An image recording device comprising: a support member which is configured to support a recording medium by coming into contact with one surface of the recording medium; a transport section (31, 32) which is configured to transport the recording medium in a transport direction; a plurality of color ink heads, which are lined up in the transport direction and which each are configured to discharge photo curable color inks onto the other surface of the recording medium which is transported in the transport direction while being supported by the support member; first irradiation units which are disposed between the color ink heads which are adjacent and which are configured to irradiate light onto the color inks which are discharged from the color ink heads on the upstream side in the transport direction onto the recording medium; a second irradiation unit which is disposed more to the downstream side in the transport direction than the plurality of color ink heads and which is configured to irradiate light which is stronger than the light which is irradiated by the first irradiation units onto the image which is formed using the color inks which are discharged by the plurality of color ink heads; a transparent ink head which is disposed more to the downstream side in the transport direction than the second irradiation unit and which is configured to discharge transparent ink onto the image which is formed on the other surface of the recording medium which is transported in the transport direction while being supported by the support member; and a light irradiation unit which is disposed more on the downstream side in the transport direction than the transparent ink head and which is configured to cure the transparent ink which is discharged onto the image using light irradiation, wherein an interval, where a furthermost downstream color ink head which is disposed furthermost downstream among the plurality of color ink heads in the transport direction and the transparent ink head are lined up in the transport direction, is wider than an interval where the plurality of color ink heads are lined up in the transport direction, characterized in that a time t, where the recording medium moves from a position where the second irradiation unit irradiates light to a position where the transparent ink head discharges the transparent ink, satisfies a relational expression of t > − Ci ⋅ ρ i ⋅ Li ⋅ Lm / λ m log e 1 / 100 where λm is the heat conductivity of the recording medium, Lm is the thickness of the recording medium, Li is the thickness of the color ink which forms the image, Ci is the density of the color ink which forms the image, and pi is the specific heat of the color ink. a support member which is configured to support a recording medium by coming into contact with one surface of the recording medium; a transport section (31, 32) which is configured to transport the recording medium in a transport direction; a plurality of color ink heads, which are lined up in the transport direction and which each are configured to discharge photo curable color inks onto the other surface of the recording medium which is transported in the transport direction while being supported by the support member; first irradiation units which are disposed between the color ink heads which are adjacent and which are configured to irradiate light onto the color inks which are discharged from the color ink heads on the upstream side in the transport direction onto the recording medium; a second irradiation unit which is disposed more to the downstream side in the transport direction than the plurality of color ink heads and which is configured to irradiate light which is stronger than the light which is irradiated by the first irradiation units onto the image which is formed using the color inks which are discharged by the plurality of color ink heads; a transparent ink head which is disposed more to the downstream side in the transport direction than the second irradiation unit and which is configured to discharge transparent ink onto the image which is formed on the other surface of the recording medium which is transported in the transport direction while being supported by the support member; and a light irradiation unit which is disposed more on the downstream side in the transport direction than the transparent ink head and which is configured to cure the transparent ink which is discharged onto the image using light irradiation, wherein an interval, where a furthermost downstream color ink head which is disposed furthermost downstream among the plurality of color ink heads in the transport direction and the transparent ink head are lined up in the transport direction, is wider than an interval where the plurality of color ink heads are lined up in the transport direction, characterized in that a time t, where the recording medium moves from a position where the second irradiation unit irradiates light to a position where the transparent ink head discharges the transparent ink, satisfies a relational expression of t > − Ci ⋅ ρ i ⋅ Li ⋅ Lm / λ m log e 1 / 100 where λm is the heat conductivity of the recording medium, Lm is the thickness of the recording medium, Li is the thickness of the color ink which forms the image, Ci is the density of the color ink which forms the image, and pi is the specific heat of the color ink.