Abstract: A toner is made or toner particles which contains a binder resin and a coloring agent, wherein the toner particles have a weight-average particle size in a range of 6.0 to 11.5 &mgr;m, and contains toner particles (a) with a particle diameter of 5 &mgr;m or less in a content ratio of 1 to 15% by number, and toner particles (b) with a particle diameter of twice or more the weight-average particle size in a content ratio of 5 wt % or less, and the number-average particle size D25 and the number-average particle size D75 respectively obtained when the cumulative number of the toner particles reaches 25% and 75% at the measurement of a cumulative toner particle distribution by number thereof are in the relationship of 0.60≦D25/D75≦0.95. A two-component developer includes the above-mentioned toner and a carrier.

Abstract: A toner for dry developing, containing a colorant and a binder and giving such a toner image on a transfer sheet upon fixation that has an image density I and a gross of G % when the toner deposits on the transfer sheet in an amount of M mg/cm.sup.2, wherein I, G and M have the following relationship:I=a.multidot.M+bwhere 0<a.ltoreq.3 and 0.ltoreq.b,G=.alpha..multidot.M+.beta.where 0<.alpha.<15 and 0.ltoreq..beta., andG.sub.AV .gtoreq.10where G.sub.AV is an average of G when M=0.2, 0.4, 0.6, 0.8 and 1 mg/cm.sup.2.