Active energy ray curable composition, stereoscopic modeling material, active energy ray curable ink, inkjet ink, composition storage container, two-dimensional or three-dimensional image forming apparatus, two-dimensional or three- dimensional image forming method, structural body, and processed product

22:

• The method of claim 21, further comprising storing said the active energy ray curable composition at 70° C. for two weeks, wherein a third amount of the dispersant is adsorbed to the pigment, and the third amount ranges from 80% to 120% of the first amount.

23:

• The method of claim 21, wherein the pigment has a number average primary particle diameter of from 220 to 260 nm.

24:

• The method of claim 21, wherein the dispersant comprises an acrylic block copolymer having an acid value of 5 mgKOH/g or more and an amine value of 15 mgKOH/g or more.

25:

• The method of claim 21,
• wherein the active energy ray curable composition has a volume average particle diameter of from 230 to 300 nm, and
• wherein 10% by volume or less of the active energy ray curable composition has a particle diameter of 170 nm or less and another 10% by volume or less of the active energy ray curable composition has a particle diameter of 380 nm or more.

26:

• The method of claim 21, wherein a ratio (Dv/Dn) of a volume average particle diameter (Dv) of the active energy ray curable composition and a number average primary particle diameter (Dn) of the pigment ranges from 1 to 1.2.

28:

• The method of claim 27, further comprising storing said the active energy ray curable composition at 70° C. for two weeks, wherein a third amount of the dispersant is adsorbed to the pigment, and the third amount ranges from 80% to 120% of the first amount.

29:

• The method of claim 27, wherein the pigment has a number average primary particle diameter of from 220 to 260 nm.

30:

• The method of claim 27, wherein the dispersant comprises an acrylic block copolymer having an acid value of 5 mgKOH/g or more and an amine value of 15 mgKOH/g or more.

31:

• The method of claim 27,
• wherein the active energy ray curable composition has a volume average particle diameter of from 230 to 300 nm, and
• wherein 10% by volume or less of the active energy ray curable composition has a particle diameter of 170 nm or less and another 10% by volume or less of the active energy ray curable composition has a particle diameter of 380 nm or more.

32:

• The method of claim 27, wherein a ratio (Dv/Dn) of a volume average particle diameter (Dv) of the active energy ray curable composition and a number average primary particle diameter (Dn) of the pigment ranges from 1 to 1.2.

34:

• The method of claim 33, further comprising storing said the active energy ray curable composition at 70° C. for two weeks, wherein a third amount of the dispersant is adsorbed to the pigment, and the third amount ranges from 80% to 120% of the first amount.

35:

• The method of claim 33, wherein the pigment has a number average primary particle diameter of from 220 to 260 nm.

36:

• The method of claim 33, wherein the dispersant comprises an acrylic block copolymer having an acid value of 5 mgKOH/g or more and an amine value of 15 mgKOH/g or more.

37:

• The method of claim 33,
• wherein the active energy ray curable composition has a volume average particle diameter of from 230 to 300 nm, and
• wherein 10% by volume or less of the active energy ray curable composition has a particle diameter of 170 nm or less and another 10% by volume or less of the active energy ray curable composition has a particle diameter of 380 nm or more.

38:

• The method of claim 33, wherein a ratio (Dv/Dn) of a volume average particle diameter (Dv) of the active energy ray curable composition and a number average primary particle diameter (Dn) of the pigment ranges from 1 to 1.2.