Ricoh Company, Ltd.

Shohtaroh Hoshi

Tatsuya Kubo

Kazuki Yogosawa

Takuya Sekine

Takuya Suganuma

Hotaru Hashikawa

Tatsumi Yamada

Yuta Yabuta

A filter holding device includes an opening portion and a filter. The opening portion communicates between an inside and an outside of the filter holding device. The filter is disposed in the opening portion and includes a first side and a second side. The first side is located adjacent to the inside of the filter holding device. The second side is located adjacent to the outside of the filter holding device. The filter has a larger weight density per unit volume at the second side than a weight density per unit volume at the first side and has a larger area of a surface intersecting a communication direction at the second side than an area of a surface intersecting the communication direction at the first side.

Filter holding device, developing device, process cartridge, and image forming apparatus

Growing community of inventors

Kanagawa, Japan

Shohtaroh Hoshi