Patent ID: 6055389
Filing Date: 2000-04-25
Classification: G03G

Abstract:
An electrophotographic recording apparatus transferring toner images to a recording medium by applying a transfer voltage to a transfer roller, comprising:a transfer power source supplying current to said transfer roller before each toner image among said toner images is transferred, and applying said transfer voltage to said transfer roller while said toner image is being transferred;a voltage reading module coupled to said transfer power source, taking at least one voltage reading of a voltage generated by passage of said current through said transfer roller before each said toner image is transferred;a memory coupled to said voltage reading module, storing said voltage reading;a voltage setting module coupled to said memory, setting said transfer voltage according to said voltage reading, when each said toner image is transferred; anda comparison module comparing the voltage reading taken by said voltage reading module with a previous voltage reading stored in said memory, thereby determining when said transfer roller is adequately charged for transfer of said toner image to begin.