Patent ID: 8761629
Filing Date: 2014-06-24
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a developing unit which develops a latent image formed on a photosensitive member with a developing agent; a supply unit which supplies, to said developing unit, a developing alternating current bias voltage with a waveform having a pulse period during which a rectangular wave is output and a blank period during which no rectangular wave is output; and an input signal generation unit which generates, as an input signal to be supplied to a primary side of a transforming unit that forms the developing alternating current bias voltage, an input signal obtained by adding an additional pulse smaller in width than the rectangular wave in the pulse period at a timing to transit from the pulse period to the blank period, wherein said input signal generation unit sets an OFF period of a predetermined width near a start of each rectangular wave corresponding to the pulse period of the input signal.