| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a nonmagnetic one-component developing toner having such superior durability as to enable long-time continuous printing, also having both anti-offsetting property and fixability in a wide temperature range and giving a fixed image excellent in wear and peeling resistances. SOLUTION: In the nonmagnetic one-component developing toner containing at least a polyester resin and a colorant, the amount of a THF (tetrahydrofuran)-insoluble component is >=5 wt.%, the outflow starting temperature Tfb of the toner measured with a constant-load extrusion type capillary rheometer is 100-115 deg.C and the melting temperature T1/2 measured by the 1/2 method is 135-150 deg.C.</p> |
