Ricoh Company, Ltd.

Tsutomu Yamakami

Masami Tomita

Takeshi Uchitani

Hiroyuki Nagashima

Toshio Koike

Naohiro Kumagai

Takeshi Shintani

Masanori Kawasumi

Eisaku Murakami

Atsushi Sampe

Masato Yanagida

Hiroshi Kawano

Mitsuo Shibusawa

Atsushi Arai

A charging device including a charging roller having a metal cylinder and an elastic layer located thereon, and a cleaner for cleaning the surface of the charging roller. The cleaner includes a driving shaft and a cleaning roller which is rotatably mounted on the driving shaft. The cleaning roller is made of a non-cellular foam resin having a density of from 5 to 15 kg/mand a tensile strength of from 1.2 to 2.2 kg/cm.

Charging device, and process cartridge and image forming apparatus including the charging device using the same

A charging device including a charging roller having a metallic cylinder with an elastic layer disposed thereon, and a cleaner for cleaning the surface of the charging roller. The cleaner includes a driving shaft and a cleaning roller rotatably mounted on the driving shaft. The cleaning roller is made of a non-cellular foam resin having a density of from 5 to 15 kg/mand a tensile strength of from 1.2 to 2.2 kg/cm.

Charging device, and process cartridge and image forming apparatus including the charging device

A copying paper processing apparatus comprises a sorter, a stapling device for stapling sheets of copying paper sorted by the sorter, and a device for automatically selecting and setting a sort mode when a staple mode is selected and set. The processing apparatus may comprise a switch for selecting the stapling operation, and a device for automatically selecting and setting a staple mode when the staple selecting switch is turned on and a sort mode is selectively set. The processing apparatus may comprise a device for transmitting a signal indicating that there is no staple needle when the number of staple needles left in the stapling device is a predetermined number greater than the total number of bins of the sorter. The processing apparatus may comprise a device for inhibiting the operation of the stapling device when one of sensors respectively disposed in a paper-receiving base of the stapling device and a sorter bin of the sorter detects that there is no paper.

Copying paper processing apparatus

Growing community of inventors

Yokohama, Japan

Tsutomu Yamakami