Radiation-Curable Ink Jet Composition And Ink Jet Method
A radiation, curing type technology, applied in the direction of replication/marking method, ink, printing, etc., can solve the problems of reduced adhesion of ink coating film, poor ejection stability, clogging and other problems
Active Publication Date: 2020-12-18
SEIKO EPSON CORP
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- Description
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- Application Information
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Problems solved by technology
[0003]
However, since the white ink composition requires masking properties, the content of the pigment may be more than that of other colors, but there is a problem that the adhesion of the ink coating film decreases as the content of the pigment increases.
In addition, when using a conventional inkjet head, the white ink containing a large amount of white coloring material with a large specific gravity is likely to cause clogging, etc., and there is also a problem of poor ejection stability.
Method used
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Embodiment
[0144] Hereinafter, the present invention will be described more specifically by way of examples. The present invention is not limited in any way by the following examples.
[0145] 1. Preparation of Inkjet Composition
[0146] First, weigh the colorant, dispersant, and a part of each monomer, put them into a pigment dispersion tank, put a ceramic bead mill with a diameter of 1 mm in the tank, and stir to obtain a colorant dispersed in the monomer Pigment dispersion in . Then, according to the composition recorded in Table 1, add the remaining monomer, polymerization initiator and polymerization inhibitor to the stainless steel container, that is, the tank for the mixture, mix and stir to dissolve it completely, add the pigment dispersion obtained above, and then The mixture was mixed and stirred at normal temperature for 1 hour, and then filtered through a 5 μm membrane filter to obtain the radiation curable inkjet composition of each example. In addition, the numerical va...
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Abstract
The invention discloses a radiation-curable ink jet composition and an ink jet method. A coating film having shielding properties, flexibility, adhesion properties, and scratch resistance can be obtained. The radiation-curable ink jet composition includes a polymerizable compound component including a monofunctional monomer component and a multifunctional monomer component, a photopolymerization initiator, and titanium oxide as a white color material. The content of the monofunctional monomer component is 90 mass % or more based on the total amount of the polymerizable compound component, andthe weighted average of the glass transition temperatures of homopolymers of the respective polymerizable compounds is 48 DEG C. or more when the mass ratios of the contents of the respective polymerizable compounds are weighted.
Description
technical field [0001] The present invention relates to a radiation curable inkjet composition and an inkjet method. Background technique [0002] Conventionally, for example, as described in Patent Document 1, it is known that by including 2 to 3% by mass of a colorant, vinyl ether group-containing (meth)acrylates, acryloyl morpholine, etc., and vinyl caprolactam, etc. , A radiation-curable inkjet composition with less odor and good curability and flexibility after curing can be obtained. [0003] However, since the white ink composition requires hiding properties, the content of the pigment is sometimes increased compared to other colors, but there is a problem that the adhesion of the ink coating film decreases as the content of the pigment increases. In addition, when a conventional inkjet head is used, the white ink containing a large amount of white coloring material with a large specific gravity tends to cause clogging and the like, and also suffers from poor dischar...
Claims
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IPC IPC(8): C09D11/322B41M5/00B41M7/00
CPCC09D11/322B41M5/0023B41M7/0081C09D11/101C09D11/38C09D11/107C09D11/037B41J2/2107B41J2/21
Inventor 关根翠田中恭平中野景多郎
Owner SEIKO EPSON CORP