Inkjet ink and tablet printed matter

An inkjet ink comprising:

• a food dye comprising Blue No. 1;
• a fixing agent comprising trehalose and reduced isomaltulose;
• and
• a solvent comprising water and ethanol, wherein
• an amount of the trehalose is in a range of 10.0 mass % or more and 15.0 mass % or less based on a total mass of the inkjet ink,
• an amount of the reduced isomaltulose is in a range of 9.0 mass % or more and 10.0 mass % or less based on the total mass of the inkjet ink,
• the amount of the trehalose is greater than the amount of the reduced isomaltulose, and
• an amount of the Blue No. 1 is in a range of 0.7 mass % or more and 3.5 mass % or less based on the total mass of the inkjet ink.

An inkjet ink comprising:

• a food dye comprising Blue No. 1;
• a fixing agent comprising trehalose and reduced isomaltulose;
• and
• a solvent comprising water and ethanol, wherein
• an amount of the trehalose is 10.0 mass % based on a total mass of the inkjet ink,
• an amount of the reduced isomaltulose is 10 mass % based on the total mass of the inkjet ink, and
• an amount of the Blue No. 1 is in a range of 1.0 mass % or more and 5.0 mass % or less based on the total mass of the inkjet ink.

An inkjet ink comprising:

• a food dye comprising Blue No. 1;
• a fixing agent comprising trehalose and reduced isomaltulose;
• and
• a solvent comprising water, ethanol and propylene glycol, wherein
• an amount of the trehalose is in a range of 7.5 mass % or more and 15.0 mass % or less based on a total mass of the inkjet ink,
• an amount of the reduced isomaltulose is in a range of 8.0 mass % or more and 10.0 mass % or less based on the total mass of the inkjet ink,
• an amount of the Blue No. 1 is in a range of 1.0 mass % or more and 5.0 mass % or less based on the total mass of the inkjet ink, and
• an amount of the propylene glycol is 28.0 mass % or less based on the total mass of the inkjet ink.