Patent ID: 6203956
Filing Date: 2001-03-20
Classification: G03G

Abstract:
A toner comprising a crosslinked binder resin and a colorant, the toner satisfies the following properties (a) to (e):(a) a melting point is in the temperature range of about 45 to 110.degree. C.;(b) at an angular frequency of 1 rad/sec and 30.degree. C., a storage elastic modulus (G'30) is at least 1.times.10.sup.5 Pa and a loss elastic modulus (G""30) is at least 1.times.10.sup.5 Pa;(c) the values of the storage elastic modulus (G') and the loss elastic modulus (G"") are changed 10.sup.2 or more within a temperature range of about 10.degree. C. when the temperature is varied;(d) when the storage elastic modulus at a temperature of melting point plus 20.degree. C. is represented by G' (Tm+20) and the storage elastic modulus at a temperature of melting point plus 50.degree. C. is represented by G' (Tm+50), the condition of the following formula (1) is satisfied.vertline.logG'(Tm+20)-logG'(Tm+50).vertline..ltoreq.1.5 (1); and(e) when the loss elastic modulus at a temperature of melting point plus 20.degree. C. is represented by G"" (Tm+20) and the loss elastic modulus at a temperature of melting point plus 50.degree. C. is represented by G"" (Tm+50), the condition of the following formula (2) is satisfied.vertline.logG""(Tm+20)-logG""(Tm+50).vertline..ltoreq.1.5 (2).