Magnetic image character recognizing method

PURPOSE: To prepare a document capable of substantially preventing the alteration of characters or the like displayed thereon. CONSTITUTION: A latent image is formed and developed with a toner composition consisting of a resin particle, a magnetite particle, a colored organic soluble dye, a colored organic insoluble dye or the salt and optionally an additive component containing an aliphatic hydrocarbon or a polymer alcohol expressed by the formula, CH3 (CH2 )n CH2 OH (in the formula, (n) expresses 30-500). The image substantially prevented from the alteration is obtained.