ACTIVE-LIGHT-CURING INKJET INK AND IMAGE FORMATION METHOD

WIPO Patent Application WO/2015/033584

A1

Provided are an active-energy-ray-curing inkjet ink which has excellent discharge stability and does not cause a local thermal polymerization reaction, and an image formation method using the same. The present invention pertains to an active-light-curing inkjet ink which contains a photopolymerizable compound, a photoinitiator and a gelling agent, and which undergoes a reversible sol-gel phase transition due to temperature, wherein the photopolymerizable compound contains one or more combinations of: a compound (A) having at least n number (n being an integer of 2 or greater) of (meth)acrylate ester units, represented by the indicated formula, and having a molecular weight in the range of 280-1500; and a compound (B) having n-1 number of (meth)acrylate ester units and a hydroxyl group, represented by the indicated formula, and having a molecular weight in the range of 280-1500 (In the formula, n represents an integer of 2 or more, and R represents n number of hydrocarbon groups which may be branched, are straight-chain-shaped or ring-shaped, and may contain an oxygen atom or a nitrogen atom. n is the same integer and R represents the same structure in both compounds (A and B).) Furthermore, in the one or more combinations of the compound (A) and the compound (B), the amount of the compound (B) contained is 5-15 mass% of the total mass of the compound (A) corresponding to the compound (B), the amount of the gelling agent contained is 0.5-7.0 mass% in relation to the total mass of the ink, and the gelling temperature is 50°C or higher.

JP2001214097	OXIDE INK, METHOD FOR PRODUCING THE SAME AND METHOD FOR PRODUCING CERAMIC ELECTRONIC PART
JP2004035772	INK FOR INK JET RECORDING AND INK JET RECORDING METHOD
JP5659453	Ink composition

TAKABAYASHI TOSHIYUKI
IKEDA MASASHI

PCT/JP2014/004632

March 12, 2015

September 09, 2014

Click for automatic bibliography generation  

KONICA MINOLTA INC (JP)

C09D11/00; B41J2/01; B41M5/00; C09D11/30; C09D11/36; C09D11/38

WO2013094198A1

2013-06-27

JP2013159615A	2013-08-19
JP2012236998A	2012-12-06
US20120287199A1	2012-11-15
JP2005126507A	2005-05-19
JP2005255821A	2005-09-22
JP2010111790A	2010-05-20

"Organic materials for imaging", 1993, pages: 187 - 192

WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)

View/Download PDF      PDF Help

Previous Patent: MANUFACTURING DEVICE AND MANUFACTURING METHOD FOR HYDROGEN AND SYNTHETIC NATURAL GAS

Next Patent: OVERCURRENT PROTECTION APPARATUS