Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Yoshiyuki Hayashi

Kosuke Narita

Hiroyuki Miura

Taketoshi Hoshizaki

Takuro Hoshio

Jiro Korenaga

Yasuhiko Kinuta

Yukimi Kawabata

Yuki Tagawa

Kenta Yamakoshi

Yasuhiro Niida

A charging system includes a charging member that rotates while following a rotating image holding body and that charges the image holding body, a removing member that rotates while following the rotating charging member in a state of being arranged at a contact position in contact with the charging member and that removes an adhered deposit adhered to the charging member, a moving member that moves the removing member to a separation position separated from the charging member and the contact position, and at least one processor, in which the processor is configured to cause the removing member to remove the adhered deposit adhered to the charging member only for a removal time by controlling the moving member to move the removing member arranged at the separation position to the contact position at a time determined in advance.

Charging system and image forming system

A charging member includes a support member, a conductive elastic layer disposed on the support member, and a front surface layer disposed on the conductive elastic layer. Irregularities with a cycle of shorter than 0.1 mm and irregularities with a cycle of 0.1 mm or longer are distributed on an entirety of an outer circumferential surface of the charging member, and satisfy the following conditions of (1) and (2): (1) the irregularities with the cycle of shorter than 0.1 mm have an average height of greater than 0 &#x3bc;m and 4 &#x3bc;m or less; and (2) the irregularities with the cycle of 0.1 mm or longer have an average height of from 5 &#x3bc;m to 30 &#x3bc;m. A half-value width of a maximum frequency value of height distribution on the outer circumferential surface is from 1 &#x3bc;m to 3 &#x3bc;m.

Charging member, process cartridge, and image forming apparatus

A charging member includes a support member, a conductive elastic layer disposed on the support member, and a front surface layer disposed on the conductive elastic layer. Irregularities with a cycle of shorter than 0.1 mm and irregularities with a cycle of 0.1 mm or longer are distributed on an entirety of an outer circumferential surface of the charging member, and satisfy the following conditions of (1) and (2): (1) the irregularities with the cycle of shorter than 0.1 mm have an average height of from 8 &#x3bc;m to 11 &#x3bc;m; and (2) the irregularities with the cycle of 0.1 mm or longer have an average height of from 2 &#x3bc;m to 5 &#x3bc;m. A half-value width of the maximum frequency value of height distribution on the outer circumferential surface is from 1 &#x3bc;m to 3 &#x3bc;m.

Charging member, process cartridge, and image forming apparatus for reducing production of micro-chromatic line and white spot

A charging member includes a support member, a conductive elastic layer disposed on the support member, and a front surface layer disposed on the conductive elastic layer. Irregularities with a cycle of shorter than 0.1 mm and irregularities with a cycle of 0.1 mm or longer are distributed on an entirety of an outer circumferential surface of the charging member, and satisfy the following conditions of (1) and (2): (1) The irregularities with the cycle of shorter than 0.1 mm have an average height of 5 &#x3bc;m to 8 &#x3bc;m; and (2) The irregularities with the cycle of 0.1 mm or longer have an average height of 6 &#x3bc;m to 30 &#x3bc;m. A half-value width of a maximum frequency value of a height distribution on the outer circumferential surface is 1 &#x3bc;m to 3 &#x3bc;m.

Charging member, process cartridge, and image forming apparatus for reducing production of micro-chromatic line

A charging member includes a conductive base material and a conductive outermost layer provided on the conductive base material, wherein the conductive outermost layer has a ten-point average surface roughness Rz of 2 &#x3bc;m to 20 &#x3bc;m and contains a resin and particles in which particles having a particle diameter of 5.0 &#x3bc;m or more and a circularity of 0.8 or less are 30% by number or less with respect to the total number of particles having a particle diameter of 5.0 &#x3bc;m or more and particles having a particle diameter of less than 5.0 &#x3bc;m and a circularity of 0.8 or less are from 20% by number to 80% by number with respect to the total number of particles having a particle diameter of less than 5.0 &#x3bc;m.

Growing community of inventors

Kanagawa, Japan

Yoshiyuki Hayashi