1. A lithographic printing plate precursor comprising:
a support;
an image recording layer; and an overcoat layer in this order,
wherein the image recording layer includes an infrared absorbent, a polymerizable compound, a polymerization initiator, and a polymer compound having a particle shape, the overcoat layer includes a water-soluble polymer and particles, a melting point of the particles is in a range of 70°C to 150°C, and a volume average particle diameter of the particles is greater than 0.7 urn.
2. The lithographic printing plate precursor according to claim 1,
wherein the overcoat layer contains 10,000 particles/mm2 or greater of the particles having a particle diameter of greater than 0.7 urn.
3. The lithographic printing plate precursor according to claim 1 or 2,
wherein a surface of an outermost layer on the image recording layer side in the lithographic printing plate precursor is formed of the particles in the overcoat layer and the water-soluble polymer.
4. The lithographic printing plate precursor according to any one of claims 1 to 3,
wherein an area ratio occupied by the particles in the overcoat layer in a surface of an
outermost layer on the image recording layer side in the lithographic printing plate precursor is 20% or less.
5. The lithographic printing plate precursor according to any one of claims 1 to 4,
wherein an average film thickness of a portion free from the particles in the overcoat
layer is smaller than the volume average particle diameter of the particles in the overcoat layer.
6. The lithographic printing plate precursor according to any one of claims 1 to 5,
wherein a value of the volume average particle diameter of the particles/an average
film thickness of a portion free from the particles in the overcoat layer is 10 or greater.

7. The lithographic printing plate precursor according to any one of claims 1 to 6, wherein the particles in the overcoat layer are organic resin particles.
8. The lithographic printing plate precursor according to any one of claims 1 to 7, wherein the particles in the overcoat layer contain at least one particle selected from
the group consisting of polyethylene particles and modified polyethylene particles.
9. The lithographic printing plate precursor according to any one of claims 1 to 8,
wherein the water-soluble polymer includes a cellulose compound.
10. The lithographic printing plate precursor according to any one of claims 1 to 9, which is an on-press development type lithographic printing plate precursor.
11. A method of producing a lithographic printing plate, comprising:
a step of image-wise exposing the lithographic printing plate precursor according to any one of claims 1 to 10 to form an exposed area and an unexposed area; and
a step of supplying at least one of printing ink or dampening water to remove a non-image area.
12. A method of producing a lithographic printing plate comprising:
an exposure step of image-wise exposing the lithographic printing plate precursor according to any one of claims 1 to 9 to form an exposed area and an unexposed area; and
a development step of supplying a developer having a pH of 2 or higher and 11 or lower to remove the unexposed area.