| abstract |
The present invention relates to a laminate film including a resin layer having a thickness of from 10 μm to 125 μm; and a toner layer formed on one surface of the resin layer, in which the resin layer is formed from a resin material having a glass transition temperature of 130° C. or higher, the toner layer has a plurality of voids, and when a value defined by the following formula (S1) using the void area ratio, which represents the ratio of the area of exposed voids, for the respective faces of the surface of the toner layer and a cross section of the toner layer, is designated as porosity, and when two void area ratios respectively corresponding to the cross sections of the toner layer in two orthogonally intersecting directions are used as the void area ratios of the cross sections of the toner layer, the porosities respectively calculated according to the two void area ratios are both from 0.01% to 0.40%. n n n n n n n n n Porosity n n n n n n n ( n % n ) n n n = n n n n Void n n n n n n area n n n n n n ratio n n n n n n of n n n n n n cross n n n n n n section n n n n n n n ( n % n ) n n n 100 n n × n n n Void n n n n n n area n n n n n n n n n n n n ratio n n n n n n of n n n n n n surface n n n n n n n ( n % n ) n n n 100 n n × n 100 n n n n n n ( n S1 n ) |