公开(公告)号：US20230039348A1

公开(公告)日：2023-02-09

申请号：US17893804

申请日：2022-08-23

Applicant: FUJIFILM Corporation

Inventor： Akira SAKAGUCHI ,  Keisuke NOGOSHI

IPC: B41N1/14 ,  G03F7/11 ,  G03F7/029

Abstract: Provided is a lithographic printing plate precursor having a support, an image-recording layer, and an overcoat layer in this order, in which the image-recording layer contains a polymerization initiator, a polymerizable compound, and particles, and the overcoat layer contains a discoloring compound. Also provided is a method of preparing a lithographic printing plate or a lithographic printing method that uses the lithographic printing plate precursor.

公开(公告)号：US20230400771A1

公开(公告)日：2023-12-14

申请号：US18359391

申请日：2023-07-26

Applicant: FUJIFILM Corporation

Inventor： Kazuaki ENOMOTO ,  Yusuke NAMBA ,  Keisuke NOGOSHI

IPC: G03F7/11 ,  B41C1/10 ,  B41F5/00 ,  G03F7/029

CPC classification number: G03F7/11 ,  B41C1/1075 ,  B41F5/00 ,  G03F7/029

Abstract: Provided are: an on-press development type planographic printing plate precursor having a support, an image-recording layer, and an overcoat layer in this order, in which a content of an inorganic compound in the overcoat layer is zero or is more than 0% by mass or less than 1% by mass with respect to a total mass of the overcoat layer, and the image-recording layer contains an infrared absorber, a polymerization initiator, a polymerizable compound, and an oil agent; and a method of preparing a planographic printing plate and a planographic printing method in which the on-press development type planographic printing plate precursor is used.

公开(公告)号：US20230127702A1

公开(公告)日：2023-04-27

申请号：US18059256

申请日：2022-11-28

Applicant: FUJIFILM Corporation

Inventor： Kazuaki ENOMOTO ,  Akira YAMAMOTO ,  Yusuke NAMBA ,  Keisuke NOGOSHI

IPC: B41C1/10 ,  G03F7/031 ,  G03F7/029 ,  G03F7/033 ,  G03F7/004

Abstract: Provided is an on-press development type lithographic printing plate precursor having a support, an image-recording layer, and an outermost layer in this order, in which the image-recording layer contains an infrared absorber, an electron-accepting polymerization initiator, and a polymerizable compound, LUMO of the electron-accepting polymerization initiator-LUMO of the infrared absorber is 0.45 eV or more, and the outermost layer contains a discoloring compound. Also provided is a method of preparing a lithographic printing plate and a lithographic printing method in which the on-press development type lithographic printing plate precursor is used.

公开(公告)号：US20180356730A1

公开(公告)日：2018-12-13

申请号：US16104638

申请日：2018-08-17

Applicant: FUJIFILM Corporation

Inventor： Takeshi INASAKI ,  Keisuke NOGOSHI ,  Hiroaki IDEI ,  Akio MIZUNO

IPC: G03F7/105 ,  B41N1/14 ,  B41C1/10 ,  G03F7/004 ,  G03F7/20 ,  G03F7/26 ,  G03F7/16 ,  G03F7/033 ,  G03F7/029 ,  C09B23/01 ,  C09B11/24

CPC classification number: G03F7/105 ,  B41C1/10 ,  B41C1/1008 ,  B41C2201/02 ,  B41N1/14 ,  C09B11/24 ,  C09B23/0008 ,  C09B23/0025 ,  C09B23/0066 ,  G03F7/0045 ,  G03F7/027 ,  G03F7/0295 ,  G03F7/033 ,  G03F7/16 ,  G03F7/168 ,  G03F7/2004 ,  G03F7/2006 ,  G03F7/26

Abstract: A color developing composition containing a compound represented by the Formula (1) as defined herein, a lithographic printing plate precursor including a support and an image-recording layer containing the color developing composition, a method for producing a lithographic printing plate including: exposing the lithographic printing plate precursor 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, and a color developing compound represented by the Formula (1) as defined herein.

