Recording medium and method for manufacturing recording medium

1. A recording medium comprising a substrate and a recording layer on the substrate,

wherein the recording layer contains a water-soluble binder, a cross-linking agent that can cross-link the water-soluble binder, fine particles and a compound shown by the following Formula (I):

(Y 1 ) n —Z 1 —(X) l —Z 2 —(Y 2 ) m   Formula (I)

wherein, in Formula (I): each of Z 1 and Z 2 indicates a substituted or unsubstituted aromatic ring which may have a hetero atom; X indicates —O—, —S—, —S—S—, or —C(R) 2 —; R indicates an alkyl group or a hydrogen atom; each of Y 1 and Y 2 indicates a sulfo group, a carboxyl group, a phosphono group, a carbonamide group, a sulfonamide group, or a quaternary ammonium salt; l indicates 0 or 1; and each of m and n indicates 0 or an integer of 1 or more, and at least one of m and n is an integer of 1 or more, and

wherein the recording medium is for use in a recording medium for ink jet recording.

2. The recording medium according to claim 1 , wherein each of the aromatic rings shown by Z 1 and Z 2 in Formula (I) is selected from a benzene ring, a pyridine ring, a pyrimidine ring, and a quinoline ring.

3. The recording medium according to claim 1 , wherein each of Y 1 and Y 2 in Formula (I) is selected from substituted and unsubstituted sulfo groups and substituted and unsubstituted carboxyl groups.

4. The recording medium according to claim 1 , wherein the water-soluble binder is at least one kind selected from polyvinyl alcohol resin, cellulose resin, resin having an ether bond, resin having a carbamoyl group, resin having a carboxyl group, and gelatin.

5. The recording medium according to claim 4 , wherein the water-soluble binder is a polyvinyl alcohol resin.

6. The recording medium according to claim 1 , wherein the fine particles are at least one kind selected from silica fine particles, colloidal silica, alumina fine particles, and pseudoboebmite.

7. The recording medium according to claim 1 , wherein the recording layer further contains a mordant.

8. The recording medium according to claim 1 , wherein the recording layer further contains a compound having at least two kinds of multivalent metallic atoms in a molecule.

9. The recording medium according to claim 8 , wherein the compound having at least two kinds of multivalent metallic atoms in a molecule is a composite compound containing zirconium and aluminum.

10. A method for manufacturing the recording medium according to claim 1 , comprising: applying a coating liquid containing fine particles and a water-soluble binder to form a coated layer, and applying a basic solution having pH of 7.1 or more to the coated layer to cross-link and harden the coated layer to form a recording layer, wherein at least one of the coating liquid and the basic solution contains a cross-linking agent, and the applying basic solution to the coated layer is conducted at the same time as the formation of the coated layer, or at a time when the coated layer is drying and before the coated layer exhibits falling-rate drying.

11. The recording medium according to claim 1 , wherein the fine particle is Vapor phase process silica.

12. The recording medium according to claim 1 , wherein the cross-linking agent is a boron compound.

13. The recording medium according to claim 1 , wherein an ink receiving layer is produced by a wet-on-wet method when the recording layer is the ink receiving layer in ink jet recording.