| 摘要 |
PURPOSE:To raise the flying efficiency of a non-magnetic one component toner and also to execute the uniform electrostatic charge of the toner by impressing successively the voltage having regularity at a constant period between different electrodes of an electrode group of a developer supplying body. CONSTITUTION:An electrode group 30 is provided at two pieces/mm. pitches on the surface of a developing sleeve 31 which rotates and moves, and is opposed to an Se-Te photoreceptor 11 at an interval of 50mu. Various control codes VC00- VC03 are generated from a voltage control code generating circuit 43 to the electrode group 30 in accordance with a value of an octal counter 42 which executes a counting operation by a pulse outputted from a reference oscillator 41 and controls consecutive voltage scanning periods, by which voltages En0-En7 generated from a control voltage generating circuit in accordance with each code are impressed. By changing a voltage impressing pattern to the electrode group and oscillation frequency 41, the development conditions such as a toner carrying speed, etc. can be changed. |
