Patent ID: 6830709
Filing Date: 2004-12-14
Classification: C09D

Abstract:
A liquid composition which forms a colored portion on a recording medium together with an ink containing a coloring material, comprising a solvent and fine particles that react with the coloring material in the ink, the fine particles forming agglomerates having pores by the following pretreatment steps (a) to (c), wherein the agglomerates have pores and the volume of the pores whose radius ranges from 3 to 30 nm is not less than 0.4 ml/g, and the volume of the pores whose radius is more than 30 nm is not more than 0.1 ml/g, the volume and radius of the pores being measured according to a process for measuring a liquid composition comprising the steps of:i) subjecting a liquid composition containing fine particles and a solvent to the following pretreatment steps (a) to (c): (a) evaporating the solvent of the liquid composition at 120Â° C. for 10 hours in atmosphere, and drying the liquid composition; (b) burning the dried liquid composition resulting from the pretreatment step (a) at 700Â° C. for three hours after raising the temperature from 120Â° C. to 700Â° C. over one hour; (c) gradually cooling a burned product resulting from the pretreatment step (b) to room temperature, and powdering the burned product to obtain agglomerates of the fine particles; and ii) vacuum degassing the agglomerates at 120Â° C. for 8 hours, and measuring physical properties of pores of the agglomerates by a nitrogen adsorption and desorption method.