| 摘要 |
A recording medium includes an ink-receiving layer on a substrate, in which the ink-receiving layer contains hydrated alumina, a C 1-4 alkylsulfonic acid, and a salt of a compound of general formula (1) : X 1 -R 1 -(S) n -R 2 -X 2 , wherein n represents 1 or 2; X 1 and X 2 each independently represent H, NH 2 , or COOH, and at least one of X 1 and X 2 represents NH 2 or COOH; R 1 and R 2 each independently represent alkylene, arylene, or heteroarylene, and they may be bonded to each other to form a ring, upon letting the proportion of the C 1-4 alkylsulfonic acid be A percent by mass with respect to hydrated alumina, A is in the range of 1.0 to 2.0, and upon letting the proportion of the salt of the compound of general formula (1) be B percent by mass with respect to hydrated alumina, B is in the range of 0.5 to 5.0. |
