IMAGE PROCESSING METHOD AND IMAGE PROCESSING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an image processing method and image processing device capable of repeatedly forming and erasing high-contrast images at high speeds on a thermoreversible recording medium and suppressing deterioration of the thermoreversible recording medium caused by the repetition.

SOLUTION: The image processing method of this invention includes at least either one of an image forming step of forming an image on the thermoreversible recording medium by irradiating laser light and heating the thermoreversible recording medium in which either transparency or color tone is reversibly changed depending on the temperature and an image erasing step of erasing an image formed on the thermoreversible recording medium by irradiating laser light and heating the thermoreversible recording medium. In the light intensity distribution of the laser light irradiated in at least either one of the image forming step and the image erasing step in the cross section of the direction approximately orthogonal to the travelling direction of the laser light, the light irradiation intensity at the center part is equal to or less than the light irradiation intensity of the peripheral parts.

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