Active-energy-ray-curable composition, active-energy-ray-curable ink, composition stored container, apparatus and method for forming two-dimensional or three-dimensional image, two-dimensional or three-dimensional image, structure, and processed product

Abstract

An active-energy-ray-curable composition, which satisfies the following relationships of absorbance: a ratio of absorbance at a wavelength of 400 nm to absorbance at a wavelength of 750 nm is 1.4 or more but 1.6 or less; and a ratio of absorbance at a wavelength of 365 nm to absorbance at a wavelength of 500 nm is 1.2 or less.

1 . An active-energy-ray-curable composition, which satisfies the following relationships of absorbance.
 a ratio of absorbance at a wavelength of 400 nm to absorbance at a wavelength of 750 nm is 1.4 or more but 1.6 or less; and   a ratio of absorbance at a wavelength of 365 nm to absorbance at a wavelength of 500 nm is 1.2 or less.   
     
     
         2 . The active-energy-ray-curable composition according to  claim 1 , wherein:
 a volume average particle diameter of dispersoid particles in the active-energy-ray-curable composition is 100 nm or more but 150 nm or less;   an amount of the dispersoid particles having a volume average particle diameter of 50 nm or less is 10% by mass or less relative to a total amount of the dispersoid particles; and   an amount of the dispersoid particles having a volume average particle diameter of 230 nm or more is 10% by mass or less relative to the total amount of the dispersoid particles.   
     
     
         3 . The active-energy-ray-curable composition according to  claim 1 , wherein:
 the active-energy-ray-curable composition comprises a carbon black subjected to oxidation treatment at pH 3.5 or less;   a number average particle diameter of the carbon black is 40 nm or more but 60 nm or less; and   a DBP oil absorption amount of the carbon black is 35 g/100 g or more but 55 g /100 g or less.   
     
     
         4 . The active-energy-ray-curable composition according to  claim 1 , wherein the active-energy-ray-curable composition comprises an acrylic block polymer having an acid value of 5 mg KOH/g or more and an amine value of 15 mg KOH/g or more. 
     
     
         5 . The active-energy-ray-curable composition according to  claim 1 , wherein the active-energy-ray-curable composition is a material for forming a three-dimensional object. 
     
     
         6 . The active-energy-ray-curable composition according to  claim 1 , wherein the active-energy-ray-curable composition has sensitivity to light of a light-emitting diode having a luminescence peak in a wavelength range of 360 nm or more but 400 nm or less. 
     
     
         7 . An active-energy-ray-curable ink, which satisfies the following relationships of absorbance:
 a ratio of absorbance at a wavelength of 400 nm to absorbance at a wavelength of 750 nm is 1.4 or more but 1.6 or less; and   a ratio of absorbance at a wavelength of 365 nm to absorbance at a wavelength of 500 nm is 1.2 or less.   
     
     
         8 . The active-energy-ray-curable ink according to  claim 7 , wherein the active-energy-ray-curable ink is used for inkjet. 
     
     
         9 . A composition stored container, comprising:
 a container; and   the active-energy-ray-curable composition according to  claim 1 .   
     
     
         10 . An apparatus for forming a two-dimensional or three-dimensional image, the apparatus comprising:
 the composition stored container according to  claim 9 ; and   an irradiator configured to irradiate the active-energy-ray-curable ink with active energy rays.   
     
     
         11 . The apparatus for forming the two-dimensional or three-dimensional image according to  claim 10 , further comprising:
 an ejecting unit configured to eject the active-energy-ray-curable ink.   
     
     
         12 . A method for forming a two-dimensional or three-dimensional image, the method comprising irradiating an active-energy-ray-curable composition with active energy rays, wherein the active-energy-ray-curable composition satisfies the following relationships of absorbance:
 a ratio of absorbance at a wavelength of 400 nm to absorbance at a wavelength of 750 nm is 1.4 or more but 1.6 or less; and   a ratio of absorbance at a wavelength of 365 nm to absorbance at a wavelength of 500 nm is 1.2 or less.   
     
     
         13 . The method for forming the two-dimensional or three-dimensional image according to  claim 12 , comprising:
 ejecting an active-energy-ray-curable ink comprising the active-energy-ray-curable composition.   
     
     
         14 . The method for forming the two-dimensional or three-dimensional image according to  claim 12 , wherein the active energy rays comprise light of a light-emitting diode. 
     
     
         15 . A two-dimensional or three-dimensional image, which is obtained through curing the active-energy-ray-curable composition according to  claim 1  by irradiating with active energy rays. 
     
     
         16 . A structure comprising:
 a base; and   the two-dimensional or three-dimensional image according to  claim 15  on the base.   
     
     
         17 . A processed product, which is obtained by drawing the two-dimensional or three-dimensional image according to  claim 15 .