A charging device is provided. A needle-like electrode for charging the surface of a photoreceptor drum is formed with a vibrating portion for vibrating the needle-like electrode by the vibration. The vibrating portion is a piezoelectric bimorph element in which two piezoelectric elements are bonded together and a base portion is formed therebetween. When a voltage is applied to the piezoelectric bimorph element, a free end thereof is curved to vibrate.

 
Web www.patentalert.com

< OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME

> IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF

> DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

~ 00533