The present invention relates to a method for fluorescent image formation
which can form a highly scratch-resistant fluorescent full-color image
using a colorless fluorescent agent and can freely regulate the tone of
color mixture of a combination of two or more fluorescent colors in order
to impart, to articles, a higher level of forgery preventive function
than a prior art technique and a print having a high level of forgery
preventive function. The invention characterized in that fluorescent inks
are provided that are substantially colorless upon visible light
irradiation and contain organic fluorescent agents which, upon
ultraviolet light irradiation, emit fluorescences in a visible region,
and that two or more fluorescent inks, which emit fluorescences having
mutually different color tones, are deposited on a printing face in its
image formation region according to information on an image to be printed
in a dot matrix manner so that dots of one color do not overlap with dots
of another color.