Fujifilm Corporation

Ichiro Koyama

Shota Suzuki

Noriaki Sato

Yu Iwai

Atsushi Nakamura

Yoshitaka Kamochi

Kazuhiro Fujimaki

Tsutomu Umebayashi

Yasuhiro Sawamura

Mitsuru Sawano

Akinori Fujita

Yusuke Namba

Akira Sakaguchi

Akira Yamamoto

Kazuyoshi Mizutani

Akinori Shibuya

Yoshinori Taguchi

Hidekazu Oohashi

Natsumi Yokokawa

Kazuaki Enomoto

Junya Abe

Shiro Tan

Takafumi Nakayama

Takeshi Kawabata

Masafumi Yoshida

Takanori Mori

Mayuko Kanehisa

An on-machine development type planographic printing plate precursor has a support and an image-recording layer on the support. The image-recording layer contains an initiator, an infrared absorber capable of donating electrons to the initiator, and a color-developing substance precursor. The image-recording layer can form an image by exposure to infrared laser, and in a case where the image-recording layer is exposed to an infrared laser with a wavelength of 830 nm at an energy density of 110 mJ/cm, a brightness change ΔL of the image-recording layer before and after the exposure is 3.0 or more. A method for preparing a planographic printing plate and a planographic printing method employ the on-machine development type planographic printing plate precursor.

On-machine development type planographic printing plate precursor, method for preparing planographic printing plate, and planographic printing method

An on-press development type lithographic printing plate precursor having a support and an image-recording layer on the support, in which the image-recording layer contains an infrared absorber, a polymerization initiator, a polymerizable compound, and a color-developing substance precursor, and in a case where the image-recording layer is exposed to an infrared laser having a wavelength of 830 nm at an energy density of 110 mJ/cm, a loss of ethylenically unsaturated bonds in an exposed area in the image-recording layer is 10% to 40% of ethylenically unsaturated bonds in a non-exposed area in the image-recording layer, and a method for preparing a lithographic printing plate or a lithographic printing method using the on-press development type lithographic printing plate precursor.

On-press development type lithographic printing plate precursor, method for preparing lithographic printing plate, and lithographic printing method

A photo-curable ink composition is provided, the composition including: a polymer including a structural unit represented by General Formula 1 below; and a radical-polymerizable monomer, in which a total content of a monofunctional radical-polymerizable monomer and a bifunctional radical-polymerizable monomer is 50% by mass or more with respect to a total amount of the composition: in which, in General Formula 1: Rrepresents a hydrogen atom or a methyl group; X represents an oxygen atom or &#x2014;NR&#x2014;, Rrepresenting a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; Y represents a group including at least one selected from the group consisting of a thioether structure, a phosphorus atom, and a hindered phenol structure; and * represents a bonding site.

Photo-curable ink composition and method for forming image

Provided are an ink composition including water, particles including a polymer having at least one selected from the group consisting of a urethane group and a urea group, and a gelling agent having a hydrogen-bonding group; a method for producing the ink composition; and an image-forming method.

Ink composition, method for producing the same, and image-forming method

An ink composition contains: water; and a particle including a photopolymerizable monomer and a polymer having a blocked isocyanate group having an unblocking temperature of 150&#xb0; C. or less.

Provided are a photocurable ink composition including a resin which contains an amino group having one or more hydrogen atoms on a carbon atom at an &#x3b1;-position and having an amine value of 3.5 mmol/g to 12 mmol/g, and a radically polymerizable monomer, in which the radically polymerizable monomer contains at least one of a monofunctional radically polymerizable monomer or a bifunctional radically polymerizable monomer, a total content of the monofunctional radically polymerizable monomer and the bifunctional radically polymerizable monomer is 50% by mass or greater with respect to a total mass of the photocurable ink composition, and a content of a radically polymerizable monomer containing an acid group in the radically polymerizable monomers is 1.5 mmol or less per 100 g of the photocurable ink composition; and an image forming method performed by using the photocurable ink composition.

Photocurable ink composition and image forming method

There are provided an ink jet ink composition including water; and particles including a chain polymer including Unit (1), Unit (2), and a hydrophilic group and a polymerizable group, and an image forming method. Cyand Cyeach independently represent a divalent organic group having 3 to 30 carbon atoms including a ring, Yand Yeach independently represent an oxygen atom, a sulfur atom, or a &#x2014;NR&#x2014; group, Rrepresents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, *1 in Unit (1) represents a bonding position to a structural unit other than Unit (1), and *2 in Unit (2) represents a bonding position to a structural unit other than Unit (2). 

