Varied reaction condition parameters of the carbonation process provide various particle diameters and shapes of the calcium carbonate products. Those calcium carbonates are potential to replace silica and alumina used for commercial ink-jet paper. Ultra-fine particles of calcium carbonate were so synthesized in the aim of improved print quality that could not be attained by conventional types of calcium carbonate. Nevertheless, the ultra-fine particles tended to provide smaller pore size and thus low rate of liquid absorption to the coat layer of paper. Therefore, the surface properties were altered for enhancing ink absorption rate and improved printability. Trial ink-jet paper prepared from the novel calcium carbonate with modified surfaces was evaluated in terms of print quality and microscopic ink dot shape using confocal laser scanning microscope.