Abstract: An image formation method includes an ink ejection process of ejecting, from an inkjet head having a liquid-repellent film on an ejection surface thereof, an ink composition including: an oxidative-treated carbon black pigment having an average primary particle diameter of 25 nm or less and having an amount of oxygen of 5 atomic % or more on a surface thereof; a water-soluble nonionic compound including at least one selected from the group consisting of an ethyleneoxy chain and a propyleneoxy chain and in which a total number of the ethyleneoxy chain and the propyleneoxy chain is from 3 to 25; and water.

Abstract: An image formation method includes an ink ejection process of ejecting, from an inkjet head having a liquid-repellent film on an ejection surface thereof, an ink composition including: an oxidative-treated carbon black pigment having an average primary particle diameter of 25 nm or less and having an amount of oxygen of 5 atomic % or more on a surface thereof; a water-soluble nonionic compound including at least one selected from the group consisting of an ethyleneoxy chain and a propyleneoxy chain and in which a total number of the ethyleneoxy chain and the propyleneoxy chain is from 3 to 25; and water.

Abstract: An image receiving sheet having a support sheet, an intermediate layer and an image receiving layer, wherein the intermediate layer comprises a polymer and a plasticizer having at least one ester bonds and molecular weight of 700 to 3,000. Otherwise, an image receiving sheet having a support sheet and an image receiving layer wherein the image receiving layer comprises a polymer and the plasticizer. A heat sensitive ink sheet has a heat sensitive ink layer which is formed of a heat sensitive ink material comprising colored pigment and thermoplastic resin such as amorphous organic polymer. An image forming method is conducted by using the heat sensitive ink sheet and one of the image receiving sheets by area gradation by the use of a thermal head or laser beam.

Abstract: An image formation process uses two light-sensitive elements comprising first and second adhesive light-sensitive layers which become nonadhesive upon exposure to light, respectively, and first and second toner elements comprising toner layers (a') and (b') of hues (a) and (b), respectively.

Abstract: An image formation process uses two light-sensitive elements comprising first and second adhesive light-sensitive layers which become nonadhesive upon exposure to light, respectively, and first and second toner elements comprising toner layers (a') and (b') of hues (a) and (b), respectively.