Ink jet ink composition and image forming method

Provided are a microcapsule including a shell that has a three-dimensional cross-linked structure containing a hydrophilic group and Structure (1) and including a core that is in the interior of the shell, in which at least one of the shell or the core has a polymerizable group; and an application thereof. In Structure (1), X represents a (p+m+n)-valent organic group formed by linking at least two groups selected from &#x2014;NH&#x2014;, &#x3e;N&#x2014;, &#x2014;C(&#x2550;O)&#x2014;, &#x2014;O&#x2014;, &#x2014;S&#x2014;, and an aliphatic hydrocarbon group which may have a ring structure, provided that an organic group having an aromatic ring is excluded from X, Rto Rrepresent an aliphatic hydrocarbon group having 5 to 15 carbon atoms which may have a ring structure, provided that an aliphatic hydrocarbon group having an aromatic ring is excluded from Rto R, and * represents a binding position, each of p, m, and n is equal to or greater than 0, and p+m+n equals 3 or greater. 

Microcapsule, aqueous dispersion, method for manufacturing aqueous dispersion, and image forming method

Provided are an aqueous dispersion, a method for manufacturing the aqueous dispersion, and an image forming method in which the image is formed of the aqueous dispersion, the aqueous dispersion including a microcapsule that has a shell having a three-dimensional cross-linked structure containing a urethane bond and/or urea bond, and has a core, in which the shell and/or core has a polymerizable group; a dispersant in which a urethane bond and/or urea bond and an anionic group are contained, a weight-average molecular weight is 5000 or more, and an anionic group value, which is the number of millimoles of the anionic group contained in 1 g of the dispersant, is from 0.10 to 2.50 mmol/g; and water.

Aqueous dispersion, method for manufacturing the same, and image forming method

An ink composition including water, particles that include a polymer having at least one of a urethane bond or a urea bond and have a polymerizable group, and a hydrophobic compound that has an alkyl group having 8 or more carbon atoms and has a molecular weight of 5000 or less, a method for producing the ink composition, and an image-forming method.

Provided is a photocurable ink composition including a resin which has an amine structure having an &#x3b1;-hydrogen atom and contains at least one selected from the group consisting of an alkylthio group, an alkylenethioalkylene group, and a mercapto group and at least one selected from the group consisting of a fluorinated hydrocarbon group, a polysiloxane group, and a hydrocarbon group having 12 or more carbon atoms; at least one of a monofunctional radically polymerizable monomer or a bifunctional radically polymerizable monomer; and a photopolymerization initiator.

A photo-curable ink composition contains an amine resin including a constituent unit A represented by a formula (1) or a formula (2) and a constituent unit B represented by any of a formula (3) to a formula (7) and a radical-polymerizable monomer. In the radical-polymerizable monomer, a content of a radical-polymerizable monomer having an acid group is 1.5 mmol or less per 100 g of the photo-curable ink composition. A method for forming an image using the photo-curable ink composition is also provided. 

An ink composition including: a microcapsule having: a shell having a three-dimensional cross-linked structure including at least one of a urethane bond or a urea bond; and a core encapsulated by the shell; a colorant selected from the group consisting of a colorant having an ionic group and a colorant at least a part of a surface of which being covered with a dispersant having an ionic group; and water, a content ratio of an acidic group-containing compound having at least an acidic group, an acid dissociation constant of 5 or less, and a molecular weight of 2000 or less, relative to a total mass of the ink composition, is 0.5 mass % or less; an ink set, a method for producing an ink composition, and an image recording method.

Ink composition, ink set, image recording method, and method for producing ink composition

Provided is an ink composition including: water; particles that each include a polymer having at least one of a urethane bond or a urea bond, and each have a polymerizable group; and a combination of a polymerization inhibitor A1 that is at least one selected from the group consisting of quinone compounds, nitroso compounds, and N-oxyl compounds, and a polymerization inhibitor A2 that is at least one selected from the group consisting of phenol compounds, or a combination of a polymerization inhibitor B1 that is at least one selected from the group consisting of phenol compounds having a solubility of 1.0 g/100 mL or more in water at 25&#xb0; C., and a polymerization inhibitor B2 that is at least one selected from the group consisting of phenol compounds having a solubility of less than 1.0 g/100 mL in water at 25&#xb0; C.

Provided are an ink composition including water; and a microcapsule which includes: a shell that has a three-dimensional cross-linked structure containing at least one bond selected from a urethane bond or a urea bond, and including a core that contains a di- or lower functional polymerizable compound, a tri- or higher functional polymerizable compound, and a photopolymerization initiator, in which a proportion of the di- or lower functional polymerizable compound is 20% by mass or more with respect to a total mass of the di- or lower functional polymerizable compound and the tri- or higher functional polymerizable compound, and an image forming method using the ink composition.

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Kanagawa, Japan

Ichiro Koyama