1 represents a charge quantity of the toner composition in units of μC/g when the toner composition is mixed with a carrier coated with a silicone resin for 15 seconds and Q/M2 represents a charge quantity of the toner composition in units of μC/g when the toner composition is mixed with the carrier for 600 seconds.