WATER-BASED INK FOR INKJET RECORDING, INK CARTRIDGE, INKJET RECORDING APPARATUS, METHOD FOR EVALUATING WATER-BASED INK FOR INKJET RECORDING, AND METHOD FOR PRODUCING WATER-BASED INK FOR INKJET RECORDING

摘要

PROBLEM TO BE SOLVED: To provide water-based ink for inkjet recording enabling effective inkjet recording hardly accompanied with delayed shooting of the ink even without a flushing operation.;SOLUTION: The water-based ink for inkjet recording includes a coloring agent, water, and a water-soluble organic solvent. In the water-based ink after drying, tan at frequency of 100 (1/sec) measured at 25C represented by the following equation (1): tan=G"/G' is 4 or more. In the equation (1), tan is loss tangent, G' is storage elastic modulus, and G" is loss elastic modulus.;COPYRIGHT: (C)2010,JPO&INPIT