Ultraviolet crosslinking ink and inkjet recording method

1. An ultraviolet crosslinking ink comprising:

a radically polymerizable and anionically polymerizable monomer;

a photoradical generator; and

a photo-base generator,

wherein a content of the photoradical generator in the ultraviolet crosslinking ink is from 1% to 30% by weight based on a weight of the radically polymerizable and anionically polymerizable monomer components included in the ink, and

a content of the photo-base generator in the ultraviolet crosslinking ink is from 0.1% to 20% by weight based on the weight of the ink.

2. The ultraviolet crosslinking ink according to claim 1 further comprising:

a colorant.

3. The ultraviolet crosslinking ink according to claim 2 , wherein the colorant is a pigment.

4. The ultraviolet crosslinking ink according to claim 3 , wherein the pigment is C.I. Pigment Blue 15:3 or C.I. Pigment Blue 15:4.

5. An inkjet cording method comprising:

ejecting the ultraviolet cross linking ink according to claim 2 toward a surface of a recording material to form an ink image thereon, and

irradiating the ink image with ultraviolet light using a light emitting diode.

6. An inkjet recording method comprising:

coating the surface of a recording material with an ultraviolet crosslinking clear ink before forming an ink image thereon,

wherein the ultraviolet crosslinking clear ink includes:

a radically polymerizable and anionically polymerizable monomer;

a photoradical generator;

a photo-base generator; and

no colorant,

wherein a content of the photoradical generator in the ultraviolet crosslinking clear ink is from 1% to 30% by weight based on a weight of the radically polymerizable and anionically polymerizable monomer components included in the ink, and

a content of the photo-base generator in the ultraviolet crosslinking clear ink is from 0.1% to 20% by weight based on the weight of the ink.