Active energy ray curing inkjet ink, printed product, inkjet printing apparatus, and inkjet printing method
AssigneesDuplo Corporation, Asia Stencil Paper Co., Ltd.
InventorsShuhei Yamamoto, Kazuhiro Tanaka, Tomohiko Niwa, Kazuki Imai
Life of this patent
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Abstract
This invention forms a good unrepellent uniform coating film and an image having neither image missing nor image blur by using an inkjet printing method. Active energy ray curing inkjet ink contains (A) an active energy ray curing monomer and/or an active energy ray curing oligomer, (B) a photopolymerization initiator, and (C) a surface tension adjusting agent, and has a viscosity of 3.0 to 6.0 mPa·s at 35° C.
Claims10
An active energy ray curing inkjet ink containing components (A) to (C) below:
- (A) an active energy ray curing monomer and/or an active energy ray curing oligomer;
- (B) a photopolymerization initiator;
- and (C) a surface tension adjusting agent, and
- having a viscosity of 4.5 to 9.0 mPa·s at 25° C., and a viscosity of 3.0 to 6.0 mPa·s at 35° C.
An inkjet printing apparatus comprising:
- a conveyance element that conveys a substrate;
- an inkjet head that ejects active energy ray curing inkjet ink from nozzles toward the substrate conveyed by the conveyance element, the active energy ray curing inkjet ink containing components (A) to (C) below:
- (A) an active energy ray curing monomer and/or an active energy ray curing oligomer;
- (B) a photopolymerization initiator;
- and
- (C) a surface tension adjusting agent, and having a viscosity of 3.0 to 6.0 mPa·s at 35° C.;
- and
- an active energy source that irradiates, with an active energy ray, the substrate coated with the active energy ray curing inkjet ink ejected from the inkjet head, while holding a temperature at 35° C. to 40° C. when the active energy ray curing inkjet ink is ejected from the inkjet head.
An inkjet printing method comprising:
- conveying a substrate by a conveyance element;
- ejecting active energy ray curing inkjet ink toward the substrate conveyed by the conveyance element by using an inkjet head including nozzles facing the substrate, the active energy ray curing inkjet ink containing components (A) to (C) below:
- (A) an active energy ray curing monomer and/or an active energy ray curing oligomer;
- (B) a photopolymerization initiator;
- and
- (C) a surface tension adjusting agent, and having a viscosity of 4.5 to 9.0 mPa·s at 25° C. and a viscosity of 3.0 to 6.0 mPa·s at 35° C.;
- coating the substrate with the active energy ray curing inkjet ink;
- and
- curing the active energy ray curing inkjet ink by irradiating the substrate coated with the active energy ray curing inkjet ink with an active energy ray.
Dependencies are inferred from the claim text.