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1. WO2020067045 - HEAT-SENSITIVE RECORDING MATERIAL

Publication Number WO/2020/067045
Publication Date 02.04.2020
International Application No. PCT/JP2019/037329
International Filing Date 24.09.2019
IPC
B41M 5/42 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
40characterised by the base, intermediate or covering layers; Heat, radiation filtering or absorbing means or layers; combined with layers or compositions suitable for other methods of image registration; Special originals for reproduction by thermography
42Intermediate or covering layers
B41M 5/323 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
30using chemical colour formers
323Organic colour formers, e.g. leuco dyes
B41M 5/44 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
40characterised by the base, intermediate or covering layers; Heat, radiation filtering or absorbing means or layers; combined with layers or compositions suitable for other methods of image registration; Special originals for reproduction by thermography
42Intermediate or covering layers
44characterised by the macromolecular compounds
CPC
B41M 5/323
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
30using chemical colour formers
323Organic colour formers, e.g. leuco dyes
B41M 5/42
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
40characterised by the base ; backcoat; , intermediate, or covering layers, ; e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
42Intermediate, ; backcoat; , or covering layers
B41M 5/44
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
40characterised by the base ; backcoat; , intermediate, or covering layers, ; e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
42Intermediate, ; backcoat; , or covering layers
44characterised by the macromolecular compounds
Applicants
  • 王子ホールディングス株式会社 OJI HOLDINGS CORPORATION [JP]/[JP]
Inventors
  • 諸藤 健太郎 MOROFUJI, Kentaro
Agents
  • 特許業務法人三枝国際特許事務所 SAEGUSA & PARTNERS
Priority Data
2018-18081626.09.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HEAT-SENSITIVE RECORDING MATERIAL
(FR) MATÉRIAU D'IMPRESSION THERMOSENSIBLE
(JA) 感熱記録体
Abstract
(EN)
Disclosed is a heat-sensitive recording material which sequentially comprises, on a supporting body, an intermediate layer, a primer coating layer that contains hollow particles and a polyvinyl alcohol resin, and a heat-sensitive recording layer that contains a leuco dye and a coloration agent in this order, and which is configured such that: the intermediate layer contains a crosslinking agent that is crosslinkable with respect to the polyvinyl alcohol resin; and the percentage of hollowness of the hollow particles is 60% or more. Also disclosed is a method for producing a heat-sensitive recording material, which comprises the following steps (A)-(C): (A) a step wherein a coating liquid which contains a crosslinking agent that is crosslinkable with respect to polyvinyl alcohol resins is applied onto a supporting body; (B) a step wherein a coating liquid for primer coating layers, which contains a polyvinyl alcohol resin and hollow particles having a percentage of hollowness of 60% or more, is applied onto the coating liquid applied in the step (A) and is subsequently dried thereon; and (C) a step wherein a coating liquid for heat-sensitive recording layers, which contains a leuco dye and a coloration agent, is applied onto a primer coating layer and is subsequently dried thereon.
(FR)
La présente invention concerne un matériau d'impression thermosensible qui comprend séquentiellement, sur un corps de support, une couche intermédiaire, une couche de revêtement d'apprêt qui contient des particules creuses et une résine d'alcool polyvinylique, et une couche d'impression thermosensible qui contient un colorant leuco et un agent de coloration dans cet ordre, et qui est conçue de telle sorte que : la couche intermédiaire contient un agent de réticulation qui est réticulable par rapport à la résine d'alcool polyvinylique ; et le pourcentage de creux des particules creuses est supérieur ou égal à 60 %. La présente invention concerne également un procédé de production d'un matériau d'impression thermosensible, qui comprend les étapes suivantes (A)-(C) : (A) une étape dans laquelle un liquide de revêtement qui contient un agent de réticulation qui est réticulable par rapport aux résines d'alcool polyvinylique est appliqué sur un corps de support ; (B) une étape dans laquelle un liquide de revêtement pour des couches de revêtement d'apprêt, qui contient une résine d'alcool polyvinylique et des particules creuses ayant un pourcentage de creux de 60 % ou plus, est appliqué sur le liquide de revêtement appliqué dans l'étape (A) et est ensuite séché sur celui-ci ; et (C) une étape dans laquelle un liquide de revêtement pour des couches d'impression thermosensibles, qui contient un colorant leuco et un agent de coloration, est appliqué sur une couche de revêtement d'apprêt et est ensuite séché sur celle-ci.
(JA)
開示されているのは、支持体上に、中間層と、中空粒子及びポリビニルアルコール系樹脂を含有する下塗り層と、ロイコ染料及び呈色剤を含有する感熱記録層とをこの順に有する感熱記録体であって、該中間層がポリビニルアルコール系樹脂に対して架橋可能な架橋剤を含有し、該中空粒子の中空率が60%以上である感熱記録体、並びに以下の工程(A)~(C)を含む感熱記録体の製造方法である:(A)支持体上に、ポリビニルアルコール系樹脂に対して架橋可能な架橋剤を含有する塗液を塗布する工程、(B)工程(A)で塗布された塗液上に、中空率が60%以上である中空粒子及びポリビニルアルコール系樹脂を含有する下塗り層用塗液を塗布及び乾燥する工程、及び(C)下塗り層上に、ロイコ染料及び呈色剤を含有する感熱記録層用塗液を塗布及び乾燥する工程。
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