PIGMENT INK FOR INKJET RECORDING, PRINTED MATTER AND PRODUCTION METHOD OF PRINTED MATTER

To provide a pigment ink for inkjet recording which is capable of preventing occurrence of non-discharge of the pigment ink from an ink discharge head caused by viscosity rise of the pigment ink during print stop and capable of preventing of printing failure such as non-coloration of an edge part of...

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Bibliographic Details
Main Authors ICHIKAWA RYOTA, NAITO YURI, HOSAKA MASAKI, KITADE MAIKO
Format Patent
LanguageEnglish
Japanese
Published 16.04.2020
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COLOUR PRINTING
CORRECTING FLUIDS
CORRECTION OF TYPOGRAPHICAL ERRORS
DYES
FILLING PASTES
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
INKS
LINING MACHINES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PERFORMING OPERATIONS
POLISHES
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:To provide a pigment ink for inkjet recording which is capable of preventing occurrence of non-discharge of the pigment ink from an ink discharge head caused by viscosity rise of the pigment ink during print stop and capable of preventing of printing failure such as non-coloration of an edge part of a printed image formable by the pigment ink firstly discharged when the printing is resumed.SOLUTION: The present invention relates to a pigment ink for inkjet recording which is characterized in that, in a production process of a printed matter using an inkjet recording device, a ratio of color optical density of an image formed by a second ink drop when the ink is redischarged after one minute from a time when the inkjet recording device stopped to discharge the ink and the color optical density of an image formed with tenth ink drop is 0.75 to 1.5.SELECTED DRAWING: Figure 1 【課題】本発明が解決しようとする課題は、印刷停止中に顔料インクの粘度上昇に起因したインク吐出ヘッドからの顔料インクの不吐出発生を防止でき、印刷を再開した際に最初に吐出される顔料インクによって形成されうる印刷画像の端部が着色されない等の印刷不良が生じることを防止可能なインクジェット記録用顔料インクを提供することである。【解決手段】本発明は、インクジェット記録装置を用いた印刷物の製造工程において、前記インクジェット記録装置がインクの吐出を停止した時から１分後に、インクを再び吐出した際の２滴目のインク滴で形成された像の発色濃度と、１０滴目のインク滴で形成された像の発色濃度との比率が０．７５〜１．５であることを特徴とするインクジェット記録用顔料インクに関するものである。【選択図】図１
Bibliography:Application Number: JP20180190895