Image-forming method and organic light-emitting element for a light source for exposure used therein

An image-forming method, which comprises:

• subjecting a color light-sensitive material to exposure, by using, at least, a first organic light-emitting element whose peak wavelength of the light-emission spectrum is in a first wavelength region of 380 to 500 nm, a second organic light-emitting element whose peak wavelength of the light-emission spectrum is in a second wavelength region of 500 to 600 nm, and a third organic light-emitting element whose peak wavelength of the light-emission spectrum is in a third wavelength region of 600 to 740 nm, and
• subjecting the exposed color light-sensitive material to development processing;
• wherein the color light-sensitive material has, at least, spectral sensitivities in the from first to third wavelength regions;
• wherein the organic light-emitting elements are those provided with at least one organic compound layer that includes a light-emitting layer, on an anode or cathode;
• wherein an amount of the exposure is controlled by way of a time modulation system or a pulse modulation system;
• wherein the peak wavelengths of the light-emission spectra among the first to third light-emitting elements are apart at least 50 nm from each other;
• and
• wherein the half width of the light-emission spectrum of the second light-emitting element is 80 nm or less.