Patent ID: 6192203
Filing Date: 2001-02-20
Classification: G03G

Abstract:
An image forming apparatus comprising:a toner image carrier for carrying a toner image formed in correspondence to image data;transfer means to which a voltage having a polarity different from that of the toner is applied and which transfers the toner image formed on said toner image carrier to a recording medium;temperature and humidity detecting means for measuring a temperature and a humidity of an atmosphere within the apparatus or out of the apparatus;voltage information storing means in which data of transfer voltages corresponding to predetermined discontinuous humidity are stored;control means for calculating a transfer voltage by interpolating data of the transfer voltage in correspondence to a stored temperature and humidity and measured temperature and humidity in the case that the measured temperature and humidity do not coincide with the discontinuous temperature and humidity stored in said voltage information storing means; andvoltage applying means for applying the transfer voltage calculated by said control means to the transfer means,wherein said control means performs a linear interpolation with respect to at least one of the temperature and the humidity.