公开(公告)号：US20170123315A1

公开(公告)日：2017-05-04

申请号：US15407254

申请日：2017-01-17

Applicant: FUJIFILM CORPORATION

Inventor： Akio MIZUNO ,  Keisuke NOGOSHI ,  Kyosuke TSUMURA ,  Taira MURAKAMI ,  Kohei AIZU

IPC: G03F7/004 ,  G03F7/16 ,  B41M5/333 ,  G03F7/26 ,  C09B23/16 ,  B41C1/10 ,  G03F7/11 ,  G03F7/20

CPC classification number: G03F7/0045 ,  B41C1/1016 ,  B41C2201/02 ,  B41C2201/12 ,  B41C2210/04 ,  B41C2210/08 ,  B41M5/286 ,  B41M5/333 ,  B41M5/3333 ,  C09B23/00 ,  C09B23/0025 ,  C09B23/0066 ,  C09B23/086 ,  C09B23/164 ,  G03F7/11 ,  G03F7/16 ,  G03F7/168 ,  G03F7/20 ,  G03F7/26

Abstract: An object of the present invention is to provide a color developing composition which develops colors in a high density and does not significantly discolor when aged, a lithographic printing plate precursor which has excellent plate-inspecting properties by means of color development and is capable of maintaining strong color development even when aged after color development, a plate making method for a lithographic printing plate in which the lithographic printing plate precursor is used, and a new compound that can be preferably used as a color developer.The color developing composition of the present invention includes a compound represented by Formula 1. The compound in the present invention is represented by Formula 1. In Formula 1, R1 represents a group in which an R1—O bond is cleaved by heat or exposure to infrared rays.

公开(公告)号：US20230219336A1

公开(公告)日：2023-07-13

申请号：US18059304

申请日：2022-11-28

Applicant: FUJIFILM Corporation

Inventor： Kazuaki ENOMOTO ,  Akira YAMAMOTO ,  Yusuke NAMBA ,  Keisuke NOGOSHI

IPC: B41C1/10

CPC classification number: B41C1/1016 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/02 ,  B41C2210/22 ,  B41C2210/24

Abstract: Provided is an on-press development type lithographic printing plate precursor having a support, an image-recording layer, and an outermost layer in this order, in which the image-recording layer contains an infrared absorber, an electron-donating polymerization initiator, and a polymerizable compound, HOMO of the infrared absorber - HOMO of the electron-donating polymerization initiator is 0.60 eV or less, and the outermost layer contains a discoloring compound. Also provided are a method of preparing a lithographic printing plate and a lithographic printing method in which the on-press development type lithographic printing plate precursor is used.

公开(公告)号：US20220113629A1

公开(公告)日：2022-04-14

申请号：US17558779

申请日：2021-12-22

Applicant: FUJIFILM Corporation

Inventor： Keisuke NOGOSHI

IPC: G03F7/20 ,  G03F7/004

Abstract: Provided is an on-press development type lithographic printing plate precursor having an aluminum support and an image-recording layer on the aluminum support, in which the image-recording layer contains an infrared-absorbing polymethine colorant having HOMO of −5.2 eV or less, a polymerization initiator, and a polymerizable compound having 7 or more functional groups and contains or does not contain a polymer having a molecular weight 10,000 or more, and in a case where the image-recording layer contains the polymer having a molecular weight of 10,000 or more, a ratio Wp/Wm of a content Wp of the polymer having a molecular weight of 10,000 or more to a content Wm of the polymerizable compound having 7 or more functional groups is 1.00 or less. Also provided are a method for preparing a lithographic printing plate and a lithographic printing method using the lithographic printing plate precursor.

公开(公告)号：US20200166839A1

公开(公告)日：2020-05-28

申请号：US16695208

申请日：2019-11-26

Applicant: FUJIFILM Corporation

Inventor： Shuji HIRANO ,  Kazuaki ENOMOTO ,  Keisuke NOGOSHI

IPC: G03F7/038 ,  G03F7/11 ,  C08F220/28 ,  C08F220/60 ,  B41C1/10

Abstract: Provided are a lithographic printing plate precursor having an image-recording layer on a hydrophilic support, in which the image-recording layer includes a. polymer having a constituent unit derived from a monomer having a solubility parameter of 20 MPa1/2 or more, an infrared absorber, and a polymer particle; a resin composition for producing a lithographic printing plate precursor including the polymer, an infrared absorber, and a polymer particle; and a method for producing a lithographic printing plate in which the lithographic printing plate precursor is used.