Color developing composition, lithographic printing plate precursor, method for producing lithographic printing plate, and color developing compound

1. A color developing composition comprising:

a compound represented by the following Formula (1),

wherein, in the Formula (1), R 1 represents a group in which an R 1 —O bond is cleaved by heat or exposure to infrared rays, the group represented by R 1 being a group represented by one of the following Formulae (1-1) to (1-7),

R 2 and R 3 each independently represent a hydrogen atom or an alkyl group, or R 2 and R 3 may be linked to each other to form a ring,

Ar 1 and Ar e each independently represent a group forming a benzene ring or a naphthalene ring,

Y 1 and Y 2 each independently represent an oxygen atom, a sulfur atom, —NR 0 —, or a dialkyl methylene group,

R 4 and R 5 each independently represent an alkyl group or a group represented by one of the following Formulae (2) to (4),

R 6 to R 9 each independently represent a hydrogen atom or an alkyl group,

R 0 represents a hydrogen atom, an alkyl group, or an aryl group, and

Za represents a counter ion for neutralizing a charge;

provided that the compound represented by the Formula (1) has at least one of groups represented by the Formulae (2) to (4) as R 4 or R 5 , or in Ar 1 or Ar 2 ,

in the Formulae (2) to (4), R 10 represents an alkylene group having 2 to 6 carbon atoms, W represents a single bond or an oxygen atom, n1 represents an integer of 1 to 45, R 11 represents an alkyl group having 1 to 12 carbon atoms or —C(═O)—R 14 , R 14 represents an alkyl group having 1 to 12 carbon atoms, R 12 and R 13 each independently represent a single bond or an alkylene group having 1 to 12 carbon atoms, and M represents a hydrogen atom, a Na atom, a K atom, or an onium group,

wherein in the Formulae (1-1) to (1-7), • represents a bonding site with the O atom in the Formula (1), R 20 's each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, —OR 24 , —NR 25 R 26 , or —SR 27 , R 21 's each independently represent a hydrogen atom, an alkyl group, or an aryl group, R 22 represents —OR 24 , —NR 25 R 26 , —SR 27 , —C(═O)R 28 , —OC(═O)R 28 , or a halogen atom, R 23 represents an alkenyl group, an alkoxy group, or an onium group, R 24 to R 27 each independently represent a hydrogen atom, an alkyl group, or an aryl group, R 28 represents an alkyl group, an aryl group, —OR 24 , —NR 25 R 26 , or —SR 27 , and Z 1 represents a counter ion for neutralizing a charge.

2. The color developing composition according to claim 1 ,

wherein R 1 in the Formula (1) is a group represented by the following Formula (5),

in the Formula (5), R 15 and R 16 each independently represent a hydrogen atom, an alkyl group, or an aryl group, E represents an onium group, and * represents a bonding site.

3. The color developing composition according to claim 2 ,

wherein E in the Formula (5) is a pyridinium group represented by the following Formula (6),

in the Fonnula (6), R 17 represents a halogen atom, an alkyl group, an aryl group, a hydroxy group, or an alkoxy group; in a case in which a plurality of R 17 's is present, the plurality of R 17 's may be identical to or different from each other or the plurality of R 17 's may be linked to each other to form a ring, n2 represents an integer of 0 to 4, R 18 represents an alkyl group, an aryl group, or a group represented by any of Formulae (2) to (4), and Z b represents a counter ion for neutralizing a charge.

4. The color developing composition according to claim 1 ,

wherein Ar 1 or Ar 2 in the Formula (1) is a group forming a group represented by the following Formula (7),

in the Formula (7), R 19 represents an alkyl group having 1 to 12 carbon atoms or a group represented by any of the Formulae (2) to (4), n3 represents an integer of 1 to 4, and * represents a bonding site.

5. The color developing composition according to claim 1 ,

wherein the compound represented by the Formula (1) has at least one group represented by the Formula (2) as R 4 or R 5 , or in Ar 1 or Ar 2 .

6. The color developing composition according to claim 1 ,

wherein R 4 and R 5 in the Formula (1) are the group represented by the Formula (2).

7. The color developing composition according to claim 1 , further comprising:

a binder polymer.

8. The color developing composition according to claim 1 , further comprising:

a polymerizable compound.

9. The color developing composition according to claim 1 , further comprising:

a polymerization initiator.

10. The color developing composition according to claim 1 , further comprising:

an acid color developer.

11. The color developing composition according to claim 10 ,

wherein the acid color developer is at least one compound selected from the group consisting of a spiropyran compound, a spirooxazine compound, a spirolactone compound, and a spirolactam compound.

12. A lithographic printing plate precursor comprising:

an image-recording layer containing the color developing composition according to claim 1 , on a support.

13. The lithographic printing plate precursor according to claim 12 , further comprising:

a protective layer on the image-recording layer.

14. A method for producing, a lithographic printing plate comprising:

exposing the lithographic printing plate precursor according to claim 12 in an image pattern; and

removing a non-exposed portion in the image-recording layer using at least one of printing ink or dampening water on a printer.

15. A color developing compound represented by the following Formula (1),

wherein, in the Formula (1), R 1 represents a group in which an R 1 —O bond is cleaved by heat or exposure to infrared rays, the group represented by R 1 being a group represented by one of the following Formulae (1-1) to (1-7),

R 2 and R 3 each independently represent a hydrogen atom or an alkyl group, or R 2 and R 3 may be linked to each other to form a ring,

Ar 1 and Ar 2 each independently represent a group forming a benzene ring or a naphthalene ring,

Y 1 and Y 2 each independently represent an oxygen atom, a sulfur atom, —NR 0 —, or a dialkyl methylene group,

R 4 and R 5 each independently represent an alkyl group or a group represented by one of the following Formulae (2) to (4),

R 6 to R 9 each independently represent a hydrogen atom or an alkyl group,

R 0 represents a hydrogen atom, an alkyl group, or an aryl group, and

Za represents a counter ion for neutralizing a charge;

provided that the compound represented by the Formula (1) has at least one of groups represented by the Formulae (2) to (4) as R 4 or R 5 , or in Ar 1 or Ar 2 ,

in the Formulae (2) to (4), R 10 represents an alkylene group having 2 to 6 carbon atoms, W represents a single bond or an oxygen atom, n1 represents an integer of 1 to 45, R 11 represents an alkyl group baying 1 to 12 carbon atoms or —C(═O)—R 14 , R 14 represents an alkyl group having 1 to 12 carbon atoms, R 12 and R 13 each independently represent a single bond or an alkylene group having 1 to 12 carbon atoms, and M represents a hydrogen atom, a Na atom, a K atom, or an onium group,

wherein in the Formulae (1-1) to (1-7), • represents a bonding site with the O atom in the Formula (1), R 20 's each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, —OR 24 , —NR 25 R 26 , or —SR 27 , R 21 's each independently represent a hydrogen atom, an alkyl group, or an aryl group, R 22 represents —OR 24 , —NR 25 R 26 , —SR 27 , —C(═O)R 28 , —OC(═O)R 28 , or a halogen atom, R 23 represents an alkenyl group, an alkoxy group, or an onium group, R 24 to R 27 each independently represent a hydrogen atom, an alkyl group, or an aryl group, R 28 represents an alkyl group, an aryl group, —OR 24 , —NR 25 R 26 , or —SR 27 , and Z 1 represents a counter ion for neutralizing a charge.