Abstract: Provided is a method for creating a planographic printing plate the method comprising in this sequence a step for preparing a planographic printing original plate having an image recording layer on a hydrophilic support a step for exposing the planographic printing original plate in an image-like manner and a step for by using a developing liquid removing an unexposed part of the image recording layer exposed in the planographic printing original plate wherein: the developing liquid contains a compound having at least one carboxy group and at least one acid group selected from the group consisting of phosphate group phosphonate group and phosphinate group; the developing liquid has a pH of 5-10; and said method does not comprise after the removing step a step for washing the surface of the resultant planographic printing plate with water or a step for applying a desensitizing treatment to the surface of the resultant planographic printing plate.
1. A method for producing a lithographic printing plate comprising in order:
a step of preparing a lithographic printing plate precursor having an image-recording layer on a hydrophilic support;
a step of exposing the lithographic printing plate precursor in an image shape; and
a step of removing a non-exposed portion of the image-recording layer exposed in the lithographic printing plate precursor using a developer,
wherein the developer includes a compound having at least one acidic group selected from the group consisting of a phosphate group, a phosphonate group, and a phosphinate group and one or more carboxy groups,
a pH of the developer is 5 to 10, and
after the removal step, a step of washing a surface of an obtained lithographic printing plate with water and a step of desensitizing the surface of the obtained lithographic printing plate are not provided.
2. The method for producing a lithographic printing plate according to claim 1,
wherein the developer further includes an anionic surfactant and a nonionic surfactant.
3. The method for producing a lithographic printing plate according to claim 2,
wherein a mass ratio (the nonionic surfactant to the anionic surfactant) between a content of the nonionic surfactant and a content of the anionic surfactant in the developer is 1.2:1.Oto 5.0:1.0.
4. The method for producing a lithographic printing plate according to claim 2 or 3,
wherein a total content of the nonionic surfactant and the anionic surfactant in the developer is 2% by mass to 20% by mass of a total mass of the developer.
5. The method for producing a lithographic printing plate according to any one of claims 1 to
4,
wherein the image-recording layer contains an infrared-absorbing colorant, a polymerization initiator, a polymerizable compound, and a binder polymer.
6. The method for producing a lithographic printing plate according to any one of claims 1 to
4,
wherein the image-recording layer contains an infrared-absorbing colorant, a polymerization initiator, a polymerizable compound, and a particulate polymer compound.
7. The method for producing a lithographic printing plate according to any one of claims 1 to
4,
wherein the image-recording layer contains an infrared-absorbing colorant and a thermoplastic resin particle.
8. The method for producing a lithographic printing plate according to any one of claims 1 to
7,
wherein the number of carboxy groups in the compound having at least one acidic group selected from the group consisting of a phosphate group, a phosphonate group, and a phosphinate group and one or more carboxy groups is 2 or more and 10 or less.
9. The method for producing a lithographic printing plate according to any one of claims 1 to
8,
wherein a content of the compound having at least one acidic group selected from the group consisting of a phosphate group, a phosphonate group, and a phosphinate group and one or more carboxy groups is 0.1% by mass to 10% by mass of the total mass of the developer.
10. The method for producing a lithographic printing plate according to any one of claims 1
to 9,
wherein the developer does not include a water-soluble polymer compound or a content of the water-soluble polymer compound is more than 0% by mass and 0.05% by mass or less of the total mass of the developer.
| # | Name | Date |
|---|---|---|
| 1 | 201947032868.pdf | 2019-08-14 |
| 2 | 201947032868-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [14-08-2019(online)].pdf | 2019-08-14 |
| 3 | 201947032868-STATEMENT OF UNDERTAKING (FORM 3) [14-08-2019(online)].pdf | 2019-08-14 |
| 4 | 201947032868-REQUEST FOR EXAMINATION (FORM-18) [14-08-2019(online)].pdf | 2019-08-14 |
| 5 | 201947032868-PROOF OF RIGHT [14-08-2019(online)].pdf | 2019-08-14 |
| 6 | 201947032868-PRIORITY DOCUMENTS [14-08-2019(online)].pdf | 2019-08-14 |
| 7 | 201947032868-POWER OF AUTHORITY [14-08-2019(online)].pdf | 2019-08-14 |
| 8 | 201947032868-FORM 18 [14-08-2019(online)].pdf | 2019-08-14 |
| 9 | 201947032868-FORM 1 [14-08-2019(online)].pdf | 2019-08-14 |
| 10 | 201947032868-DRAWINGS [14-08-2019(online)].pdf | 2019-08-14 |
| 11 | 201947032868-DECLARATION OF INVENTORSHIP (FORM 5) [14-08-2019(online)].pdf | 2019-08-14 |
| 12 | 201947032868-COMPLETE SPECIFICATION [14-08-2019(online)].pdf | 2019-08-14 |
| 13 | 201947032868-CLAIMS UNDER RULE 1 (PROVISIO) OF RULE 20 [14-08-2019(online)].pdf | 2019-08-14 |
| 14 | Correspondence by Agent _Form 1_27-08-2019.pdf | 2019-08-27 |
| 15 | 201947032868-RELEVANT DOCUMENTS [06-09-2019(online)].pdf | 2019-09-06 |
| 16 | 201947032868-MARKED COPIES OF AMENDEMENTS [06-09-2019(online)].pdf | 2019-09-06 |
| 17 | 201947032868-FORM 13 [06-09-2019(online)].pdf | 2019-09-06 |
| 18 | 201947032868-Annexure [06-09-2019(online)].pdf | 2019-09-06 |
| 19 | 201947032868-AMMENDED DOCUMENTS [06-09-2019(online)].pdf | 2019-09-06 |
| 20 | 201947032868-FORM 3 [13-01-2020(online)].pdf | 2020-01-13 |
| 21 | 201947032868-PETITION UNDER RULE 137 [22-09-2021(online)].pdf | 2021-09-22 |
| 22 | 201947032868-OTHERS [23-09-2021(online)].pdf | 2021-09-23 |
| 23 | 201947032868-Information under section 8(2) [23-09-2021(online)].pdf | 2021-09-23 |
| 24 | 201947032868-FORM 3 [23-09-2021(online)].pdf | 2021-09-23 |
| 25 | 201947032868-FER_SER_REPLY [23-09-2021(online)].pdf | 2021-09-23 |
| 26 | 201947032868-CLAIMS [23-09-2021(online)].pdf | 2021-09-23 |
| 27 | 201947032868-Annexure [23-09-2021(online)].pdf | 2021-09-23 |
| 28 | 201947032868-ABSTRACT [23-09-2021(online)].pdf | 2021-09-23 |
| 29 | 201947032868-FER.pdf | 2021-10-18 |
| 30 | 201947032868-PatentCertificate27-10-2021.pdf | 2021-10-27 |
| 31 | 201947032868-IntimationOfGrant27-10-2021.pdf | 2021-10-27 |
| 32 | 201947032868-RELEVANT DOCUMENTS [16-09-2023(online)].pdf | 2023-09-16 |
| 1 | SearchStrategy201947032868E_22-03-2021.pdf |