Selective coloring of the skin of a fruit (apples, pears, peaches, apricots), uses a laser or ink jet imprint mask which when peeled off the fruit leaves an inscription on the fruit

摘要

The mask (2) is part transparent on which is deposited , by laser or ink jet printing, opaque pigments so as to form clear and dark parts. The mask is chosen from amongst, color or black and white negative film, a color or black and white slide film. The clear and dark parts of the mask for a group of recognizable distinctive signs, such as letter characters. Method of selective coloring the skin of a fruit which naturally change color when exposed to light, which includes: (a) choosing a zone on the skin of the fruit which will change its color under the action of natural or artificial light; apply to the chosen fruit zone a mask having one or more transparent (clear) zones sensitive to natural or artificial light, as well as one or more or weak (dark) light transmitting zones; illuminate the mask on the fruit for a time sufficiently long so that the fruit zone under the mask naturally changes color, in correspondence which the clear and dark parts of the mask.