Patent ID: 6514653
Filing Date: 2003-02-04
Classification: G03G

Abstract:
Dry toner particles comprising a toner resin, wherein:(i) said toner resin includes a mixture of two polymers A and B, said polymers A and B being chosen such that substantially no phase separation occurs in said mixture when in a molten state, resulting in a transmission density (Dm) for an extruded slab of a 50:50 mixture of both polymer A and polymer B with thickness 250 &mgr;m being between 0.3 and 0.7 higher than the sum of half the transmission density of a 250 &mgr;m extruded slab of polymer A alone (DA) and half the transmission density of a 250 &mgr;m extruded slab of polymer B alone (DB), (ii) said polymer A being a polyester and said polymer B being a polyester having a carbonyloxy group content of at least 7.5 mol/kg, (iii) said polymer A and B, included in said toner resin, are mixed in a weight ratio 5:1 to (iv) said mixture of said two polymers A and B makes up at least 25% by weight of said toner resin.