Fuji Xerox Co., Ltd.

Jin Kasono

Manabu Furuki

Koji Fukushima

Yoshihiro Maekawa

Naoki Ohnishi

Masato Ono

Hiroshi Takayama

Hiroyuki Miura

Eiji Funabashi

Kazuo Sueyoshi

An image forming apparatus containing an image holding member, a contact-type charger for charging a surface of the image holding member, an exposure unit for forming an electrostatic latent image by exposing the charged surface of the image holding member, a developing unit for developing the electrostatic latent image with a spherical toner to obtain a toner image, and a transfer member for electrostatically transferring the toner image from the surface of the image holding member onto a transfer material. A number of toner particles remaining on the surface of the image holding member before passing through an abutting portion between the image holding member and the contact-type charger is in a range of 100 to 400 per unit area (mm).

Image forming apparatus and a process cartridge which is attachable and detachable from the image forming apparatus

An image forming device which is capable of preventing generation of toner filming and obtaining a stable image quality without defects over a long period and which is environmentally friendly. The image forming device, for forming an image with a spherical toner, includes image holding members, contact type charging member, exposing member, developing member, and transfer member. A toner shape change ratio (Tt) of deformed toner particles passed between the contacting portions of the image holding members and the charging member is in a range of 50 to 100 percent.

Image forming device

Growing community of inventors

Minami-ashigara, Japan

Jin Kasono