Ricoh Company, Ltd.

Shigekazu Koguchi

Hiroyuki Sugiyama

Yoshinori Nakagawa

Tomoko Takahashi

Kenichi Iwata

Masahiko Shakuto

Ryuji Yoshida

Taichi Urayama

Shinji Minami

Yohei Sakon

A disclosed human body detecting device includes a human body detector configured to detect a human body, and an electric power supply status switching part configured to switch a first shifting mode to a second shifting mode when the human body detecting device is not operated, and the human body detector continuously detects the human body for a predetermined time. The first shifting mode indicates a first status shifting to a second status based on a first condition in which the human body is detected by the human body detector, the second status representing electric energy consumption less than electric energy consumption of the first status, and the second shifting mode indicates the first status shifting to the second status based on a second condition other than the first condition.

Human body detecting device

An image forming apparatus includes an electrostatic latent image bearer; a charger to charge a surface of the electrostatic latent image bearer; a power source to output a charging bias supplied to the charger; an electrostatic latent image writing unit to write an electrostatic latent image on the surface of the electrostatic latent image bearer charged by the charger; a developing unit including a developing member to develop the electrostatic latent image to obtain a toner image; a developing power source to output a developing bias supplied to the developing unit; a processor to adjust the charging bias output from the power source to a predetermined target value; and a storage unit to store an adjustment value algorithm.

Image forming apparatus

Growing community of inventors

Kanagawa, Japan

Shigekazu Koguchi